TPS62912 Series

17-VIN, 2-A low-noise and low-ripple buck converter with integrated ferrite bead filter compensation

Catalog(1 parts)

Part	Voltage - Input (Min)▲▼	Supplier Device Package	Operating Temperature▲▼	Operating Temperature▲▼	Mounting Type	Output Type	Topology	Voltage - Output (Min/Fixed)▲▼	Output Configuration	Current - Output▲▼	Frequency - Switching▲▼	Voltage - Output (Max)▲▼	Number of Outputs▲▼	Package / Case	Function	Synchronous Rectifier▲▼	Voltage - Input (Max)▲▼
Texas Instruments TPS62912RPUR Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 2A 10-PowerVFQFN	3 V	10-VQFN-HR (2x2)	150 °C	-40 °C	Surface Mount	Adjustable	Buck	0.800000011920929 V	Positive	2 A	1000000 Hz, 2200000 Hz	5.5 V	1 ul	10-PowerVFQFN	Step-Down		17 V

Key Features

• Low output 1/f noise < 20 µVRMS(100 Hz to 100 kHz)Low output voltage ripple < 10 µVRMSafter 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 150°C junction temperature range2.0-mm × 2.0-mm QFN with 0.5-mm pitchCreate a custom design using the TPS6291x with theWEBENCHPower DesignerLow output 1/f noise < 20 µVRMS(100 Hz to 100 kHz)Low output voltage ripple < 10 µVRMSafter 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 150°C junction temperature range2.0-mm × 2.0-mm QFN with 0.5-mm pitchCreate a custom design using the TPS6291x with theWEBENCHPower Designer

Description

The TPS6291x devices are a family of high-efficiency, low noise and low ripple current mode synchronous buck converters. 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 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 a capacitor connected to the NR/SS pin. The optional spread spectrum modulation scheme spreads the DC/DC switching frequency over a wider span, which lowers the mixing spurs. The TPS6291x devices are a family of high-efficiency, low noise and low ripple current mode synchronous buck converters. 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 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 a capacitor connected to the NR/SS pin. The optional spread spectrum modulation scheme spreads the DC/DC switching frequency over a wider span, which lowers the mixing spurs.