MYC0409-NA

UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Product Description MYC0409-NA is an Ultra-thin High Efficiency integrated power solution which combines a 72W DC-DC converter with components. This total power solution can be used in a system without loop compensation and with just three external components in the minimum case. This fully integrated module provides up to 96.5% efficiency despite its small and thin 11.5 x 9.5 x 2.0mm LGA package. Murata’s easy-to-use module pinout design allows simple power layout and provides maximizing efficiency by minimizing routing parasitic resistance. Efficiency TA =25degC This module is fixed divide-by-4 conversion ratio from input voltage to output voltage. Input voltage range of 20V to 60V supports 48V bus systems. ■ ■ ■ ■ ■ Wide input voltage 20V to 60V (DIV4) Suitable for 48V bus systems Efficiency up to 96.5% Up to 95.0% Efficiency with 48VIN/6A Up to 6A Ultra-thin/small 11.5 x 9.5 x 2.0mm LGA package. (T=2.1mm(max.)) Features ■ ■ ■ ■ ■ Open drain power-good output Over-current and over-temperature protections Compensation loop-less charge pump Synchronizes to an external clock Stackable up to 4 modules VIN VIN VIN Output Current IOUT [A] Figure 1. Efficiency Curve Simplified Application Typical Applications ■ ■ ■ ■ ■ ■ Data center/server Networking equipment Base station Optical equipment Test equipment LED signage Figure 2. Simplified Circuit Diagram http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 1 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Table of Contents Product Description ............................................................. 1 Features ............................................................................. 1 Typical Applications ............................................................. 1 Efficiency ........................................................................... 1 Simplified Application .......................................................... 1 Performance Specifications Summary and Ordering Information 3 Top Marking Specification ............................................................. 3 Absolute Maximum Ratings .......................................... 4 Recommended Operating Conditions .......................... 4 Package Thermal Characteristics ................................. 4 Application Information....................................................... 17 Charge Pump Architecture Basics .............................................. 17 Application Performance ..................................................... 19 Application Schematic ........................................................ 19 Application Circuit Part List ................................................. 20 Application Board Example ................................................. 20 Component Selection ......................................................... 21 Input Capacitor ............................................................................ 21 Output Capacitor ......................................................................... 21 Input Fuse ................................................................................... 21 Application Schematic with Secondary.................................. 21 Parallel Operation .............................................................. 22 Pin Description .................................................................... 7 Current and Thermal Balance ..................................................... 22 Pin Connections for Parallel Operation ....................................... 22 Charge Pump Architecture and Important Notice ....................... 24 Hard Short Circuit Condition ....................................................... 24 Soft-start and Capacitors Charge Balancing ............................... 24 Reverse Direction Current Flow and Operation .......................... 25 Input Voltage Transient ............................................................... 25 Functional Block Diagram ..................................................... 8 Packaging Information ........................................................ 26 Electrical Characteristics .............................................. 5 Electrical Characteristics Table ................................................. 5 Pin Configuration................................................................. 7 Application Circuit ............................................................... 8 Package Drawing ........................................................................ 26 Recommended Board Land Pattern ........................................... 27 Typical Performance Characteristics ...................................... 9 Tape and Reel Specification................................................. 28 Thermal Deratings (Reference Data) ..................................... 11 Soldering Guidelines .......................................................... 30 Detailed Description ........................................................... 12 Revision History ........................................................... 31 Start-up – EN, VIN Relationship. .................................................. 12 Enable (EN) ................................................................................. 13 Input Under-voltage Lockout (UVLO) .......................................... 13 Pre-charge Operation.................................................................. 13 Soft-start Operation ..................................................................... 13 PGOOD Operation ...................................................................... 13 External/Internal Clock Modes and SYNCSEL Pin ..................... 15 Protections ................................................................... 15 VIN Under-voltage and Thermal Shutdown Faults ....................... 16 IOUT Overcurrent Protection ......................................................... 16 VOUT Under-voltage Protection .................................................... 16 Soft-start Timeout ........................................................................ 16 PGOOD Low Detection ............................................................... 17 Notices ............................................................................. 32 Scope ............................................................................................ 32 Limitation of Applications ................................................................... 32 Fail-safe function .............................................................................. 33 Product Specification .................................................................. 33 Contact Form .................................................................................. 33 Disclaimers ....................................................................... 34 Patent Statement ............................................................................. 34 Copyright and Trademark .................................................... 