TPP362080-T6TR

TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator Features Description • • • • • • The TPP36208x series is a simple, easy-to-use, 2A output, synchronous, step-down, and switch-mode converter with internal power MOSFETs. Wide Supply Voltage: 4.5 V to 36 V Absolute Maximum Voltage: 42 V Internal Power FET: 180 mΩ and 90 mΩ High-Efficiency Synchronous-Mode Operation Fixed Switching Frequency – – – • • • • • • • • • • The TPP36208x series integrates low-RDS(ON) power transistors in the TSOT23-6 package with internal soft-start, compensation, and protection features. The TPP36208x offers a very compact solution to achieve a 2-A continuous output current over a wide input supply range, with excellent load and line regulation. 0.6-V Reference Voltage with 2% Accuracy 500 kHz (TPP362080/2) 1 MHz (TPP362084/5) 2.2 MHz (TPP362081/3) The TPP36208x series has different versions of switching frequencies at 500-kHz, 1-MHz and 2.2-MHz, and also supports light load PSM to save quiescent current and forced-PWM mode to maintain the fixed switching frequency. Low 2-μA Shutdown, 70-μA Quiescent Current Internal Light Load Power-Save Mode for High Efficiency at Light Load (TPP362080/1/4) Forced-PWM Mode for Low-Output Ripple (TPP362082/3/5) The device is available in the 6-pin TSOT23-6 package with the support of a wide operation ambient temperature range from −40 °C to 125 °C. Internal 2-ms Soft-Start Timer Internal Loop Compensation Over-Current Protection with Hiccup Mode Output over Voltage Protection Thermal Shutdown Small Outline Package TSOT23-6 −40°C to 125°C Operation Ambient Temperature Range Applications • • • 12-V, 24-V Distributed Power Supply Industrial Applications General Purpose Typical Application Circuit CBST 1 2 VOUT COUT 3 VIN GND BOOT TPP36208 SW EN VIN FB 6 5 4 EN VOUT CIN www.3peak.com 1 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator Table of Contents Features................................................................................................................................................................1 Applications......................................................................................................................................................... 1 Description........................................................................................................................................................... 1 Typical Application Circuit..................................................................................................................................1 Revision History...................................................................................................................................................3 Pin Configuration and Functions....................................................................................................................... 4 Specifications.......................................................................................................................................................5 Absolute Maximum Ratings (1) .......................................................................................................................5 ESD, Electrostatic Discharge Protection........................................................................................................ 5 Recommended Operating Conditions............................................................................................................ 6 Thermal Information........................................................................................................................................6 Electrical Characteristics................................................................................................................................ 7 Typical Performance Characteristics.............................................................................................................. 9 Detailed Description.......................................................................................................................................... 