The TPS546D24 is a highly integrated, non-isolated DC/DC converter capable of high frequency operation and 40-A current output from a 7-mm × 5-mm package. Two, three, and four TPS546D24 devices can be interconnected to provide up to 160 A on a single output. The device has an option to overdrive the internal 5-V LDO with an external 5-V supply via the VDD5 pin to improve efficiency and reduce power dissipation of the converter.
The TPS546D24 uses a proprietary fixed-frequency current-mode control with input feedforward and selectable internal compensation components for minimal size and stability over a wide range of output capacitances.
The PMBus interface with 1-MHz clock support gives a convenient, standardized digital interface for converter configuration as well as monitoring of key parameters including output voltage, output current, and internal die temperature. Response to fault conditions can be set to restart, latch off, or ignore, depending on system requirements. Back-channel communication between stacked devices enables all TPS546D24 converters powering a single output rail to share a single address to simplify system software/firmware design. Key parameters including output voltage, switching frequency, soft-start time, and overcurrent fault limits can also be configured through BOM selection without PMBus communication to support program free power-up.
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPS546D24 2.95-V to 16-V, 40-A, up to 4× Stackable, PMBus Buck Converter datasheet (Rev. A) | PDF | HTML | 04 Dec 2018 |
| Application note | DC/DC Converter Solutions for Hardware Accelerators in Data Center Applications (Rev. A) | PDF | HTML | 04 May 2021 | |
| Technical article | 3 big benefits of small cells | PDF | HTML | 26 May 2020 | |
| Application note | Powering the TPS546D24A Device Family From a Single 3.3-V Input Power Supply (Rev. A) | 04 Mar 2020 | ||
| Application note | Point-of-Load Solutions for Data Center App Implementing VR13.HC Vccin Spec (Rev. A) | PDF | HTML | 08 Jan 2020 | |
| Application note | Achieving Better than 1% Output Voltage Accuracy with TPS546D24A | 01 Dec 2019 | ||
| White paper | Small Cells, Big Impact: Designing Power Soutions for 5G Applications | 26 Jun 2019 | ||
| Application note | Programming the NVM of PMBus Buck Converters to Support Mass-Production Needs (Rev. B) | 13 May 2019 | ||
| Application note | DC/DC Point-of-load Power Solutions for Wired Networking Switch Systems | 11 Dec 2018 |
For additional terms or required resources, click any title below to view the detail page where available.
The TPS546D24AEVM-2PH evaluation module is a two-phase interleaved power supply with two TPS546D24 devices on the board. The design provides a regulated 0.8-V output up to 80-A DC steady-state output current. The device allows programming and monitoring via the PMBus interface. Output current is (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| LQFN-CLIP (RVF) | 40 | Ultra Librarian |
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