34 http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 2 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Performance Specifications Summary and Ordering Information Table 1. Performance Specifications Summary and Ordering Information OUTPUT INPUT VIN (typ.) [V] RANGE [V] IIN full load [A] Efficiency [%] EN Package [mm] Making MSL PART NUMBER VOUT [V] IOUT (max.) [A] MYC0409-NA VIN/DIV4 6.0 48 20-60 1.5 95 Yes (Positive) 11.5 x 9.5 x 2.0 LGA C409NA 3 MYC0409-NA-D VIN/DIV4 6.0 48 20-60 1.5 95 Yes (Positive) 11.5 x 9.5 x 2.0 LGA C409NA 3 Quantity 400 units /Tape &Reel 100 units /Tape &Reel Table 2. Part Numbering 0409 C MY Murata Products Series Name Internal Code - A N Product Grade Code N: High Reliability - D Packaging Code Blank : Standard Quantity D: Small Quantity Control type and Communication Interface Code Top Marking Specification CODES DESCRIPTION Pin 1 marking C409NA Product code Internal manufacturing code C409NA Figure 3. Top Marking Specification http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 3 of 34 SHIPPING METHOD UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Absolute Maximum Ratings (1) Table 3. Absolute Maximum Ratings VIN EN SYNC, SYNCSEL, PGOOD PARAMETER MIN -0.3 -0.3 -0.3 UNITS V V V - MAX 61 VIN+0.3 5.5 VIN/4 +0.1 8 125 260 2 1000 MIN 20 -40 -40 0 MAX 60 105 120 6 UNITS V degC degC A VOUT -0.3 Output Current (IOUT) Storage Temperature (TSTG) Soldering / Reflow Temperature(2) Maximum Number of Reflows Allowed(2) ESD Tolerance, HBM(3) 0 -40 - V A degC degC V Notes: (1) The application of any stress beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device, and exposure at any of these ratings for extended periods may reduce the reliability of the device. The above “Absolute Maximum Ratings” are stress ratings only; the notation of these conditions does not imply functional operation of the device at these or any other conditions that fall outside of the range identified by the operational sections of this specification. (2) Recommended reflow profile is written in “Soldering Guidelines”. (3) Human body model, per the JEDEC standard JS-001-2012. Recommended Operating Conditions (1) Table 4. Recommended Operating Conditions Input Voltage (VIN) Ambient Temperature (TA) (2) Junction Temperature (TJ) (2) Output Current (IOUT) PARAMETER Notes: (1) Device should not be operated outside the operating conditions. The reliability is tested at the maximum voltage of the recommended operating condition. Above of recommended operation may reduce reliability of the device. (2) See the temperature derating curves in the thermal deratings. However, do not condensate. Package Thermal Characteristics (1,2) PARAMETER Θjct Θjcb Table 5. Package Thermal Characteristics Junction-case-top at Heat Junction Junction-case-bottom at Heat Junction TYPICAL 15.9 4.7 UNITS degC/W degC/W Notes: (1) Package thermal characteristics and performance are measured and reported in a manner consistent with the JEDEC standards JESD51-8 and JESD51-12. (2) Junction-to-Ambient Thermal Resistance (ƟJA) is a function not only of the IC, but it is also extremely sensitive to the environment which includes, but is not limited to, board thickness, planes, copper weight / routes, and air flow. Attention to the board layout is necessary to realize expected thermal performance http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 4 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Electrical Characteristics (1) Electrical Characteristics Table VIN = 48V, IOUT = 6A, TA = 25degC, unless otherwise noted PARAMETER INPUT SUPPLY Input Voltage VIN Start-up Slew Rate(2) VIN Under Voltage Lockout Threshold, VIN Rising VIN Under Voltage Lockout Hysteresis VIN Switching Supply Current VIN Shutdown Supply Current ENABLE INPUT (EN PIN) Enable Threshold High(2) Enable Threshold Low(2) Enable Input Rising Duration(2) Enable Pin Input Current POWER GOOD (PGOOD PIN) PGOOD Output Pulldown Low Level(2) PGOOD Input High Voltage(2) PGOOD Input Low Voltage(2) PGOOD Hysteresis PGOOD VOUT Threshold PGOOD Released VOUT Threshold SYNCSEL PIN Threshold High(2) Threshold Low(2) OUTPUT Efficiency Peak Efficiency Full Load Switching Frequency Soft Start Input Current Limit(3) Soft Start Timeout Duration(3) Output Current (Continuous)(3) Output Current (Start-up)(3) Table 6. Electrical Characteristics Table SYMBOL CONDITIONS VIN VIN_SR MIN TYPICAL MAX UNITS 20 0.2 48 - 60 - V V/ms VIN_UVH IOUT=0A - 18.1 - V VIN_UVL IOUT=0A - 0.9 - V IIN_SW IIN_SD VIN=48V, No load VIN=48V, EN=0V - 11 0.15 - mA uA 2.6 - - 0.6 1 V V ms - 42 - uA - - 0.25 V 0.9 - 0.4 0.95* VIN/4 0.8* VIN/4 0.7 - V V V - V - V 1.1 - - 0.4 V V - 96.5 95.0 270 134 100 95.5%* VIN/4 0.086 6 20 % % kHz mA ms A mA - V 44 - 400 uF 44*n - 400 uF VTH_ENH VTH_ENL tR_EN IEN VPG_LOW 0V to VTH_ENH EN=VIN=48V, TA=125degC, No Load IPG=20mA VPGH VPGL VPGHYS VTH_PGH VOUT rising, No fault - VTH_PGL VOUT falling after PGOOD=H - VTH_SYNH VTH_SYNL EFF_PK EFF_FULL fSW IIN_SS tTO_SS IOUT IOUT_START VIN=48V, IOUT=2.4A VIN=48V, IOUT=6A Output Voltage VOUT VIN=48V, Full load condition, DC Equivalent Output Resistance(4) Total External Output Capacitance(2) Total External Output Capacitance with Parallel Operation(2) ROUT VIN=60V, IOUT=6A Inside recommended OP range COUT COUT_P n=Parallel devices numbers - ohm http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 5 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Electrical Characteristics Table VIN = 48V, IOUT = 6A, TA = 25degC, unless otherwise noted PARAMETER PROTECTION Thermal Shutdown Threshold(2) Thermal Shutdown Hysteresis Over Current Protection ENVIRONMETAL Moisture Sensitivity Level Table 6. Electrical Characteristics Table SYMBOL TTH_OTP THYS_OTP ITH_OCP CONDITIONS Temperature rising MSL MIN TYPICAL MAX UNITS 125 - 150 16 10 - degC degC A 3 Notes: (1) Min/Max specifications are 100% production tested at TA=25degC, unless otherwise noted. Limits over the operating range are guaranteed by design. (2) Guaranteed by design. (3) Load currents may cause start-up failure due to Soft-start timeout fault. Devices supplied power from this device should be started up after the PGOOD signal becomes high state. (4) ROUT = (VIN/4-VOUT)/IOUT http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 6 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Pin Configuration Figure 4. Module Terminals (Top View) Pin Description Table 7. Pin Description PIN No. NAME DESCRIPTION A1, A3, A7, B1, B2, B5-7, C1-7, D2-7, E3-8, F5-8, G5-8 GND Ground for power and thermal. Please connect ground plane in low impedance. E1, F1, G1 VIN Power input terminal A8, B8, C8, D8 VOUT G3 EN A5 SYNC A6 SYNCSEL A4 PGOOD Power good terminal. Connect a 10kohm resistor from PGOOD to an external bus voltage between 3.3V and 5.5V. A2, D1, E2, F2, G2, G4 DNC Do not connect pins electrically. Those pins must connect to the board with solder but must be left floating electrically each other. Power output terminal Part enable terminal. Do not leave this terminal open. HIGH=ON / LOW=OFF CLOCK IN / OUT terminal. Direction is configurable by SYNCSEL terminal potential. SYNC terminal control. LOW=CLKOUT, HI-Z=CLKIN. http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 