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TPS544C25
4.5-V to 18-V, 30-A synchronous SWIFT™ buck converter with PMBus and frequency sync
Data sheet
TPS544C25
- PMBus 1.2 Compliant Converters: 20 A and 30 A
- Input Voltage Range: 4.5 V to 18 V
- Output Voltage Range: 0.5 V to 5.5 V
- 5 mm × 7 mm LQFN Package
- Single Thermal Pad
- Integrated 5.5-mΩ and 2.0-mΩ Stacked NexFET™ Power Stage
- 500-mV to 1500-mV Reference for Adapative Voltage Scaling (AVS) and Margining through PMBus
- 0.5% Reference Accuracy at 600 mV and Above
- Lossless Low-Side MOSFET Current Sensing
- Voltage Mode Control with Input Feed-Forward
- Differential Remote Sensing
- Monotonic Start-Up into Pre-Biased Output
- Output Voltage and Output Current Reporting
- External Temperature Monitoring with 2N3904 Transistor
- Programmable via the PMBus interface
- VOUT_COMMAND and AVS VOUT Transition Rate
- Overcurrent Protection with Thermal Compensation
- UVLO, Soft-Start and Soft-Stop
- PGOOD, OV, UV, OT Levels
- Fault Responses
- Turn-On and Turn-Off Delays
- Thermal Shutdown
- Pin Strapping for Switching Frequency: 200 kHz to 1 MHz
- Frequency Synchronization to an External Clock
- Footprint Compatible 20-A, 30-A Converters
The TPS544x25 devices are PMBus 1.2 Compliant, non-isolated DC-DC converters with integrated FETs, capable of high-frequency operation and 20-A or 30-A current output from a 5 mm × 7 mm package. High-frequency, low-loss switching, provided by an integrated NexFET™ power stage and optimized drivers, allows for very high-density power solutions. The PMBus interface enables the AVS through VOUT_COMMAND, flexible converter configuration, as well as key parameters monitoring including output voltage, current and an optional external temperature. Response to fault conditions can be set to either restart, latch-off or ignore depending on system requirements.
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Technical documentation
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View all 9 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPS544x25 4.5-V to 18-V, 20-A and 30-A SWIFT Synchronous Buck Converters with PMBus and Frequency Synchronization datasheet | PDF | HTML | 15 May 2015 |
| EVM User's guide | TPS5442x5 Step-Down Converter Evaluation Module User's Guide (Rev. B) | PDF | HTML | 26 Aug 2021 | |
| Application note | Programming the NVM of PMBus Buck Converters to Support Mass-Production Needs (Rev. B) | 13 May 2019 | ||
| Analog Design Journal | Maximizing power density and thermal performance in power-module designs | 12 Dec 2018 | ||
| Application note | Analysis and Design of Input Filter for DC-DC Circuit | 27 Nov 2017 | ||
| Application note | SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC | 22 Feb 2016 | ||
| Analog Design Journal | MOSFET power losses and how they affect power-supply efficiency | 26 Jan 2016 | ||
| 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 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
TPS544C25EVM-681 — TPS544C25EVM-681 Evaluation Module
The TPS544C25EVM-681 evaluation module (EVM) is designed as a single output DC-DC converter that demonstrates a typical low-voltage application while providing a number of test points to evaluate the performance. It uses a nominal 12-V input bus to produce a regulated 0.95-V output at up to (...)
Driver or library
PMBUSSW-LINUX — Linux Driver for PMBUS
The Linux driver supports PMBus controlled Buck Controllers. The Linux driver supports communication through the PMBus and interfaces with the HWMon framework.
Linux Mainline Status
Available in Linux Main line: Yes
Available through git.ti.com: N/A
Supported Devices:
- tps40400
- tps40422
- tps544b20
- tps544b25
- (...)
Reference designs
PMP11399 — PMBus Power System for Enterprise Ethernet Switches Reference Design
PMP11399 is a complete PMBus power system for 3 ASIC/FPGA cores, DDR3 core memory, VTT termination, and auxiliary voltages commonly found on high-performance Ethernet Switches. The hardware is accompanied by a GUI that allows the user to perform real-time configuration and monitoring of the power (...)
Reference designs
PMP12004-HE — Reference Design for Powering a Xilinx Zynq UltraScale+ Remote Radio Head (RRH) or Backhaul (BH)
This design for powering Xilinx Zynq UltraScale+ (www.xilinx.com/power) Remote Radio Heads (RRH) features the TPS6508640 and is a small and highly efficient solution. The PMIC reduces size, cost, and power loss by having integrated rails into 1 device, high switching frequency and separate rails (...)
Reference designs
PMP11328 — 30A PMBus Reference Design for Xilinx Zynq Ultrascale+ ZU9EG MPSoC Core Rail for Base Stations
The PMP11328 is a high power density 30A PMBus power supply meeting the Xilinx Ultrascale+ ZU9EG FPGA core rail power specifications for Base Station Remote Radio Unit (RRU) applications. The power supply regulates 0.85V for the core rail at 25A in 55mm x 40mm total power supply PCB area. PMBus (...)
Reference designs
TIDEP0042 — Generating AVS SmartReflex Core Voltage for K2E Using TPS544C25 and PMBus Reference Design
The K2E requires the use of AVS SmartReflex control for the CVDD core voltage. This design provides method of generating the proper voltage using software and the PMBus interface of the TPS544C25. The circuit can be implemented on the XEVMK2EX.
Reference designs
TIDEP0041 — Generating AVS SmartReflex core voltage, PMBus for K2E reference design
The K2E requires the use of AVS SmartReflex control for the CVDD core voltage. This design provides method of generating the proper voltage without the need for any software. The circuit is currently implemented on the XEVMK2EX.
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| LQFN-CLIP (RVF) | 40 | Ultra Librarian |
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