TPS40422

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Dual Output or Multiphase Synchronous Buck Controller with PMBus

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Data sheet

document-pdfAcrobat TPS40422 Dual-Output or Two-Phase Synchronous Buck Controller with PMBus™ Interface datasheet (Rev. G) PDF | HTML

TPS40422

ACTIVE

Data sheet

Order now

Product details

Rating

Catalog

Topology

Multiphase

Iout (max) (A)

60

Vin (max) (V)

20

Vin (min) (V)

4.5

Vout (max) (V)

5.6

Vout (min) (V)

0.6

Control mode

Voltage mode

Features

Dynamic Voltage Scaling, Enable, Frequency synchronization, Multiple Outputs, PMBus, Phase Interleaving, Remote Sense

Duty cycle (max) (%)

90

Iq (typ) (A)

0.018

Number of phases

2

Operating temperature range (°C)

-40 to 125

Rating

Catalog

Topology

Multiphase

Iout (max) (A)

60

Vin (max) (V)

20

Vin (min) (V)

4.5

Vout (max) (V)

5.6

Vout (min) (V)

0.6

Control mode

Voltage mode

Features

Dynamic Voltage Scaling, Enable, Frequency synchronization, Multiple Outputs, PMBus, Phase Interleaving, Remote Sense

Duty cycle (max) (%)

90

Iq (typ) (A)

0.018

Number of phases

2

Operating temperature range (°C)

-40 to 125

VQFN (RHA)

40

36 mm² (6 mm × 6 mm)

WQFN (RSB)

40

25 mm² (5 mm × 5 mm)

Single Supply Operation: 4.5 V to 20 V
Output Voltage from 0.6 V to 5.6 V
Dual-output or Two-Phase Synchronous Buck Controller
PMBus™ Interface Capability
- Margining Up or Down with 2-mV Step
- Programmable Fault Limit and Response
- Output Voltage, Output Current Monitoring
- External Temperature Monitoring with 2N3904 Transistor
- Programmable UVLO ON and OFF Thresholds
- Programmable Soft-start Time and Turn-On and Turn-Off Delay
On-Chip Non-volatile Memory (NVM) to Store Custom Configurations
180° Out-of-Phase to Reduce Input Ripple
600-mV Reference Voltage with ±0 .5% Accuracy from 0°C to 85°C
Inductor DCR Current Sensing
Programmable Switching Frequency: 200 kHz to 1 MHz
Voltage Mode Control with Input Feed Forward
Current Sharing for Multiphase Operation
Supports Pre-biased Output
Differential Remote Sensing
External SYNC
BPEXT Pin Boosts Efficiency by Supporting External Bias Power Switch Over
OC, OV, UV, and OT Fault Protection
40-Pin, 6 mm × 6 mm VQFN Package with 0.5-mm Pitch
40-Pin, 5 mm × 5 mm WQFN Package with 0.4-mm Pitch
Create a Custom Design using the TPS40422 device with the WEBENCH® Power Designer

Single Supply Operation: 4.5 V to 20 V
Output Voltage from 0.6 V to 5.6 V
Dual-output or Two-Phase Synchronous Buck Controller
PMBus™ Interface Capability
- Margining Up or Down with 2-mV Step
- Programmable Fault Limit and Response
- Output Voltage, Output Current Monitoring
- External Temperature Monitoring with 2N3904 Transistor
- Programmable UVLO ON and OFF Thresholds
- Programmable Soft-start Time and Turn-On and Turn-Off Delay
On-Chip Non-volatile Memory (NVM) to Store Custom Configurations
180° Out-of-Phase to Reduce Input Ripple
600-mV Reference Voltage with ±0 .5% Accuracy from 0°C to 85°C
Inductor DCR Current Sensing
Programmable Switching Frequency: 200 kHz to 1 MHz
Voltage Mode Control with Input Feed Forward
Current Sharing for Multiphase Operation
Supports Pre-biased Output
Differential Remote Sensing
External SYNC
BPEXT Pin Boosts Efficiency by Supporting External Bias Power Switch Over
OC, OV, UV, and OT Fault Protection
40-Pin, 6 mm × 6 mm VQFN Package with 0.5-mm Pitch
40-Pin, 5 mm × 5 mm WQFN Package with 0.4-mm Pitch
Create a Custom Design using the TPS40422 device with the WEBENCH® Power Designer

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.

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Technical documentation

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Top documentation	Type	Title	Format options	Date
*	Data sheet	TPS40422 Dual-Output or Two-Phase Synchronous Buck Controller with PMBus™ Interface datasheet (Rev. G)	PDF \| HTML	Aug 26, 2022
	Application note	Multiphase Buck Design from Start to Finish, Part 1 (Rev. B)		Apr 7, 2021
	Selection guide	Power Management Guide 2018 (Rev. R)		Jun 25, 2018
	Application note	SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC		Feb 22, 2016
	Technical article	Select the correct PMBus POL solution for your application	PDF \| HTML	Aug 3, 2015
	Design guide	TPS40422 Design Example		Feb 16, 2012
	EVM User's guide	Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface		Jan 5, 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS40422EVM-091 — TPS40422 Dual Output or Multiphase Synchronous Buck Controller Evaluation Module

The Texas Instruments TPS40422EVM-091 evaluation module (EVM) helps designers evaluate the performance of the TPS40422 Dual Output or Multiphase Synchronous Buck Controller with PMBus. The EVM is designed to use a regulated 8.0Vdc to 14.0Vdc bus to produce two regulated outputs. One output is (...)

User guide: PDF

Supported products & hardware

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Application software & framework

FUSION_DIGITAL_POWER_DESIGNER — Digital Power Software

Fusion Digital Power™ graphical user interface (GUI) software is used to configure and monitor select Texas Instruments digital power controllers and sequencer/health monitors. The application uses the PMBus protocol to communicate with the device over serial bus by way of a TI USB adapter.

Supported products & hardware

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Application software & framework

FUSION_MFR_GUI — Fusion Digital Power Manufacturing Tool

The Fusion Digital Power Manufacturing Tool (aka MFR GUI) is a Graphical User Interface used to download firmware, upgrade firmware, configure, calibrate and test .

The MFR GUI supports the same devices as Fusion Digital Power Designer software. This tool is typically used in manufacturing (...)

Supported products & hardware

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Driver or library

PMBUSSW-LINUX — Linux Driver for PMBUS

The Linux driver supports PMBus controlled Buck Controllers. The Linux driver supports communication through the PMBus and interfaces with the HWMon framework.