7 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Functional Block Diagram Figure 5. Functional Block Diagram Application Circuit Figure 6. Application Circuit http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 8 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Typical Performance Characteristics In this document, all characteristics are measured with the application board which is shown in Figure 26. The schematic and part list of the board are shown in Figure 25 and Table 11. The board is under TA =25degC with no airflow unless otherwise noted. VIN VIN VIN VIN VIN VIN VIN VIN Output Current IOUT [A] Output Current IOUT [A] Figure 7. Efficiency (Linear, Log scale) Startup waveform with VIN =48V, IOUT =0A, TA =25degC, COUT =44uF VIN, 50V/div EN, 10V/div PGOOD, 5V/div VOUT, 10V/div 4ms/div Figure 8. Start-up Waveform Shutdown waveform with VIN =48V, IOUT =6A, TA= 25degC, COUT =44uF VIN, 50V/div EN, 10V/div PGOOD, 5V/div VOUT, 10V/div 200us/div Figure 9. Shutdown Waveform http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 9 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module VOUT ripple waveform with VIN=48V, IOUT=6A, TA =25degC, COUT=44uF VOUT(AC), 50mV/div 1us/div Figure 10. VOUT Ripple Waveform VIN ripple waveform with VIN=48V, IOUT=6A, TA =25degC, CIN2=9.4uF VIN(AC), 100mV/div 1us/div Figure 11. VIN Ripple Waveform Load transient response waveform with VIN=48V, IOUT=0 to 6A, 1A/us, TA =25degC, COUT=44uF VOUT(AC), 500mV/div VOUT(AC), 500mV/div IOUT, 5A/div IOUT, 5A/div 20us/div 20us/div Figure 12. Load Transient Response Waveform http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 10 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Thermal Deratings (Reference Data) Output Current IOUT [A] Thermal Deratings with VIN=48V Ambient Temperature TA [degC] Figure 13. Thermal Deratings (VIN=48V) Output Current IOUT [A] Thermal Deratings with VIN=54V Ambient Temperature TA [degC] Figure 14. Thermal Deratings (VIN=54V) The thermal deratings are evaluated in following conditions. ・The product is mounted on 114.5 x 101.5 x 1.6mm (Layer1, 4: 2oz copper / Layer2, 3: 1oz copper) FR-4 board. Surface temperature of the product: 116degC (max.) http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 11 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Detailed Description The MYC0409-NA is a divide-by-4, two-phase charge pump-based DC-DC converter, so any change in input voltage will be reflected at the output. The MYC0409-NA can be powered from input voltage ranges from 20V to 60V. The output voltage range supported is 5V to 15V with load currents of 6A The SYNCSEL pin can be tied to ground or by left floating, If tied to ground then the device will use an internal clock and this clock signal will appear at the SYNC pin. If left floating, then the SYNC pin will act as an input. Please refer to Table 7 for details. The pin configurations are sampled when the MYC0409-NA starts up and before the charge pump stage is enabled. The configuration pins are not designed to be driven dynamically, so they should be in a fixed state at power up. Start-up – EN, VIN Relationship. The MYC0409-NA has an enable input pin, EN, which is designed to be compatible with typical low-voltage digital I/O levels so that it can be easily driven by an external controller. EN can be also connected to the VIN pin. If external power sequencing or control is not required, EN should be tied to VIN and not left open. If the EN pin is held low until VIN has reached its nominal voltage, the MYC0409-NA follows the initialization sequence shown in Figure 15. Figure 15. Initialization Sequence http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 12 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Enable (EN) The MYC0409-NA is enabled by an active-high EN input pin when the voltage higher than 2.6V is applied. The MYC0409-NA is disabled when the voltage at the EN pin falls below 0.6V. The EN pin can be shorted to the VIN pin to automatically enable the part with a minimal number of external components and PCB routing. When multiple MYC0409-NAs are used in parallel, all their EN pins must be connected to a single enable signal. Scope plots showing the enable and disable behavior are shown in Figure 8 and Figure 9. Input Under-voltage Lockout (UVLO) The MYC0409-NA provides continuous monitoring of the VIN input using a fixed under-voltage lockout threshold. The MYC0409-NA is enabled when the VIN voltage rises above 18.1V typical. When the VIN falls below the fixed under-voltage lockout threshold minus additional 0.9V hysteresis, charge pump switching is disabled. Pre-charge Operation Before enabling the soft-start switching sequence, the MYC0409-NA pre-charges the internal flying capacitors to make a balanced state based upon the divider ratio. This is done so that when the soft-start phase commences, the voltage across the capacitors is at their nominal voltage and known state. Note that the adaptive pre-charge system takes pre-charging time depending on the external voltages present on the circuit. The output voltage may not rise monotonically during the pre-charge period. Soft-start Operation After the pre-charge phase is completed, the device enters soft-start mode and charges the output capacitor at 134mA typical value input current. It exits the state when the VOUT voltage has reached the PGOOD VOUT threshold. The PGOOD pin can go high at the same time. Figure 8 shows a typical power-up sequence. As the device goes through a soft-start sequence, a load current should not be applied to the device until the PGOOD pin is high. If a load is connected before this, the device will not start up. If the output current is loaded, VOUT may not reach the target during the soft-start phase. As a result, the system detects soft-start timeout, latches off the device and then requires the EN pin to be toggled to restart. The soft-start timeout is 100ms typical value. A similar situation can also happen if there is too much COUT capacitance. PGOOD Operation The power good pin is a bi-directional open drain pin. When the output voltage is above the PGOOD VOUT threshold, the PGOOD pull-down FET is turned off to allow the external pull-up resistor to pull up the node. The PGOOD pin must be pulled up externally. If another device or digital I/O is also pulling down on this pin, the MYC0409-NA remains in soft-start mode, and high-power mode is not enabled. When MYC0409-NA allows PGOOD to be pulled high, the charge pump is ready to support the full load current. When multiple MYC0409-NAs are used in parallel, all their PGOOD pins must be connected. In this case, all MYC0409-NAs must complete soft-start before PGOOD is asserted and full power operation is allowed. In the event of a fault at one or more parallel MYC0409-NAs, the PGOOD pin will be pulled low by the faulted MYC0409NAs. Note that the PGOOD pin of a disabled device will NOT be pulled low if the device is not enabled. In effect, if EN=0, the PGOOD pin should be ignored. Table 7. Pin Description shows the PGOOD pin table and Figure 16. PGOOD Sequence Diagram shows in figure.16. VOUT