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TPS544C20

ACTIVE

4.5-V to 18-V, 30-A synchronous SWIFT™ buck converter with PMBus programmability and monitoring

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Data sheet

TPS544C20

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 30 Vin (min) (V) 4.5 Vin (max) (V) 18 Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 1000 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Over Current Protection, PMBus, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Telemetry, UVLO adjustable, Voltage Margining Control mode D-CAP, D-CAP2 Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iq (typ) (A) 0.008
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 30 Vin (min) (V) 4.5 Vin (max) (V) 18 Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 1000 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Over Current Protection, PMBus, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Telemetry, UVLO adjustable, Voltage Margining Control mode D-CAP, D-CAP2 Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iq (typ) (A) 0.008
LQFN-CLIP (RVF) 40 35 mm² 7 x 5
  • PMBus-Enabled Converters: 20 A, 30 A
  • 4.5-V to 18-V input, 0.6-V to 5.5-V Output
  • 5 mm × 7 mm LQFN Package with 0.5-mm Pitch
  • Single Thermal Pad
  • Integrated 4.5-mΩ and 2.0-mΩ Stacked NexFET™ Power Stage
  • 600-mV, 0.5% Reference
  • Lossless, Low-Side MOSFET Current Sensing
  • Selectable D-CAP™ and D-CAP2™ Mode Control
  • Differential Remote Sensing
  • Monotonic Start-Up into Pre-Biased Output
  • Output Voltage Margin and Trim
  • Output Voltage and Output Current Reporting
  • External Temperature Monitoring with 2N3904
  • Programmable via PMBus
    • Overcurrent Protection
    • UVLO, Soft-Start
    • PGOOD, OV, UV, OT Levels
    • Fault Responses
    • Turn-On and Turn-Off Delays
  • Thermal Shutdown
  • Pin Compatible 20-A, 30-A Converters
  • PMBus-Enabled Converters: 20 A, 30 A
  • 4.5-V to 18-V input, 0.6-V to 5.5-V Output
  • 5 mm × 7 mm LQFN Package with 0.5-mm Pitch
  • Single Thermal Pad
  • Integrated 4.5-mΩ and 2.0-mΩ Stacked NexFET™ Power Stage
  • 600-mV, 0.5% Reference
  • Lossless, Low-Side MOSFET Current Sensing
  • Selectable D-CAP™ and D-CAP2™ Mode Control
  • Differential Remote Sensing
  • Monotonic Start-Up into Pre-Biased Output
  • Output Voltage Margin and Trim
  • Output Voltage and Output Current Reporting
  • External Temperature Monitoring with 2N3904
  • Programmable via PMBus
    • Overcurrent Protection
    • UVLO, Soft-Start
    • PGOOD, OV, UV, OT Levels
    • Fault Responses
    • Turn-On and Turn-Off Delays
  • Thermal Shutdown
  • Pin Compatible 20-A, 30-A Converters

The TPS544B20 and TPS544C20 devices are PMBus compatible, non-isolated DC-DC Integrated FET converters, capable of high-frequency operation and delivering 20-A , or 30-A current output from a 5 mm × 7 mm package, enabling high-power density and fast transient performance with minimal PCB area. The PMBus interface provides for converter configuration as well as monitoring of key parameters including output voltage, current and an optional external temperature. High-frequency, low-loss switching, provided by an integrated NexFET power stage and optimized drivers, allows for very high-density power solutions and reduced inductor and filter capacitor sizes. Response to fault conditions can be set to either restart or latch off depending on system requirements.

The TPS544B20 and TPS544C20 devices are PMBus compatible, non-isolated DC-DC Integrated FET converters, capable of high-frequency operation and delivering 20-A , or 30-A current output from a 5 mm × 7 mm package, enabling high-power density and fast transient performance with minimal PCB area. The PMBus interface provides for converter configuration as well as monitoring of key parameters including output voltage, current and an optional external temperature. High-frequency, low-loss switching, provided by an integrated NexFET power stage and optimized drivers, allows for very high-density power solutions and reduced inductor and filter capacitor sizes. Response to fault conditions can be set to either restart or latch off depending on system requirements.
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Technical documentation

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Type Title Date
* Data sheet TPS544x20 4.5-V to 18-V, 20-A, and 30-A SWIFT Synchronous Buck Converters with PMBus datasheet (Rev. B) PDF | HTML 29 Apr 2016
EVM User's guide TPS544x20 Step-Down Converter Evaluation Module User's Guide (Rev. B) PDF | HTML 27 Aug 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Application note Programming the NVM of PMBus Buck Converters to Support Mass-Production Needs (Rev. B) 13 May 2019
Application note Practical Tips to Get Accurate Readouts 12 Jun 2018
Technical article Getting started with PMBus PDF | HTML 14 Sep 2017
Application note SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC 22 Feb 2016
Product overview TPS544B20 and TPS544C20 Quick Reference Guide 09 Nov 2015
Technical article Select the correct PMBus POL solution for your application PDF | HTML 03 Aug 2015
Application note Not All Jitter Is Created Equal (Rev. A) 04 Jul 2015
Technical article Control your power device with PMBus™ PDF | HTML 12 Jun 2015
Technical article How to tighten PMBus output current measurement accuracy PDF | HTML 05 Jun 2015
Application note D-CAP(TM) Mode With All-Ceramic Output Capacitor Application 03 Feb 2011

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