TPS40422 Series

Dual Output or Multiphase Synchronous Buck Controller with PMBus

Catalog(4 parts)

Part	Current - Output▲▼	Outputs and Type▲▼	Outputs and Type	Board Type	Supplied Contents	Frequency - Switching▲▼	Main Purpose	Voltage - Output▲▼	Voltage - Input▲▼	Voltage - Input▲▼	Utilized IC / Part	Voltage - Supply (Vcc/Vdd)▲▼	Voltage - Supply (Vcc/Vdd)▲▼	Frequency - Switching▲▼	Frequency - Switching▲▼	Topology	Output Type	Number of Outputs▲▼	Package / Case	Supplier Device Package	Mounting Type	Function	Control Features	Operating Temperature▲▼	Operating Temperature▲▼	Output Configuration	Serial Interfaces
Texas Instruments TPS40422EVM-091 TPS40422 - DC/DC, Step Down 2, Non-Isolated Outputs Evaluation Board	15 A, 20 A	2 ul	Non-Isolated	Fully Populated	Board(s)	460000 Hz	DC/DC, Step Down	1.2000000476837158 V, 3.299999952316284 V	8 V	14 V	TPS40422
Texas Instruments TPS40422RSBT Buck Regulator Positive Output Step-Down PMBus DC-DC Controller IC 40-WQFN (5x5)												4.5 V	20 V	1000000 Hz	100000 Hz	Buck	Transistor Driver	2 ul	40-WFQFN Exposed Pad	40-WQFN (5x5)	Surface Mount	Step-Down	Frequency Control, Power Good	125 °C	-40 °C	Positive	PMBus
Texas Instruments TPS40422RSBR Buck Regulator Positive Output Step-Down PMBus DC-DC Controller IC 40-WQFN (5x5)												4.5 V	20 V	1000000 Hz	100000 Hz	Buck	Transistor Driver	2 ul	40-WFQFN Exposed Pad	40-WQFN (5x5)	Surface Mount	Step-Down	Frequency Control, Power Good	125 °C	-40 °C	Positive	PMBus
Texas Instruments TPS40422RHAT Buck Regulator Positive Output Step-Down PMBus DC-DC Controller IC 40-VQFN (6x6)												4.5 V	20 V	1000000 Hz	100000 Hz	Buck	Transistor Driver	2 ul	40-VFQFN Exposed Pad	40-VQFN (6x6)	Surface Mount	Step-Down	Frequency Control, Power Good	125 °C	-40 °C	Positive	PMBus

Key Features

• Single Supply Operation: 4.5 V to 20 VOutput Voltage from 0.6 V to 5.6 VDual-output or Two-Phase Synchronous Buck ControllerPMBus™ Interface CapabilityMargining Up or Down with 2-mV StepProgrammable Fault Limit and ResponseOutput Voltage, Output Current MonitoringExternal Temperature Monitoring with 2N3904 TransistorProgrammable UVLO ON and OFF ThresholdsProgrammable Soft-start Time and Turn-On and Turn-Off DelayOn-Chip Non-volatile Memory (NVM) to Store Custom Configurations180° Out-of-Phase to Reduce Input Ripple600-mV Reference Voltage with ±0 .5% Accuracy from 0°C to 85°CInductor DCR Current SensingProgrammable Switching Frequency: 200 kHz to 1 MHzVoltage Mode Control with Input Feed ForwardCurrent Sharing for Multiphase OperationSupports Pre-biased OutputDifferential Remote SensingExternal SYNCBPEXT Pin Boosts Efficiency by Supporting External Bias Power Switch OverOC, OV, UV, and OT Fault Protection40-Pin, 6 mm × 6 mm VQFN Package with 0.5-mm Pitch40-Pin, 5 mm × 5 mm WQFN Package with 0.4-mm PitchCreate a Custom Design using the TPS40422 device with theWEBENCH® Power DesignerSingle Supply Operation: 4.5 V to 20 VOutput Voltage from 0.6 V to 5.6 VDual-output or Two-Phase Synchronous Buck ControllerPMBus™ Interface CapabilityMargining Up or Down with 2-mV StepProgrammable Fault Limit and ResponseOutput Voltage, Output Current MonitoringExternal Temperature Monitoring with 2N3904 TransistorProgrammable UVLO ON and OFF ThresholdsProgrammable Soft-start Time and Turn-On and Turn-Off DelayOn-Chip Non-volatile Memory (NVM) to Store Custom Configurations180° Out-of-Phase to Reduce Input Ripple600-mV Reference Voltage with ±0 .5% Accuracy from 0°C to 85°CInductor DCR Current SensingProgrammable Switching Frequency: 200 kHz to 1 MHzVoltage Mode Control with Input Feed ForwardCurrent Sharing for Multiphase OperationSupports Pre-biased OutputDifferential Remote SensingExternal SYNCBPEXT Pin Boosts Efficiency by Supporting External Bias Power Switch OverOC, OV, UV, and OT Fault Protection40-Pin, 6 mm × 6 mm VQFN Package with 0.5-mm Pitch40-Pin, 5 mm × 5 mm WQFN Package with 0.4-mm PitchCreate a Custom Design using the TPS40422 device with theWEBENCH® Power Designer

Description

The TPS40422 is a dual-output PMBus protocol, synchronous buck controller. It can be configured also for a single, two-phase output. The wide input range supports 5-V and 12-V intermediate buses. The accurate reference voltage satisfies the need of precision voltage to the modern ASICs and potentially reduces the output capacitance. Voltage mode control reduces noise sensitivity and also ensures low duty ratio conversion. The TPS40422 is a dual-output PMBus protocol, synchronous buck controller. It can be configured also for a single, two-phase output. The wide input range supports 5-V and 12-V intermediate buses. The accurate reference voltage satisfies the need of precision voltage to the modern ASICs and potentially reduces the output capacitance. Voltage mode control reduces noise sensitivity and also ensures low duty ratio conversion.