pre-biased condition would enable PGOOD function to pull low if the part enabled. VIN VIN ≦ VTH_UVH VIN ＞ VTH_UVH VIN ＞ VTH_UVH EN X LOW HIGH Table 8. PGOOD Pin Table STATE X Shutdown After Start-up and Normal (fault free) operation Others PGOOD X(1) HIGH(2)(3)(4) HIGH(5) LOW Notes: (1) If VIN≦ UVLO, the PGOOD should be ignored. (2) It is pulled HIGH when the module is in stopped state shut-down. (3) EN signal changes from HIGH to LOW (Shut-down period), it indicates Low for 60ms(Typical). After that, the PGOOD is pulled HIGH. (4) In the case of PGOOD being pulled up by divided VOUT, it indicates Low. (5) It indicates LOW during soft-start operation. http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 13 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Figure 16. PGOOD Sequence Diagram Figure 17 shows an example of PGOOD Application Circuit. If there is not 3.3-5V rail, PGOOD can be pulled up by divided VOUT. Using 100kohm and 47kohm with 1% tolerance to the VOUT dividing resistors can support wide VIN range. Note that PGOOD voltage varies with VOUT voltage in this case. Figure 17. PGOOD Application Circuit http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 14 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module External/Internal Clock Modes and SYNCSEL Pin In most applications, the MYC0409-NA operates using an internal oscillator. Table 9 shows the SYNC pin table. DETECTOR GND OPEN (HI-Z) Output Table 9. SYNC Pin Table SYNC EFFECT OF FAULT The internal clock is sent to the SYNC pin as an output. An external clock can be applied to the sync input. If no clock in, the internal clock is used. Input The charge pump is operated at a half frequency of the SYNC pin input/output clock. Because MYC0409-NA internal components are optimized for efficiency with the internal oscillator frequency, injecting an external clock is not recommended for single-unit applications. If configured to use an external clock (SYNCSEL=open circuit), and the external clock stops or is not present for some reason, an internal watchdog detects the missing clock and causes MYC0409-NA to swap back to use of the internal clock source. When the expected external clock source resumes, the MYC0409-NA reverts to using the external clock. When the SYNCSEL pin is tied to GND, the internal clock is present on the SYNC pin. Since the SYNC pin is high impedance and can be affected by external noise, in the event that an external clock out function is not being used in the application, it is recommended that the SYNCSEL pin is left to float, and the SYNC pin is tied to GND by a resistor. For parallel operation, SYNCSEL pin on one of the paralleled modules should be GND to provide the clock for the others, the other paralleled modules should be left floating to receive the shared clock to get all synced up. Protections (1) MYC0409-NA is a high power device. To protect both systems, and the internal circuitry of MYC0409-NA, there are multiple fault detection circuits built in. Table 10 shows a summary of the various protection modes. Table 10. Protections LATCHED OFF OR AUTOMATIC RETRY RESPONSE TIME UNIT Over temperature Automatic retry us VIN under-voltage Automatic retry us IOUT overcurrent Automatic retry us IOUT short circuit Latched off us Soft-start timeout Latched off us PGOOD held low Automatic retry us VOUT under-voltage Automatic retry us DETECTOR EFFECT OF FAULT PGOOD goes low and the power stage switches off until the temperature reduces under the hysteresis threshold. At this point, the device automatically restarts. The device needs to restart into no load to automatically restart. PGOOD goes low and the charge pump is disabled until VIN returns above the UVLO threshold and enabled. The device needs to restart into no load to automatically restart. If the load current exceeds the over-current limit, PGOOD goes low and the charge pump is disabled for a certain period to cool down. If the device is still over current after the cooldown period, after the cooldown period it automatically restarts. If the load current exceeds the short-current limit, the device is immediately latched off and shuts down. EN must be toggled to restart the device. If VOUT does not reach the target voltage of VIN divided by 4 within the soft start timeout period, the device shuts down and EN must be toggled to restart it. If the charge pump is operating at full power and if PGOOD is pulled down externally, the device enters soft-start mode. If the PGOOD pin is held low for less than the soft-start period, the charge pump returns to full power operation. If the PGOOD pin is held low for longer than the soft-start duration, the charge pump completes a soft-start cycle before returning to normal operation and should not be loaded during this period. If the output of the device is under the VOUT threshold, the PGOOD pin is pulled low. The device will switch off and enter a cooldown period. After the cool down period the charge pump will restart into soft start mode. Note: (1) Protections are designed to prevent any damages or issues on the module as a best effort service. This will not guarantee safety or no damages in your system. Murata highly recommends having the primary protection like adding Fuse and regarding those protections as supportive functions in your systems. http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 15 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module VIN Under-voltage and Thermal Shutdown Faults The VIN under-voltage and thermal shutdown faults are grouped purely because the effect they have on the charge pump is similar. If either of these faults is present when the charge pump is first enabled, the charge pump cannot start up. The charge pump holds in this state until both faults are clear, regardless of how long this takes. VIN under-voltage and thermal shutdown faults are considered “persistent” as they will hold the charge pump disabled until the fault clears. In the case of VIN under-voltage, it is unlikely that the charge pump will be able to support the full load current when VIN (and therefore VOUT too) is too low. Because it is not desirable for MYC0409-NA or for the load to operate in this condition, the charge pump will hold off waiting for VIN to improve/recover. An over-temperature fault is likely to occur only when MYC0409-NA is dissipating too much internal power, which normally results from some other fault conditions such an overload condition. In the event of over-temperature, MYC0409-NA may start to drift out of guaranteed performance specifications, which would be undesirable for the system. To recover from over-temperature, the power dissipation in MYC0409-NA must be reduced to reduce the internal temperature. When VIN under-voltage or over-temperature fault is detected during normal operation, MYC0409-NA enters a controlled shutdown sequence with an unlimited cool-down period. When the faults clear, the MYC0409-NA enters a soft-start sequence. IOUT Overcurrent Protection Over-current protection operates by sensing the current being drawn from VIN. The over-current protection trips when MYC0409-NA is operated