MPQ8632DGLE-6-Z

MPQ8632D-6, MPQ8632D-12 High Efficiency, 6A/12A, 18V Synchronous Step-down Converter END OF LIFE, REFER TO MPQ8632-6 OR MPQ8632-12 DESCRIPTION FEATURES The MPQ8632D-6/MPQ8632D-12 is a fully integrated high frequency synchronous rectified step-down switch mode converter. It offers a very compact solution to achieve 6A/12A output current over a wide input supply range with excellent load and line regulation. The MPQ8632D-6/MPQ8632D-12 operates at high efficiency over a wide output current load range. • The MPQ8632D-6/MPQ8632D-12 uses Constant-On-Time (COT) control mode to provide fast transient response and ease loop stabilization. • • • • • • • An external resistor programs the operating frequency from 200kHz to 1MHz and the frequency keeps nearly constant as input supply varies with the feedforward compensation. • • The default under voltage lockout threshold is internally set at 4.1V, but a resistor network on the enable pin can increase this threshold. An open drain power good signal indicates that the output is within nominal voltage range. • The MPQ8632D-6/MPQ8632D-12 employs a programmable soft start and shut-down scheme. With the soft shut-down feature, it discharges the output voltage smoothly when the enable signal is deserted. It has fully integrated protection features that include over-current protection, over-voltage protection and thermal shutdown. • 2.5V to 18V Operating Input Range with External 5V Bias 4.5V to 18V Operating Input Range with Internal Bias 6A/12A Output Current Low RDS(ON) Internal Power MOSFETs Proprietary Switching Loss Reduction Technique Adaptive COT for Ultrafast Transient Response 0.5% Reference Voltage Over 0C to 70C Junction Temperature Range Programmable Soft Start and Shut-down Time Pre-Bias Start up Programmable Switching Frequency from 200kHz to 1MHz Non-latch OCP, OVP and Thermal Shutdown Output Adjustable from 0.611V to 13V APPLICATIONS • • • • • • Telecom and Networking Systems Base Stations Servers Personal Video Recorders Flat Panel Television and Monitors Distributed Power Systems All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Products, Quality Assurance page. “MPS” and “The Future of Analog IC Technology” are registered trademarks of Monolithic Power Systems, Inc. The MPQ8632D-6/MPQ8632D-12 requires a minimal number of readily available standard external components and is available in a 3mm×4mm package. MPQ8632D-6_MPQ8632D-12 Rev. 1.01 www.MonolithicPower.com 4/7/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 1 MPQ8632D-6, MPQ8632D-12 ― 6A/12A, 18V, SYNCHRONOUS STEP-DOWN CONVERTER END OF LIFE, REFER TO MPQ8632-6 OR MPQ8632-12 TYPICAL APPLICATION MPQ8632D-6_MPQ8632D-12 Rev. 1.01 www.MonolithicPower.com 4/7/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 2 MPQ8632D-6, MPQ8632D-12 ― 6A/12A, 18V, SYNCHRONOUS STEP-DOWN CONVERTER END OF LIFE, REFER TO MPQ8632-6 OR MPQ8632-12 ORDERING INFORMATION Part Number Package MPQ8632DGLE-6* QFN(3X4mm) MPQ8632DGLE-12 QFN(3X4mm) Top Marking MP8632D 6 MP8632D 12 * For Tape & Reel, add suffix –Z (e.g. MPQ8632DGLE–6–Z) PACKAGE REFERENCE TOP VIEW VIN PGND PGND 1 9 14 SW 15 SW 16 10 13 11 12 VIN PGND PGND VIN PGND PGND EN EN 2 FREQ FREQ 3 FB FB 4 SS SS 5 AGND AGND 6 PG PG 7 VCC VCC 8 BST BST TOP VIEW 8 7 6 5 4 3 2 1 9 SW 15 SW 16 10 11 14 VIN 13 PGND 12 PGND Part Number* Package Part Number* Package MPQ8632DGLE-6 Junction Temperature QFN (3x4mm) Top Marking MPQ8632DGLE-12 Junction Temperature QFN (3x4mm) Top Marking –40C to +125C MP8632D 6 –40C to +125C MP8632D 12 * For Tape & Reel, add suffix –Z (eg. MPQ8632DGLE-6–Z) * For Tape & Reel, add suffix –Z (eg. MPQ8632DGLE-12–Z) ABSOLUTE MAXIMUM RATINGS (1) Supply Voltage VIN .......................................21V VSW ....................................... -0.3V to VIN + 0.3V VSW (30ns) ..................................-3V to VIN + 3V VBST......................................................VSW + 6V Enable Current IEN(2)................................ 2.5mA All Other Pins ................................ –0.3V to +6V Continuous Power Dissipation (TA=+25)(3) QFN3X4……………………….…..…………2.7W Junction Temperature .............................. 150C Lead Temperature ................................... 260C Storage Temperature ............... -65C to +150C Recommended Operating Conditions (4) Thermal Resistance (5) θJA θJC QFN (3x4mm) ......................... 46 ....... 9 .... C/W Notes: 1) Exceeding these ratings may damage the device. 2) Refer to the section “Configuring the EN Control”. 3) The maximum allowable power dissipation is a function of the maximum junction temperature T J(MAX), the junction-toambient thermal resistance θJA, and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by PD(MAX)=(T J(MAX)TA)/θJA. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 4) The device is not guaranteed to function outside of its operating conditions. 5) Measured on JESD51-7, 4-layer PCB. Supply Voltage VIN .......................... 4.5V to 18V Output Voltage VOUT .....................0.611V to 13V Enable Current IEN...................................... 1mA Operating Junction Temp. (TJ).-40°C to +125°C MPQ8632D-6_MPQ8632D-12 Rev. 1.01 www.MonolithicPower.com 4/7/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 3 MPQ8632D-6, MPQ8632D-12 ― 6A/12A, 18V, SYNCHRONOUS STEP-DOWN CONVERTER END OF LIFE, REFER TO MPQ8632-6 OR MPQ8632-12 ELECTRICAL CHARACTERISTICS VIN = 12V, TJ = -40C to +125C, unless otherwise noted. Parameters Symbol Condition Min Typ Max Units 700 0 860 1 1000 μA μA Supply Current Supply Current (Shutdown) Supply Current (Quiescent) MOSFET High-side Switch On Resistance Low-side Switch On Resistance Switch Leakage IIN IIN HSRDS-ON LSRDS-ON SW LKG VEN = 0V VEN = 2V, VFB = 1V MPQ8632DGLE-6 TJ =25C 28 mΩ MPQ8632DGLE-12 TJ =25C 19.6 mΩ MPQ8632DGLE-6, TJ =25C 15.8 MPQ8632DGLE-12,TJ=25C 5.2 VEN = 0V, VSW = 0V or 12V 0 10 mΩ μA Current Limit Low-side Valley Current Limit(6) Low-side Negative Current Limit(6) MPQ8632DGLE-6 6.5 7.5 8.5 MPQ8632DGLE-12 12 15 18 -4 -2.5 -1 ILIMIT_VALLEY ILIMIT_NEGATIVE A A Timer One-Shot On Time TON RFREQ=453kΩ, VOUT=1.2V Minimum On Time(6) TON_MIN (6) Minimum Off Time TOFF_MIN Under-voltage Protection UVP Threshold(6) VUVP Reference And Soft Start/Shut-down Reference Voltage Feedback Current Soft Start Charging Current Soft Shut-down Discharging Current IFB ISS TJ = 0°C to +70°C TJ = 0°C to +125°C TJ = -40°C to +125°C VFB = 611mV VSS=0V ISD VSS=0V VREF 250 ns 20 200 30 360 40 420 ns ns 47% 50% 53% VFB 608 605 602 16 611 611 611 50 20 614 617 620 100 25 mV mV mV nA μA 6 10 15 μA MPQ8632D-6_MPQ8632D-12 Rev. 1.01 www.MonolithicPower.com 4/7/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 4 MPQ8632D-6, MPQ8632D-12 ― 6A/12A, 18V, SYNCHRONOUS STEP-DOWN CONVERTER END OF LIFE, REFER TO MPQ8632-6 OR MPQ8632-12 ELECTRICAL CHARACTERISTICS (continued) VIN = 12V, TJ = -40C to +125C, unless otherwise noted. Parameters Symbol Condition Min Typ Max Units 1.1 1.3 250 0 0 1.5 V mV Enable And UVLO Enable Input Low Voltage Enable Hysteresis Enable Input Current VILEN VEN-HYS IEN VEN = 2V VEN = 0V μA VCC Regulator VCC Under Voltage Lockout Threshold Rising VCC Under Voltage Lockout Threshold Hysteresis VCC Regulator VCC Load Regulation Power Good VCCVth 3.8 V VCCHYS 500 mV VCC 4.8 0.5 V % Icc=5mA PGVth-Hi-Rise PGVth-Hi-Fall PGVth-Lo-Rise Power Good Low Threshold PGVth-Lo-Fall Power Good Lower to High Delay PGTd Power Good Sink Current IOL Capability Power Good Leakage Current IPG_LEAK Power Good High Threshold Thermal Protection (6) Thermal Shutdown Thermal Shutdown Hysteresis TSD FB from low to high FB from high to low FB from low to high FB from high to low 86% 116% 90% 109% 120% 85% 2.5 VOL=600mV VPG = 3.3V 94% 124% VFB VFB VFB VFB ms 12 mA 10 nA 25 °C °C 150 Note: 6) Guaranteed by design. MPQ8632D-6_MPQ8632D-12 Rev. 1.01 www.MonolithicPower.com 4/7/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 5 MPQ8632D-6, MPQ8632D-12 ― 6A/12A, 18V, SYNCHRONOUS STEP-DOWN CONVERTER END OF LIFE, REFER TO MPQ8632-6 OR MPQ8632-12 PIN FUNCTIONS MPQ8632D-6/MPQ8632D-12 PIN # Name 1 EN 2 FREQ 3 FB 4 SS 5 AGND 6 PG 7 VCC 8 BST 9, 14 IN 10, 11, 12, 13 PGND 15, 16 SW Description Enable. Digital input that turns the regulator on or off. Drive EN high to turn on the regulator, drive it low to turn it off. Connect EN to IN through a pull-up resistor or a resistive voltage divider for automatic startup. Do not float this pin. Frequency Set. Require a resistor connected between FREQ and IN to set the switching frequency. The input voltage and the resistor connected to the FREQ pin determine the ON time. The connection to the IN pin provides line feed-forward and stabilizes the frequency during input voltage’s variation. Feedback. Connect to the tap of an external resistor divider from the output to GND to set the output voltage. FB is also configured to realize over-voltage protection (OVP) by monitoring output voltage. MPQ8632D-6 and MPQ8632D-12 provide nonlatch OVP mode. Please refer to the section “Over-Voltage-Protection (OVP)”. Place the resistor divider as close to FB pin as possible. Avoid using vias on the FB traces. Soft Start/Shut-Down. Connect an external capacitor to program the soft start/shutdown time for the switch mode regulator. The soft start time is the half of the soft shut-down time. Analog ground. The control circuit reference. Power Good. The output is an open drain signal. Require a 100kΩ typical pull-up resistor to a DC voltage to indicate high if the output voltage exceeds 90% of the nominal voltage. Recommend a 10nF capacitor from PG to GND when the PG pull up resistor is