The TPS544B28 device is a small, high-efficiency, synchronous buck converter with an adaptive on-time D-CAP4 control mode. The control method provides low minimum on-time and fast load-transient response across the entire output voltage range without requiring an external compensation network.
The TPS544B28 device has differential remote sense, high-performance integrated MOSFETs, ±7.5% current telemetry accuracy ≥10A, and supports ±0.5% output voltage accuracy with internal feedback, VOSL = 1 or 0.5, and TJ = 0°C to +85°C. The device features accurate load and line regulation and Eco-mode or Forced Continuous Conduction Mode (FCCM) operation.
The PMBus interface with 1MHz clock support gives a convenient, standardized digital interface for device configuration as well as output voltage, output current, and die temperature telemetry. Pinstrap options allow for the configuration of the overcurrent limit, fault response, internal or external feedback, output voltage selection, and switching frequency. Internal NVM is also available to store a variety of the PMBus parameters.
The TPS544B28 device is a lead-free device. The device is RoHS compliant without exemption.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | TPS544B28 4V to 16V Input, 20A , Remote Sense Synchronous Buck Converter With PMBus® datasheet (Rev. A) | PDF | HTML | Jun 12, 2026 |
| Application brief | Powering FPGAs Supporting SmartVID using TI Switching Regulators and Modules With PMBus | PDF | HTML | Jul 21, 2026 | |
| Certificate | TPS544B28EVM Declaration of Conformity (DoC) (Rev. A) | Jan 24, 2025 | ||
| Certificate | TPS544B28RBHEVM EU Declaration of Conformity (DoC) (Rev. A) | Jan 24, 2025 |
For additional terms or required resources, click any title below to view the detail page where available.
The TPS544B28EVM is designed to provide a quick setup to evaluate TPS544B28 in a VAN package and gain familiarity with the device. The TPS544B28EVM is designed for a nominal 12V bus and to produce a regulated 1V output at up to 20A of load current. The TPS544B28EVM is designed to demonstrate PMBus® (...)
The TPS544B28RBHEVM is designed to provide a quick setup to evaluate the TPS544B28 in an RBH package and gain familiarity with the device. The TPS544B28RBHEVM is designed for a nominal 12V bus and to produce a regulated 1V output at up to 20A of load current. The TPS544B28RBHEVM is designed to (...)
Fusion Digital Power™ graphical user interface (GUI) software is used to configure and monitor select Texas Instruments digital power controllers and sequencer/health monitors. The application uses the PMBus protocol to communicate with the device over serial bus by way of a TI USB adapter.
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| WQFN-HR (VAN) | 19 | Ultra Librarian |
| WQFN-HR (RBH) | 19 | Ultra Librarian |
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