outside the recommended operating conditions. Typically, the device trips when the output current exceeds 10A typical. The over-current protection has two separate protection methods. - If the current exceeds the over current protection threshold of 10A typical, then when triggered, the device will enter a cool-down period and after this automatically restart. During this time the PGOOD pin is pulled low. - If the current exceeds 15A typical, the device immediately shuts down and latches off. During this time, the PGOOD pin is pulled low. To restart the device, the EN pin must be toggled. MYC0409-NA reacts to over-current fault by entering a controlled shutdown sequence. The device is then latched off until EN is toggled. After enable is toggled and the pre-charge is complete, MYC0409-NA enters a normal softstart sequence and attempts to restart. Note that some persistent fault conditions may prevent the charge pump from restarting successfully, for example, in the event of a hard fault to GND at VOUT. VOUT Under-voltage Protection The VOUT under-voltage fault detector measures value at VOUT with the expected value derived from VIN/4. The VOUT under-voltage fault is designed to be slow and represents an averaged value. The VOUT under-voltage flag trips when VOUT goes below 80% of the target (VOUT_UVP). The VOUT under-voltage detector trips when VOUT goes below 80% of the target voltage. It is important that external components are chosen so that expected transient loads do not trip the VOUT_UVP threshold. In effect, the application should ensure that the load dependency causes a less than 20% deviation from the nominal VOUT. Soft-start Timeout When MYC0409-NA first tries to supply power to the load, the power is limited by soft-start circuit. Using soft-start has no significant side effects if the start-up is “normal”. If MYC0409-NA starts up into a fault, the soft-start helps to manage the power being supplied to the fault as well as limiting the power dissipation in MYC0409-NA. In normal, fault-free operation, the soft-start timeout should be invisible if the soft-start current is able to ramp VOUT to the target voltage inside 100ms. In the event of a fault, the soft-start timeout occurs when VOUT does not ramp to the target voltage in the expected time. In this case, the softstart timeout causes power to the load to be stopped and MYC0409-NA to enter a controlled shutdown sequence. The device then latches off, and EN must be toggled to restart it. http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 16 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module PGOOD Low Detection In a stand-alone MYC0409-NA implementation, the PGOOD signal will likely have only one driver. When MYC0409-NA is ready for full power, PGOOD goes high and stays high for as long as the single MYC0409-NA remains enabled and fault-free. In parallel operation, the PGOOD signal must be connected in a wired OR configuration with the other devices. When all devices are ready for full power, the PGOOD signal goes high. In the event of a fault, the PGOOD signal is pulled low and switches off all the parallel devices. EN must then be toggled to restart the devices. Application Information Charge Pump based DCDC converter is the high efficiency bus converter which doesn’t have the regulation capability. Because of its architecture, there are some differences from conventional inductive buck converters. And some of the behaviors may cause critical issues if you use inappropriate way although it is as same way as the conventional buck converters. Charge Pump Architecture Basics Charge Pump is a capacitive voltage converter which is configured by plural of switches and capacitors like shown in Figure 18. The drawing shows divide by four configurations. Figure 18. Divide by Four Charge Pump Configuration Charge pump usually has two main switch states. Our UltraCPTM series also have the two main switch states shown in Figure 19-A and Figure 19-B. Figure 19-A. Divide by Four Charge Pump Phase One Configuration http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 17 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Figure 19-B. Divide by Four Charge Pump Phase Two Configuration During phase one, flying capacitor of C1 will be connected between VIN and VOUT. And the C2 and C3 will be connected between VOUT and GND. In phase two, C1 and C2 will be connected between VOUT and GND. And the C3 will be connected between VOUT and GND. Figure 20 shows these two states of capacitor connection and charged voltage relationship. Once the charge pump finishing soft-start, each capacitor will have VIN/4, VIN*2/4 and VIN*3/4 voltage. This voltage will be maintained to keep switching between the phase one and the phase two. To improve the charge pump efficiency, increase of the flying capacitor capacitance works well. Also, minimize of switch resistance and parasitic resistance works, too. Our UltraCPTM series has optimized CFLY, power switch resistance and routing parasitic. Therefore, users wouldn’t need to care about such a detail. Figure 20. Divide by Four Charge Pump Capacitor Connection MYC0409-NA is based around a high efficiency, charge pump based DC-DC converter with an unregulated output voltage. Because of the architecture, there are some important characteristics which are different from conventional inductive buck converters. To avoid damage to the system, or the device, it is important to understand some of the key architecture differences compared to conventional buck converters. For the details, please refer the section of Charge Pump Architecture and Important Notice. http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 18 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Application Performance Typical performance with the application board of Figure 26 are shown in Figure 21 to Figure 24. TA =25degC VIN VIN VIN VIN VIN VIN VIN VIN Output Current IOUT [A] Output Current IOUT [A] VIN VIN Figure 22. Power Dissipation VIN VIN (VOUT-VIN/4)/(VIN/4) [%] Output Voltage VOUT [V] Figure 21. Efficiency VIN VIN VIN VIN Output Current IOUT [A] Figure 23. VOUT Load Regulation Output Current IOUT [A] Figure 24. VOUT Drop Ratio Application Schematic An example of MYC0409-NA standalone schematic is shown in Figure 25. Please refer recommended circuit part list shown in Table 1. Figure 25. Application Schematic http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 19 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Application Circuit Part List An Example of the standard components are shown in Table 11. Components must be chosen referring the system requirement like Voltage, Temperature, etc. REFERENCE VALUE CIN2 4.7uF COUT 22uF x 2pcs RPG 10kohm CIN1 Table 11. Application Circuit Part List DESCRIPTION 100uF Electrolysis Capacitor (Optional)(1) Input Capacitor Ceramic capacitor, 4.7uF, 100V, ±10%, X7S Output Capacitor Ceramic capacitor, 22uF, 25V, ±20%, X7S Pull-up Resistor for Power Good Indication Chip resistor, 1/10W, ±5% - PART NUMBER GRM31CC72A475KE11 (Murata) GRM31CC71E226ME15 (Murata) RK73B1ETTP103J (KOA) (1) If there is a non-negligible parasitic impedance