Low output noise < 20 µV RMS (100 Hz to 100 kHz)
Low output voltage ripple < 10 µV RMS after ferrite bead
High PSRR of > 65 dB (up to 100 kHz)
2.2-MHz or 1-MHz fixed frequency peak current mode control
Synchronizable with external clock (optional)
Integrated loop compensation supports ferrite bead for second stage L-C filter with 30-dB attenuation (optional)
Spread spectrum modulation (optional)
3.0-V to 17-V input voltage range
0.8-V to 5.5-V output voltage range
57-mΩ/20-mΩ R DSon
Output voltage accuracy of ±1%
Precise enable input allows
- User-defined undervoltage lockout
- Exact sequencing
Adjustable soft start
Power-good output
Output discharge (optional)
–40°C to 125°C junction temperature range
- –55°C to 125°C for -ET versions
Create a custom design using the TPSM8291x with the WEBENCH Power Designer

Low output noise < 20 µV RMS (100 Hz to 100 kHz)
Low output voltage ripple < 10 µV RMS after ferrite bead
High PSRR of > 65 dB (up to 100 kHz)
2.2-MHz or 1-MHz fixed frequency peak current mode control
Synchronizable with external clock (optional)
Integrated loop compensation supports ferrite bead for second stage L-C filter with 30-dB attenuation (optional)
Spread spectrum modulation (optional)
3.0-V to 17-V input voltage range
0.8-V to 5.5-V output voltage range
57-mΩ/20-mΩ R DSon
Output voltage accuracy of ±1%
Precise enable input allows
- User-defined undervoltage lockout
- Exact sequencing
Adjustable soft start
Power-good output
Output discharge (optional)
–40°C to 125°C junction temperature range
- –55°C to 125°C for -ET versions
Create a custom design using the TPSM8291x with the WEBENCH Power Designer

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.

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.

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17-V VIN, 3-A low-noise and low-ripple buck module with integrated ferrite bead filter compensation Higher current module

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	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	TPSM82912EVM EU Declaration of Conformity (DoC)		27 Sep 2022

Design & development

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Evaluation board

TPSM82912EVM — TPSM82912 evaluation module for 2-A low-noise and low-ripple buck module

The TPSM82912 evaluation module (EVM) (BSR213) facilitates the evaluation of the TPSM82912. TPSM82912 and TPSM82913 are 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 (...)

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