13 Overview.......................................................................................................................................................13 Functional Block Diagram.............................................................................................................................13 Feature Description...................................................................................................................................... 14 Application and Implementation...................................................................................................................... 16 Application Information ................................................................................................................................ 16 Typical Application........................................................................................................................................16 Layout................................................................................................................................................................. 19 Layout Guideline...........................................................................................................................................19 Layout Recommendations............................................................................................................................19 Tape and Reel Information................................................................................................................................ 20 Package Outline Dimensions........................................................................................................................... 22 TSOT23-6.....................................................................................................................................................22 Order Information.............................................................................................................................................. 23 IMPORTANT NOTICE AND DISCLAIMER......................................................................................................... 24 www.3peak.com 2 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator Revision History Date Revision 2022-03-15 Rev A.0 Initial release. 2022-07-11 Rev A.1 Minor correction. Updated description of EN pin function to internally weak pulled up. 2022-07-31 Rev A.2 Updated order information, automotive grade devices, electrical table rising/ falling timing and block diagrams. 2022-12-28 Rev A.3 Updated information in Typical Performance Characteristics. 2023-02-17 Rev A.4 Updated electrical characteristics on VIL,max, VIH,min 2023-05-12 Rev A.5 Updated 1-MHz version part number, TPP362084/5, updated EN voltage recommended voltage and current, detailed description and typical applications. www.3peak.com Notes 3 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator Pin Configuration and Functions TPP36208 TSOT23-6 Package Top View GND 1 6 VBST Part Number SW 2 5 EN VIN 3 4 VFB Table 1. Pin Functions: TPP36208x Pin Name I/O 1 GND G Ground pin. Power and controller circuit ground. Use star connection to GND pin with good contact. 2 SW O Switching node pin. Voltage switching between high-side FET and low-side FET. 3 VIN P Supply input pin. Connect decoupling 2 × 10-µF and 1 × 0.1-µF capacitors between VIN and GND pins. 4 VFB I Voltage feedback pin. Connect to output voltage with a feedback resistor divider. 5 EN I Enable input. Active high. Internal weak pull-up. 6 VBST O High-side MOSFET gate supply pin. Connect 0.1-µF between VBST and SW pins. www.3peak.com Description 4 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator Specifications Absolute Maximum Ratings (1) Parameter Min Max Unit VIN Supply Voltage −0.3 42 V SW Switching Node Voltage −0.3 VIN + 0.3 V Switching Node Voltage (50 ns) −3 42 V Switching Node Voltage (20 ns) −5 42 V VBST-SW Bootstrap Voltage −0.3 6 V FB Feedback Voltage −0.3 6 V EN Enable Input −0.3 42 V TJ Maximum Junction Temperature −40 150 °C TA Operating Temperature Range −40 125 °C TSTG Storage Temperature Range −65 150 °C TL Lead Temperature (Soldering 10 sec) 260 °C (1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. (2) The inputs are protected by ESD protection diodes to each power supply. If the input extends more than 300 mV beyond the power supply, the input current should be limited to less than 10 mA. (3) A heat sink may be required to keep the junction temperature below the absolute maximum. This depends on the power supply voltage and how many amplifiers are shorted. Thermal resistance varies with the amount of PC board metal connected to the package. The specified values are for short traces connected to the leads. ESD, Electrostatic Discharge Protection Parameter HBM CDM Human Body Model ESD Charged Device Model ESD Condition Minimum Level Unit ANSI/ESDA/JEDEC JS-001 (1) 2 kV ANSI/ESDA/JEDEC JS-002 (2) 1.5 kV (1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. (2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. www.3peak.com 5 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator Recommended Operating Conditions Parameter Min Typ Max Unit 4.5 36 V VIN Supply Input Voltage Range EN EN Input Voltage Range 0 36 V FB FB Input Voltage Range 0 5.5 V BOOT – SW BOOT Voltage Range 0 5.5 V SW FB Input Voltage Range 0 VIN V TJ Operating Junction Temperature –40 150 °C Thermal Information Package Type θJA θJC Unit TSOT23-6 100 67 °C/W www.3peak.com 6 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator Electrical Characteristics All test condition is at VIN = 12 V, TA = −40°C to +125°C, unless otherwise noted. Parameter Conditions Min Typ Max Unit 36 V Power Supply VIN Supply Voltage Range 4.5 IQ Operating Supply Current Non-switching, EN = 5 V, VFB = 1 V 70 μA IQSD Shut Down Supply Current EN = GND 2 μA VUVLO_rising UVLO Rising Threshold 3.9 4.3 4.5 V VUVLO_falling UVLO Falling Threshold 3.7 3.9 4.1 V VENH EN Input Rising Threshold 1.15 1.28 1.35 V VENL EN Input Falling Threshold 1 1.15 1.2 V VEN = 0.9 V 0.65 1.04 1.5 μA 3.6 4.3 5.2 μA Enable L(1) IEN_L EN current, EN = IEN_H EN current, EN = H VEN = 1.5 V IEN_HYS EN hysteresis current VEN = 1.5 V 3.3 μA Feedback and Power Stage VFB VFB Feedback Voltage Rds(on)_HSD High-side FET On-Resistance ISW = 1 A 180 mΩ Rds(on)_LSD Low-side FET On-Resistance ISW = 1 A 90 mΩ fSW Switching Frequency 588 600 612 mV TPP362080/2 390 500 590 kHz TPP362081/3 1.76 2.2 2.64 MHz TPP362084/5 0.8 1 1.2 MHz tss Soft-Start Time 2 t ss_done Soft start transition time Iskip Pulse-Skip Mode Peak Inductor Current Threshold VIN = 12 V, VOUT = 5 V, L = 15 μH ILimit_HS High-side Current Limit Inductor peak current ILimit_LS Low-side Current Limit Inductor valley current ILimit_LS_neg Negative Low-side Current Limit 14 18 ms 24 300 ms mA Current Limit 2.5 3.2 3.9 A 2.5 A 0.9 A Diagnostics and Protection VFB_UVP_rising FB Hiccup Protection Rising Ratio 33 % VFB_UVP_falling FB Hiccup Protection Falling Ratio 40 % VFB_OVP_rising FB Over-Voltage Protection Rising Ratio 108 % VFB_OVP_falling FB Over-Voltage Protection Falling Ratio 107 % www.3peak.com 7 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator Parameter Conditions Min Typ Max Unit tHIC_wait Hiccup Protection Wait Time 128 Cycles tHIC_restart Hiccup Protection Restart Time 60 ms Thermal Shutdown TSD Thermal Shut Down Temperature 160 °C TSD_hys Thermal Hysteresis 10 °C 1. Guranteed by design www.3peak.com 8 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator Typical Performance Characteristics 120 602 VIN = 4.5 V VIN = 12 V VIN = 36 V 601 Feedback Voltage (mV) Quiescent Current (μA) 100 80 60 40 20 0 -40 600 599 598 597 -20 0 20 40 60 Temperature (°C) 80 100 120 596 -40 140 Figure 1. Quiescent Current vs. Supply Voltage -20 0 20 40 60 Temperature (°C) 80 100 120 140 Figure 2. Reference Voltage vs. Temperature 260 1.26 240 220 1.22 200 On-resistance (mΩ) 1.24 Threshold (V) 1.2 1.18 1.16 Lowside Highside 180 160 140 120 1.14 100 1.12 Rising, VIN = 4.5 V Falling, VIN = 4.5 V Rising, VIN = 12 V Falling, VIN = 12 V Rising, VIN = 36 V Falling, VIN = 36 V 1.1 1.08 -40 -20 0 20 40 60 Temperature (°C) 80 100 80 60 -40 -20 0 20 40 60 Temperature (°C) 80 100 120 140 120 Figure 