between the power supply and the converter, such as during evaluation, the optional input capacitor "CIN1" may be required to reduce the impedance. The recommended optional capacitor is an example. Please consider the optimum value for the case. This capacitor is usually an aluminum electrolytic type. It isn't necessary to place the capacitor near the input terminal of the converter. Application Board Example All reference data on this datasheet are taken with this board. Figure 26. Application Board Example http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 20 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Component Selection Input Capacitor The input capacitor is connected between VIN and GND. It is used to reduce the ripple on VIN. The input capacitor should be placed as close to the module as possible to reduce any parasitic inductance effects. The voltage rating of the capacitor needs to be as high as the absolute maximum voltage rating for the system and the effect of the capacitor voltage coefficient should be considered to determine the effective capacitance value at the applied VIN. Since the charge pump isn’t a regulator, ripple voltage on VIN will affect the output voltage. Output Capacitor The output capacitor is used to reduce the ripple on VOUT. The higher the capacitor values, the lower the ripple at VOUT becomes. Increasing the output capacitor value will increase the soft-start duration and might push the module to time out during soft-start. Please take account into this to consider additional COUT value of your system. Following system’s input capacitance would be the COUT of MYC0409-NA. Input Fuse Certain applications and/or safety agencies may require fuses at the inputs of power conversion components. Fuses should be also used when there is possibility of sustained input voltage reversal which is not current- limited. For greatest safety, we recommend a fast blow fuse installed in the ungrounded input supply line. The installer must observe all relevant safety standards and regulations. For safety agency approvals, install the converter in compliance with the end-user safety standard. Application Schematic with Secondary An example of MYC0409-NA with secondary schematic is shown in Figure 27. Figure 27. Application Schematic with Secondary http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 21 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Parallel Operation MYC0409-NA can be run in parallel in a multi-device configuration to increase output power as shown in Figure 28. In parallel operation mode, care and attention must be paid to some important things. Current and Thermal Balance As with standard inductive DC-DC converters, a paralleled charge pump also must be taken care of the current/thermal balance. The MYC0409-NA provides divided voltage of the input voltage to its output. The output voltage relates the input voltage and the output voltage isn’t regulated. Therefore, the charge pump provides natural droop based on the equivalent output resistance (ROUT). When the load applied to the paralleled charge pump modules, each output voltage of the modules starts to droop. The voltage drop from the ideal output voltage (VIN/DIV) is decided by (ROUT + parasitic resistance)*IOUT. And the load current of each module is decided by the relationship of the (ROUT + parasitic resistance). For the charge pumps to load-share effectively, attention should be paid to the layout to reduce the parasitic resistance variation of the input/output power tracks. The MYC0409-NA is capable of up to 6A unless limited by other factors. Therefore, when in parallel operation imbalance in the load sharing caused by parasitic impedances can result in one module current limiting before another. This effect can restrict the total amount of power available to the system. The power loss generated by the module results in heat rise in the module to maintain load sharing so that the modules should share the same thermal structure. Figure 28. Multi-module Current Sharing Pin Connections for Parallel Operation Pin connection limitation is slightly different from the single module operation. Please follow below instruction and refer the Figure 29. PGOOD output must be pulled up together and combined in a wire OR configuration. The load following the charge pump should not be switched on until all PGOOD are high and the load should immediately be switched off if any of the PGOOD outputs switch low after start up. The SYNCSEL pin on one of the paralleled modules should be GND to provide the clock for the others, the other paralleled modules should be left floating to receive the shared clock to get all synced up. http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 22 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Figure 29. Multi-module Application Circuit http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 23 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Charge Pump Architecture and Important Notice MYC0409-NA uses multiple, low impedance, switches to take advantage of the higher energy density available in capacitors (compared to inductors) to transfer power. The keys to optimize charge pump efficiency include (i) reducing charge redistribution losses and (ii) minimizing thermal losses. MYC0409-NA reduce the charge redistribution loss with patented ‘almost loss-less’ architectures. The thermal losses are minimized by using lower voltage rated (internal) power FETs which take advantage of the reduced voltage as the input supply gets divided. These two key features make MYC0409-NA very efficient. In exchange for the high efficiency, some of the differences to conventional buck converters need to be recognized to avoid permanent damage to the device. Figure 30(A) shows an inductive regulator called a buck converter. There is an inductor between switching node to VOUT, so it would be prevented transient change of current when a hard short happened. For Figure 30(B), it would be high di/dt condition with a hard short because MYC0409-NA does not have a large inductor but has low impedance of power FETs. In general, inductance would be reduced the current slope of inductor and impedance of power FETs would be reduced peak current. Therefore, “Hard Short Circuit Condition” is written as bellow. VIN VIN VOUT VOUT (A) Inductive Regulator (B) Charge Pump Figure 30. Inductive Regulator and Charge Pump Hard Short Circuit Condition MYC0409-NA is a capacitive DC-DC converter and has low inductance at the output to optimize its efficiency. As a result of the low output inductance, a hard short at this product output can result in a di/dt condition which can be much higher than a conventional, inductive, buck converter would allow. MYC0409-NA has a built-in output current protection. However, hard output short circuits with very low impedance may cause permanent damage to the device and should be avoided. If such faults needed to be considered, it may be necessary to add primary protection (external to the device) to ensure adequate protection of the device and the condition might be varied over environment and use