TPSM82912 Series
17-V, 2-A low-noise and low-ripple buck module with integrated ferrite bead filter compensation
Manufacturer: Texas Instruments
Catalog
17-V, 2-A low-noise and low-ripple buck module with integrated ferrite bead filter compensation
Key Features
• Low output noise < 20 µVRMS(100 Hz to 100 kHz)Low output voltage ripple < 10 µVRMS after ferrite beadHigh PSRR of > 65 dB (up to 100 kHz)2.2-MHz or 1-MHz fixed frequency peak current mode controlSynchronizable 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 range0.8-V to 5.5-V output voltage range57-mΩ/20-mΩ RDSonOutput voltage accuracy of ±1%Precise enable input allowsUser-defined undervoltage lockoutExact sequencingAdjustable soft startPower-good outputOutput discharge (optional)–40°C to 125°C junction temperature range–55°C to 125°C for -ET versionsCreate a custom design using the TPSM8291x with theWEBENCHPower DesignerLow output noise < 20 µVRMS(100 Hz to 100 kHz)Low output voltage ripple < 10 µVRMS after ferrite beadHigh PSRR of > 65 dB (up to 100 kHz)2.2-MHz or 1-MHz fixed frequency peak current mode controlSynchronizable 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 range0.8-V to 5.5-V output voltage range57-mΩ/20-mΩ RDSonOutput voltage accuracy of ±1%Precise enable input allowsUser-defined undervoltage lockoutExact sequencingAdjustable soft startPower-good outputOutput discharge (optional)–40°C to 125°C junction temperature range–55°C to 125°C for -ET versionsCreate a custom design using the TPSM8291x with theWEBENCHPower Designer
Description
AI
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 µVRMS.
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 µVRMS.
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.