4. On-Resistance vs. Temperature Figure 3. EN Threshold vs. Junction Temperature VIN = 12 V, IOUT = 0.5 A 550 3.3 VIN = 4.5 V VIN = 12 V VIN = 36 V 540 3.25 530 Current Limit (A) Frequency (kHz) 520 510 500 490 480 470 3.2 3.15 3.1 3.05 460 450 -40 -15 10 35 60 Temperature (°C) 85 110 3 -40 125 10 35 60 Temperature (°C) 85 110 125 Figure 6. Current Limit vs. Temperature Figure 5. Switching Frequency vs. Temperature www.3peak.com -15 9 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator 5 4.5 VIN = 4.5 V VIN = 12 V VIN = 36 V 4.4 4 4.3 3.5 4.2 UVLO Threshold (V) Shutdown Current (µA) 4.5 3 2.5 2 .5 4.1 4 3.9 3.8 1 3.7 0.5 3.6 0 -40 -20 0 20 40 60 Temperature (°C) 80 100 3.5 -40 120 Figure 7. Shutdown Current vs. Junction Temperature Rising, VIN = 4.5 V Falling, VIN = 4.5 V Rising, VIN = 12 V Falling, VIN = 12 V Rising, VIN = 36 V Falling, VIN = 36 V -20 0 20 40 60 Temperature (C) 80 100 120 Figure 8. UVLO Threshold vs. Temperature 90 100 97.5 85 95 92.5 80 90 Efficiency (%) Efficiency (%) 87.5 85 82.5 80 75 70 77.5 75 65 72.5 70 65 0.01 60 V(IN) = 12 V V(IN) = 24 V V(IN) = 36 V 67.5 0.02 0.03 0.05 0.07 0.1 0.2 Current (A) 0.3 0.4 0.5 0.7 1 55 0.001 2 VIN = 12 V VIN = 24 V VIN = 36 V 0.002 0.005 0.01 0.02 0.03 0.05 0.1 Output Current (A) 0.2 0.3 0.5 0.7 1 2 Figure 10. Efficiency vs. Output Current VOUT= 5 V, L = 2.2 µH, 500kHz, TPP362080 with Pulse Skip Mode VOUT= 5 V, L = 2.2 µH, 2.2MHz, TPP362081 with Pulse Skip Mode 100 100 95 95 90 90 85 85 80 80 75 75 70 70 Efficiency (%) Efficiency (%) Figure 9. Efficiency vs. Output Current 65 60 55 50 65 60 55 50 45 45 40 40 35 35 VIN = 12 V VIN = 24 V VIN = 36 V 30 25 20 0.01 0.02 0.03 0.05 0.07 0.1 0.2 Output Current (A) 0.3 0.4 0.5 0.7 1 VIN = 12 V VIN = 24 V VIN = 36 V 30 25 20 0.01 2 0.02 0.03 0.05 0.07 0.1 0.2 Output Current (A) 0.3 0.4 0.5 0.7 1 2 Figure 11. Efficiency vs. Output Current Figure 12. Efficiency vs. Output Current VOUT= 5 V, L = 2.2 µH, 500kHz, TPP362082 with ForcedPWM Mode VOUT= 5 V, L = 2.2 µH, 2.2MHz, TPP362083 with ForcedPWM Mode www.3peak.com 10 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator 1 0.8 I(OUT) = 0.5 A I(OUT) = 1 A 0.2 0.6 Output Voltage Deviation (%) Output Voltage Deviation (%) 0.24 V(IN) = 12 V V(IN) = 24 V V(IN) = 36 V 0.4 0.2 0 -0.2 0.16 0.12 0.08 0.04 0 -0.04 -0.4 -0.08 -0.6 0 0.4 0.8 Current (A) 1.2 1.6 6 2 12 18 24 Input Voltage (V) Figure 13. Load Regulation Figure 14. Line Regulation VOUT = 5 V VOUT= 5 V 30 Figure 16. Pulse Skip Mode Output Voltage Ripple Figure 15. Pulse Skip Mode Output Voltage Ripple CH2: VOUT Ripple, CH3: SW CH2: SW, CH3: VOUT Ripple VIN = 12 V, VOUT = 5 V, IL = 0 A VIN = 12 V, VOUT = 5 V, IL = 10 mA Figure 17. Pulse Skip Mode Output Voltage Ripple Figure 18. Output Voltage Ripple CH2: VOUT , CH3: SW VIN = 12 V, VOUT = 5 V, IL = 0.1 A CH2: VOUT , CH3: SW VIN = 12 V, VOUT = 5 V, IL = 1 A www.3peak.com 36 11 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator Figure 19. Load Transient Figure 20. Load Transient CH2: VOUT , CH4: Load Current VIN = 12 V, VOUT = 5 V, IL = 0.1 A to 1 A CH2: VOUT , CH4: Load Current VIN = 12 V, VOUT = 5 V, IL = 0.5 A to 1.5 A Figure 21. Start Up by VIN Figure 22. Power-Down by VIN CH1: VIN , CH4: EN, CH8: VOUT CH1: VIN , CH4: EN, CH8: VOUT Figure 23. Start Up by EN Figure 24. Power-Down by EN CH1: VIN , CH4: EN, CH8: VOUT CH1: VIN , CH4: EN, CH8: VOUT www.3peak.com 12 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator Detailed Description Overview The TPP36208x is a 2-A synchronous step-down converter. The current mode control topology provides a fast transient response and supports low ESR output capacitors, such as specialty polymer capacitors and multi-layer ceramic capacitors, without extra compensation circuitry. Device Frequency Low Output Current Mode TPP362080-T6TR 500 kHz Pulse-Skip Mode TPP362081-T6TR 2.2 MHz Pulse-Skip Mode TPP362082-T6TR 500 kHz Forced-PWM Mode TPP362083-T6TR 2.2 MHz Forced-PWM Mode TPP362084-T6TR 1 MHz Pulse-Skip Mode TPP362085-T6TR 1 MHz Forced-PWM Mode Functional Block Diagram VIN UV Bootstrap Reference FB Current Sense Soft Start VBST PowerFET Logic Core EN PreDrv Bias SW PreDrv GND Figure 25. Functional Block Diagram www.3peak.com 13 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator Feature Description Current Mode Control The TPP36208x uses the current mode control topology. The current mode topology supports fixed frequency operation thus optimizing ripple performance. With integrated low Rds(on), the device can achieve high efficiency in a small physical footprint. Switching Frequency TPP36208x supports both 500-kHz(TPP362080/TPP362082), 1-MHz (TPP362085/6) and 2.2-MHz switching frequency(TPP362081/TPP362083). 