cases. Soft-start and Capacitors Charge Balancing The charge pump is an open-loop capacitive DC-DC converter. The output voltage is generated using “flying” capacitors (“CFLY") which move charge from one voltage level to another. The voltage across the flying capacitors in normal operation will be limited to VOUT. The voltage balancing between and across the flying capacitors is important to maintain stability. Murata’s charge pump has several internal states which specifically enhance stability including “pre-charge” and “soft-start”. During pre-charge, each of the CFLY capacitors is charged to the appropriate DC voltage bias level (depending on VOUT) to ensure a balanced state at start-up. During soft-start, the charge pump starts switching with a controlled current (134mA typical input current) to ramp VOUT to the target voltage (depending on VIN). The controlled start-up avoids inrush current and EMI issues during turn on and ensures VOUT reaches the PGOOD VOUT threshold before full power operation is enabled. As a further safety measure the soft-start time is also monitored to ensure the system does not contain any unexpected leakage paths (like VOUT or CFLY shorts). As a result of the limited soft-start current, the system will not support starting up into a full power load. The PGOOD pin will indicate the system is ready for full load (when soft-start has finished, and VOUT has reached the PGOOD VOUT threshold). The soft-start timeout protection also means that the maximum output capacitance should be limited for reliable startup. Increasing COUT beyond the recommended level may mean that the charge pump fails to start-up. http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 24 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Current limited soft-start consumes larger power than standard operation. Therefore, temperature rising during the soft-start condition needs to be cared. Reverse Direction Current Flow and Operation MYC0409-NA is designed to divide the input voltage by Four. Parasitic diodes, which are parts of the internal power switches, are based on power flow from VIN to VOUT. To avoid forward bias of the internal diodes, and potentially damaging high current levels, reverse power flow (from VOUT to VIN) must be avoided. Inductive buck converters are protected from very high di/dt conditions by the filtering effect of the power inductor. MYC0409-NA has much lower inductance (to optimize efficiency) and has very low impedance internal switches (and reverse diodes). Reverse power flow may be triggered when VOUT is greater than VIN/4. MYC0409-NA is designed to safely start up into a pre-biased output if the condition VOUT VIN/4. One condition which could cause reverse power flow is a rapid decrease in the VIN voltage level while MYC0409NA remains enabled. It may also result in an unexpected shut-down. To avoid them, VIN should not be reduced rapidly while MYC0409-NA is enabled. Similarly reducing VIN (while EN=0) and then re-enabling again with lower VIN could result in reverse power flow if the VOUT capacitor still holds the previous VOUT level. Input Voltage Transient MYC0409-NA over-current protection operates by sensing the current being drawn from VIN. A rapid increase in VIN generates voltage difference between the input and the CFLY, resulting in excessive input inrush current. It may result in an unexpected shut-down. To avoid it, VIN should not be increased rapidly while MYC0409-NA is enabled. http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 25 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Packaging Information This section provides packaging data including the moisture sensitivity level, package drawing, package marking and tape-and-reel information. Package Drawing 9.5 11.5 TOP VIEW BOTTOM VIEW Unit: mm Tolerances ±0.15 mm 2.1max. SIDE VIEW Figure 31. Package Overview http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 26 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Figure 32. Package Foot Print and The Dimension (Top View) Recommended Board Land Pattern Figure 33. Recommended Board Land Pattern and The Dimension (Top View) http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 27 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Tape and Reel Specification Tape Dimension Figure 34. Tape Dimension http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 28 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Reel Dimension 25.5±1.0 φ100±1 φ330±2 A 2.0±0.5 Indication φ21.0±0.8 φ13.0±0.5 Portion A Unit:mm Figure 35. Reel Dimension Module Orientation in Tape Figure 36. Module Orientation in Tape http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 29 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Taping Specification Figure 37. Taping Specification 1. The adhesive strength of the protective tape is within 0.3-1.0N. 2. Each reel contains 400 or 100pcs. 3. Each reel set in moisture-proof packaging because of MSL 3. 4. No vacant pocket in “Module on tape” section. 5. The reel is labeled with Murata part number and quantity. 6. The color of reel is not specified. Soldering Guidelines Murata recommends the specifications below when installing the converter. These specifications vary depending on solder types. Exceeding these specifications may cause damage to the product. Your production environment may differ therefore please thoroughly review these guidelines with your process engineers. This product can be reflowed twice. Table 12. Reflow Solder Operations for Surface-mount Products For Sn/Ag/Cu based solders: Preheat Temperature Time Over Liquidus. Maximum Peak Temperature Cooling Rate For Sn/Pb based solders Preheat Temperature Time Over Liquidus. Maximum Peak Temperature Cooling Rate Less than 1degC per second 45 to 75 seconds 260degC Less than 3degC per second Less than 1degC per second 60 to 75 seconds 235degC Less than 3degC per second http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 30 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Figure 38. Reflow Profile for Sn/Ag/Cu Solder Revision History REV DATE A02 APR-2022 A03 JUL-2022 A04 OCT-2022 A05 OCT-2023 DESCRIPTION Updated Notes (3). Updated Pre-charge Operation. Updated External/Internal Clock Modes and SYNCSEL Pin. Updated Parallel Operation. Updated Electrical Characteristics Table. Updated Enable (EN). Add Performance Specifications Summary Add Part Number Structure Add Soldering Guidelines Add Scope Add Fail-safe function Updated Limitation of Applications Update Top Marking Specification Add Output Current (Start-up) in Electrical Characteristics Table PAGE NUMBER P6 P13 P15 P22 P5 P13 P3 P3 P31 P33 P34 P33 P3 P5 http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 31 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Notices Scope This specification (or This datasheet) is applied to MYC0409-NA. - Specific applications: Consumer Electronics, Industrial Equipment CAUTION Limitation of Applications The products listed in the datasheet (hereinafter the product is called the “Product”) are designed and manufactured for applications specified in the specification or the datasheet. (hereinafter