Calculation tool
TPS544B25
4.5-V to 18-V, 20-A synchronous SWIFT™ buck converter with PMBus and frequency sync
Data sheet
TPS544B25
- 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 7 | 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 | ||
| Technical article | Select the correct PMBus POL solution for your application | PDF | HTML | 03 Aug 2015 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
TPS544B25EVM-681 — Single-Output DC-to-DC Converter with PMBus Interface
The TPS544B25EVM-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
- (...)
Simulation model
TPS544B25 TINA-TI Average Reference Design (Rev. A)
SLUM644A.TSC (104 KB) - TINA-TI Reference Design
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| LQFN-CLIP (RVF) | 40 | Ultra Librarian |
Ordering & quality
Information included:
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- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Information included:
- Fab location
- Assembly location
Support & training
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