500-kHz has better efficiency due to less switching loss, 2.2-MHz supports high frequency inductor with small form factor and 1-MHz is a good balance in between. 3PEAK recommends to evaluate thermal performance in 1-MHz and 2.2-MHz scenarios especially at high temperature conditions. Pulse-Skip Mode To improve light-load efficiency, the TPP362080/1/4 will automatically enter improved light-load mode when the inductor ripple valley current reaches zero. The controller keeps the on-time of the high-side switch unchanged. With a light load, the decay of voltage takes a longer time and lowers the switching frequency accordingly. Forced-PWM Mode The TPP362082/3/5 has forced-PWM mode to support low-noise applications. When the inductor ripple valley current reaches zero, the device will automatically enter the forced-PWM mode with a fixed switching frequency. In this mode, the negative current limit of low-side FET is enabled. Enable Input The device EN has two current sources to pull EN up high. IENand IHYS. When EN is low, the IENis enabled as IEN_L. When EN rises above the threshold and turns hysteresis current IEN_SYSon, the total current is IEN_H VIN IEN IHYS R1 EN R2 Figure 26. EN Block Diagram The EN threshold can be set via below equations (1) R1 = VENL VIN_START − VENH − VENH VIN_STOP − VENL VENH ⋅ IENH − VENL ⋅ IENL www.3peak.com 14 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator R2 = IENL + VENH VIN_START − VENH R1 Soft-Start with Pre-Biased Capability Once EN becomes high, the device ramps up its internal reference voltage with a fixed 2-ms rise time. When the output capacitor is pre-charged, the soft-start ramp will only enable output switching after the internal reference ramps above the FB voltage. Over Current Protection The device has a cycle-by-cycle current limit. During the OFF state, once overcurrent is detected at ripple current valley by measuring the low-side FET current, the device keeps the low-side FET OFF until the current falls below the over-current protection (OCP) threshold. The device has negative current and can block reverse current when reverse inductor current is higher than threshold. Output Undervoltage Hiccup Protection When the device output voltage falls below the hiccup voltage threshold, the device turns into the hiccup mode by turning off the device and restarts after the hiccup timer (typically 60 ms) expires. To support large output capacitance as large as 1 mF, the device has an extended soft start transition timer. Upon power up, the device gets into soft-start and prevents the device into output under voltage hiccup protection mode until soft start transition time tss_doneis over. Undervoltage Lockout (UVLO) Protection Once the input voltage falls below the UVLO threshold, the device is shut off. Once the device recovers above the UVLO threshold, the device returns to normal operation. Over-Temperature Shutdown Once the junction temperature rises above the internal over-temperature shutdown threshold, the device shuts off and recovers when the temperature falls below the threshold with hysteresis. www.3peak.com 15 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator Application and Implementation Note Information in the following application sections is not part of the 3PEAK’s component specification and 3PEAK does not warrant its accuracy or completeness. 