called the “Specific Application”). We shall not warrant anything in connection with Products including fitness, performance, adequateness, safety, or quality, in the case of applications listed in from (1) to (11) written at the end of this precautions, which may generally require high performance, function, quality, management of production or safety. Therefore, Product shall be applied in compliance with the specific application. We disclaim any loss and damages arising from or in connection with the products including but not limited to the case such loss and damages caused by the unexpected accident, in event that (i) the product is applied for the purpose which is not specified as the specific application for the product, and/or (ii) the product is applied for any following application purposes from (1) to (11) (except that such application purpose is unambiguously specified as specific application for the product in our catalog specification forms, datasheets, or other documents officially issued by us*). (1) Aircraft equipment (2) Aerospace equipment (3) Undersea equipment (4) Power plant control equipment (5) Medical equipment (6) Transportation equipment (such as vehicles, trains, ships) (7) Traffic control equipment (8) Disaster prevention/security equipment (9) Industrial data-processing equipment (10) Combustion/explosion control equipment (11) Equipment with complexity and required reliability equivalent to the applications listed in the above For exploring information of the Products which will be compatible with the particular purpose other than those specified in the datasheet, please contact our sales offices, distribution agents, or trading companies with which you make a deal, or via our web contact form. Contact form: https://www.murata.com/contactform *We may design and manufacture particular Products for applications listed in (1) to (11). Provided that, in such case we shall unambiguously specify such Specific Application in the specification or the datasheet without any exception. Therefore, any other documents and/or performances, whether exist or non-exist, shall not be deemed as the evidence to imply that we accept the applications listed in (1) to (11). http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 32 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Fail-safe function Be sure to add an appropriate fail-safe function to your finished product to prevent secondary damage in the unlikely event of an abnormality function or malfunction in our product. Please connect the input terminal by right polarity. If you mistake the connection, it may break the DCDC converter. In the case of destruction of the DC-DC converter inside, input over-current may flow. Please add a diode and fuse as following to protect them. fuse + diode + + IN OUT + Load - - Please select diode and fuse after confirming the operation. Figure 39. Circuit example with a diode and fuse Note 1. Please make sure that your product has been evaluated in view of your specifications with our product being mounted to your product. 2. You are requested not to use our product deviating from the reference specifications. 3. If you have any concerns about materials other than those listed in the RoHS directive, please contact us. 4. Be sure to provide an appropriate fail-safe function on your product to prevent a second damage that may be caused by the abnormal function or the failure of our product. 5. Please don’t wash this product under any conditions. Product Specification Product Specification in this datasheet are as of Sep. 2023. Specifications and features may change in any manner without notice. Please check with our sales representatives. Contact Form https://www.murata.com/contactform?Product=Power%20Device http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 33 of 34 UltraCP™ MYC0409-NA Document Category: Datasheet Ultra-thin High Efficiency 72W DCDC Converter Module Disclaimers The information described in this data sheet was carefully crafted for accuracy. However this product is based on the assumption that it will be used after thoroughly verifying and confirming the characteristics and system compatibility. Therefore, Murata is not responsible for any damages caused by errors in the description of the datasheet. Murata constantly strives to improve the quality and reliability of our products, but it is inevitable that semiconductor products will fail with a certain probability. Therefore, regardless of whether the use conditions are within the range of this data sheet, Murata is not responsible for any damage caused by the failure of this product., (for example, secondary damage, compensation for accidents, punitive damage, loss of opportunity, and etc.) Also, regardless of whether Murata can foresee the events caused by the failure of our product, Murata has no obligations or responsibilities. The buyer of this product and developer of systems incorporating this product must analyze, evaluate, and make judgements at their own risk in designing applications using this product. The buyer and the developer are responsible for verifying the safety of this product and the applications, and complying with all applicable laws, regulations, and other requirements. Furthermore, the buyer and developer are responsible for predicting hazards and taking adequate safeguards against potential events at your own risk in order to prevent personal accidents, fire accidents, or other social damage. When using this product, perform thorough evaluation and verification of the safety design designed at your own risk for this product and the application. Murata assumes that the buyer and developer have the expertise to verify all necessary issues for proper use of the product as described above and to take corrective action. Therefore, Murata has no liability arising out of the use of the product. The buyer and developer should take all necessary evaluations, verifications, corrective actions and etc., in your own responsibility and judgment. This data sheet does not guarantee or grant any license to the information, including patents, copyrights, and other intellectual property rights, of the Murata or third parties. Regardless of whether the information described in this datasheet is express or implied, Murata does not take any responsibility or liability for any claims, damages, costs, losses, etc. relating to intellectual property rights or other rights from third parties due to the use of these information. Patent Statement Murata products are protected under one or more of the U.S. patents. Copyright and Trademark ©2023 Murata Manufacturing Co., Ltd. All rights reserved. ! This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: https://power.murata.com/en/requirements Murata Manufacturing Co., Ltd makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Spec and cautions are subject to change without notice. http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. All rights reserved. Specifications are subject to change without notice. Document Number: D90DH-00151 / Export Control Code: X0863 MYC0409-NA Rev.A05 (Oct.-2023) Page 34 of 34