The TPSM8291x devices are a family of high-efficiency, low-noise and low-ripple current mode synchronous buck power modules. The devices are ideal for noise sensitive applications that would normally use an LDO for post regulation such as high-speed ADCs, clock and jitter cleaner, serializer, de-serializer, and radar applications.
The devices operate at a fixed switching frequency of 2.2 MHz or 1 MHz and can be synchronized to an external clock.
To further reduce the output voltage ripple, the device integrates loop compensation to operate with an optional second-stage ferrite bead L-C filter. This feature allows an output voltage ripple below 10 µV RMS.
Low-frequency noise levels, similar to a low-noise LDO, are achieved by filtering the internal voltage reference with an integrated capacitor on the NR/SS pin. An external capacitor can be added to the module for additional filtering.
The optional spread spectrum modulation scheme spreads the DC/DC switching frequency over a wider span, which lowers the mixing spurs.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPSM8291x 3-V to 17-V, 2-A/3-A Low-Noise and Low-Ripple Buck Power Module with Integrated Ferrite Bead Filter Compensation datasheet (Rev. C) | PDF | HTML | 18 Jul 2023 |
| White paper | Simplifying Power Conversion in High-Voltage Systems | PDF | HTML | 09 Nov 2023 | |
| White paper | Simplifying Power Architectures With Low-Noise Power Devices | PDF | HTML | 07 Nov 2023 | |
| Application brief | Solving power design challenges in oscilloscope applications | PDF | HTML | 31 Oct 2023 | |
| Application brief | Solving Power Design Challenges in Medical Imaging Applications | PDF | HTML | 12 Jul 2023 | |
| EVM User's guide | TPSM8291x Step-Down Power Module Evaluation Module User's Guide | PDF | HTML | 05 Oct 2022 | |
| Certificate | TPSM82913EVM EU RoHS Declaration of Conformity (DoC) | 27 Sep 2022 | ||
| Technical article | Minimize noise and ripple with a low-noise buck converter | PDF | HTML | 21 Oct 2020 | |
| Technical article | Understanding and managing buck regulator output ripple | PDF | HTML | 18 Jun 2020 |
For additional terms or required resources, click any title below to view the detail page where available.
The TPSM8291xEVM (BSR213) facilitates the evaluation of the TPSM8291x 2-A and 3-A pin-to-pin compatible low-noise ( < 20 μVRMS) and low-ripple ( < 10 μVRMS) buck power modules in small 4.5-mm by 5.5-mm QFN packages. The BSR213-001 uses the 3-A TPSM82913 to output a 1.2-V output voltage (...)
| Package | Pins | Download |
|---|---|---|
| B0QFN (RDU) | 28 | View options |
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