3PEAK’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. Application Information As an easy-to-use step-down voltage regulator, also known as a buck regulator, the TPP36208x usually coverts a higher input voltage to the desired output voltage set by the VFB resistor divider. The maximum output current is 2 A. The below section depicts a simplified design flow of circuitry for the TPP36208x. Typical Application In most 12-V systems, lower voltage rail such as 5 V/3.3 V is a typical need for microcontrollers, I/Os, and other low voltage components. The below application lists the typical schematic for a 5-V buck regulator. Figure 27. Typical Application Circuit The following steps provide how to design a buck solution of TPP362080 based on the above 1.To establish the desired output voltage (VOUT), employ equation [1] and proceed with the selection of the resistor divider (RHS/RLS). RHS = RLS ⋅ VOUT −1 0.6 (2) 2.For the selection of the output inductor (LO), determine the minimum value (LO_MIN) by applying equations below IRIPPLE = VOUT ⋅ VIN_MAX − VOUT VIN_MAX ⋅ LO ⋅ fSW (3) LO_MIN = VOUT ⋅ VIN_MAX − VOUT VIN_MAX ⋅ fSW ⋅ IOUT ⋅ r (4) 2 2 ILO_RMS = IOUT + ILO_PEAK = IOUT + www.3peak.com IRIPPLE 12 (5) IRIPPLE 2 (6) 16 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator Where VIN_MAX represents the maximum input voltage, r denotes the ratio between the inductor ripple current (IRIPPLE) and the maximum output current (IOUT), ILO_RMS signifies the RMS inductor current, and ILO_PEAK represents the peak inductor current. Typically, a value of 0.3 is chosen when utilizing low ESR output capacitors. For the TPP362080 with an fSW of 500kHz, we recommend selecting an inductor with IOUT= 2A and r=0.3, regardless of the operating conditions. For example, when VIN_MAX= 36V and VOUT= 5V, the minimum value of the output inductor I(LO_MIN)is calculated to be approximately 14.3uH. In this case, a standard inductor with a rating of 15μH, a saturation current of 4.1A, and a rated current of 3.5A would be suitable. 3.Choose the Output Capacitor (COUT) For the selection of the output capacitor (COUT), determine the minimum value (CO_MIN) by employing equations below. CO_MIN ≥ 2ΔIOUT fSW ⋅ ΔVOUT CO_MIN ≥ LO ⋅ (7) 2 2 2 2 IOi − IOf (8) Vf − Vi ΔIOUT = IOi − IOf IRIPPLE CO_MIN ≥ 8fSW ⋅ VO_RIPPLE RESR ≤ (9) (10) VO_RIPPLE IRIPPLE ICO_RMS ≥ (11) VOUT × VIN_MAX − VOUT (12) 12 ⋅ VIN_MAX ⋅ LO ⋅ fSW Where ΔIOUT represents the change in output current, IOi signifies the heavy load output current, and IOf represents the light load output current during load transient. ΔVOUT denotes the allowable change in output voltage, while Vi represents the initial output voltage and Vf represents the maximum allowable output voltage during the transient from light load to heavy load. VO_RIPPLE represents the maximum allowable value of output voltage ripple under maximum output current conditions. RESR indicates the equivalent series resistance of the output capacitor, and ICO_RMS represents the RMS current of the output capacitor. As an example, let's consider VOUT= 5V, ΔIOUT= 1.5A - 0.5A = 1A, VO_RIPPLE< 50mV, and ΔVOUT< 250mV. In this case, a minimum output capacitance of approximately 26μF with an ESR of less than 35mΩ is calculated. Therefore, with capacitance derating in consideration, 2 * 22μF ceramic capacitors rated at 25V with an ESR of 5mΩ will be used. 4.Choosing the Bootstrap Capacitor (CBST) To ensure proper operation of the TPP362080 device, a 0.1μF ceramic capacitor should be connected between the BOOT and SW pins. It is recommended to use a ceramic capacitor with X5R or superior grade dielectric and a voltage rating of 10V or higher. 5.Choosing the Input Capacitor (CIN) To ensure proper operation of the TPP362080 device, it is necessary to connect a 10μF capacitor between the VIN and GND pins with a short PCB trace. It is recommended to use a ceramic capacitor with X5R or superior grade dielectric and a voltage rating of 50V or higher. Additionally, it is common to include a 0.1μF, 50V decoupling ceramic capacitor as an input capacitor. Component Selection EVM: Fsw= 500 kHz, MODE = Pulse-Skip, IOUT= 2 A, tSS= 2 ms, VOUT= 5 V Designator Value U1 TPP362080 www.3peak.com Quantity Part No. Buck TSOT23-6 Converter, Package 3PEAK 17 / 24 Manufacturer TPP362080T6TR Description 1 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator EVM: Fsw= 500 kHz, MODE = Pulse-Skip, IOUT= 2 A, tSS= 2 ms, VOUT= 5 V Designator Value Quantity Part No. Package Manufacturer Description 36V, 1A, 500kHz, PFM C1 NC 0 C2 NC 0 C3 100 nF 1 C4 10 μF 1 R1 510 K 1 C5 NC 0 R2 100 K C6 GGD21BR71H10 0805 4KA02 GCM32EC71H10 muRata Capacitor, 100 nF, 50VDC, X7R, ±15% Capacitor, 10 μF, 1210 muRata ARG03FTC5103 0603 Viking 1 ARG03FTC1003 0603 Viking Resistor, 100 K, ±1%, 0.1 W 100 nF 1 GRM188R71C10 0603 4KA01D muRata Capacitor, 100 nF, 16VDC, X7R, ±15% C7 NC 0 R3 0R 1 L1 15 μH 1 7447714150 C8 22 μF 1 GRM32ER71E22 1210 6ME15L muRata Capacitor, 22 μF, 25VDC, X7R, ±15% C9 22 μF 1 GRM32ER71E22 1210 6ME15L muRata Capacitor, 22 μF, 25VDC, X7R, ±15% C10 100 nF 1 GGD21BR71H10 0805 4KA02 muRata Capacitor, 100 nF, 50VDC, X7R, ±15% C11 NC 0 R4 49.9 R 1 ARG03FTC49R9 0603 Viking Resistor, 49.9 Ω, ±1%, 0.1 W R5 22 K 1 ARG03FTC2202 0603 Viking Resistor, 22 K, ±1%, 0.1 W R6 3K 1 ARG03FTC3001 0603 Viking Resistor, 3 K, ±1%, 0.1 W www.3peak.com 6MA03L ERJ-3GEY0R00 V 18 / 24 0603 Panasonic 10mm × 5mm Wurth Elektronik × 10mm eiSos 50VDC, X7S, ±22% Resistor, 510 K, ±1%, 0.1 W Resistor, 0 Ω, 5%, 0.1 W Inductor, 15 μH, 3.5 A, 36ohm, ±20% EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator Layout Layout Guideline • • • • Both input capacitors and output capacitors must be placed to the device pins as close as possible. It is recommended to bypass the input pin to ground with a 0.1-μF bypass capacitor. It is recommended to use wide and thick copper to minimize I×R drop and heat dissipation. Exposed pad must be connected to the PCB ground plane directly, the copper area must be as large as possible. Layout Recommendations Top Layer www.3peak.com Bottom Layer 19 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator Tape and Reel Information Package D1 (mm) W1 (mm) A0 (mm) B0 (mm) K0 (mm) P0 (mm) W0 (mm) Pin1 Quadrant TPP362080T6TR TSOT23-6 180.0 12.3 3.2 3.2 1.1 4.0 8.0 Q3 TPP362081T6TR TSOT23-6 180.0 12.3 3.2 3.2 1.1 4.0 8.0 Q3 TPP362082T6TR TSOT23-6 180.0 12.3 3.2 3.2 1.1 4.0 8.0 Q3 Order Number www.3peak.com 20 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator Order Number Package D1 W1 A0 B0 K0 P0 W0 Pin1 (mm) (mm) (mm) (mm) (mm) (mm) (mm) Quadrant TPP362083T6TR TSOT23-6 180.0 12.3 3.2 3.2 1.1 4.0 8.0 Q3 TPP362084T6TR TSOT23-6 180.0 12.3 3.2 3.2 1.1 4.0 8.0 Q3 TPP362085T6TR TSOT23-6 180.0 12.3 3.2 3.2 1.1 4.0 8.0 Q3 www.3peak.com 21 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator Package Outline Dimensions TSOT23-6 www.3peak.com 22 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator Order Information Operating Temperature Range Package Marking Information MSL Transport Media, Quantity Eco Plan TPP362080-T6TR −40 to 125°C TSOT23-6 320 MSL3 Tape and Reel, 3000 Green TPP362081-T6TR −40 to 125°C TSOT23-6 321 MSL3 Tape and Reel, 3000 Green TPP362082-T6TR −40 to 125°C TSOT23-6 322 MSL3 Tape and Reel, 3000 Green TPP362083-T6TR −40 to 125°C TSOT23-6 323 MSL3 Tape and Reel, 3000 Green TPP362084-T6TR −40 to 125°C TSOT23-6 324 MSL3 Tape and Reel, 3000 Green TPP362085-T6TR −40 to 125°C TSOT23-6 325 MSL3 Tape and Reel, 3000 Green Order Number Green: 3PEAK defines "Green" to mean RoHS compatible and free of halogen substances. www.3peak.com 23 / 24 EA20220903A5 TPP36208x 36-V Input, 2-A Synchronous Step-Down Voltage Regulator IMPORTANT NOTICE AND DISCLAIMER Copyright© 3PEAK 2012-2023. All rights reserved. Trademarks. Any of the 思瑞浦 or 3PEAK trade names, trademarks, graphic marks, and domain names contained in this document /material are the property of 3PEAK. You may NOT reproduce, modify, publish, transmit or distribute any Trademark without the prior written consent of 3PEAK. Performance Information. Performance tests or performance range contained in this document/material are either results of design simulation or actual tests conducted under designated testing environment. Any variation in testing environment or simulation environment, including but not limited to testing method, testing process or testing temperature, may affect actual performance of the product. 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