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TPS40422

ACTIVE

Dual Output or Multiphase Synchronous Buck Controller with PMBus

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Data sheet

TPS40422

ACTIVE
Data sheet Order now

Product details

Vin (min) (V) 4.5 Vin (max) (V) 20 Iout (max) (A) 60 Operating temperature range (°C) -40 to 125 Control mode Voltage mode Topology Multiphase Rating Catalog Vout (min) (V) 0.6 Vout (max) (V) 5.6 Features Dynamic Voltage Scaling, Enable, Frequency synchronization, Multiple Outputs, PMBus, Phase Interleaving, Remote Sense Iq (typ) (µA) 18000 Duty cycle (max) (%) 90 Number of phases 2
Vin (min) (V) 4.5 Vin (max) (V) 20 Iout (max) (A) 60 Operating temperature range (°C) -40 to 125 Control mode Voltage mode Topology Multiphase Rating Catalog Vout (min) (V) 0.6 Vout (max) (V) 5.6 Features Dynamic Voltage Scaling, Enable, Frequency synchronization, Multiple Outputs, PMBus, Phase Interleaving, Remote Sense Iq (typ) (µA) 18000 Duty cycle (max) (%) 90 Number of phases 2
VQFN (RHA) 40 36 mm² 6 x 6 WQFN (RSB) 40 25 mm² 5 x 5
  • 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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Type Title Date
* Data sheet TPS40422 Dual-Output or Two-Phase Synchronous Buck Controller with PMBus™ Interface datasheet (Rev. G) PDF | HTML 26 Aug 2022
Application note Multiphase Buck Design from Start to Finish, Part 1 (Rev. B) 07 Apr 2021
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC 22 Feb 2016
Technical article Select the correct PMBus POL solution for your application PDF | HTML 03 Aug 2015
Design guide TPS40422 Design Example 16 Feb 2012
User guide Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface 05 Jan 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
Not available on TI.com
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.
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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 (...)

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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.

 

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:

  • tps40400
  • tps40422
  • tps544b20
  • tps544b25
  • (...)
View Options
Simulation model

TPS40422 PSpice Transient Model

SLUM250.ZIP (231 KB) - PSpice Model
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Simulation model

TPS40422 TINA-TI Transient Spice Model

SLUM548.ZIP (127 KB) - TINA-TI Spice Model
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Simulation model

TPS40422_Multiphase_Startup TINA-TI Reference Design

SLUM550.TSC (535 KB) - TINA-TI Reference Design
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Simulation model

TPS40422_Startup TINA-TI Reference Design

SLUM549.TSC (660 KB) - TINA-TI Reference Design
Download
Calculation tool

SLUC263 — Type III Compensation Calculation Tool

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC controllers (external FET)
TPS40007 — 2.25V-5.5V, 300 kHz, Synchronous Buck Controller, Source/ Sink, Prebias Operation TPS40009 — 2.25V-5.5V, 600 kHz, Synchronous Buck Controller, Source/ Sink, Prebias Operation TPS40021 — Enhanced Low Input (2.25V-5.5V) up to 1MHz Frequency, Sync. Buck Controller, source/sink TPS40040 — 2.25 to 5.5 V input, 300 kHz, synchronous buck controller with low pin count TPS40041 — 2.25 to 5.5 V input, 600 kHz, synchronous buck controller with low pin count TPS40055 — Wide Input (8V-40V) up to 1MHz Frequency Synchronous Buck Controller, source/sink TPS40057 — Wide Input (8V-40V) up to 1MHz Frequency Synchronous Buck Controller, source/sink with prebias TPS40075 — 4.5-V to 28-V, synchronous buck controller with voltage feed forward TPS40077 — 4.5-V to 28-V, synchronous buck controller with voltage feed forward in HTSSOP package TPS40101 — 4.5-V to 18-V, synchronous buck controller with advanced sequencing and output margining TPS40170 — 4.5 V to 60 V Wide-Input Synchronous PWM Buck Controller TPS40190 — 4.5-V to 15-V, 20-A synchronous buck controller TPS40192 — 4.5-V to 18-V, 20-A, 600-kHz synchronous buck controller with power good TPS40193 — 4.5-V to 18-V, 20-A, 300-kHz synchronous buck controller with power good TPS40195 — 4.5-V to 20-V, 20-A, synchronous buck controller with power good and synchronization TPS40200 — Wide Input Non-Synchronous Buck DC/DC Controller TPS40303 — 3-V to 20-V, 25-A, 300-kHz synchronous buck controller with FSS TPS40304 — 3-V to 20-V, 25-A, 600-kHz synchronous buck controller with FSS TPS40305 — 3-V to 20-V, 25-A, 1.2-MHz synchronous buck controller with FSS TPS40322 — Dual Output or Two-phase Synchronous Buck Controller TPS40400 — 3-V to 20-V, 30-A, synchronous buck controller with PMBus™, including Telemetry TPS40422 — Dual Output or Multiphase Synchronous Buck Controller with PMBus TPS5130 — 4.5-V to 28-V, triple synchronous buck controller with LDO controller
AC/DC & DC/DC converters (integrated FET)
TPS53311 — 2.9V to 6V Input, 3A Synchronous Step-Down Converter with Eco-Mode and Smooth PWM TPS53313 — 4.5-V to 16-V, 6-A synchronous buck converter with optimized light load efficiency TPS53316 — High-Efficiency, 5-A Step-Down Regulator with Integrated Switcher TPS56121 — 4.5-V to 14-V, 15-A synchronous SWIFT™ buck converter TPS56221 — 4.5-V to 14-V, 25-A synchronous SWIFT™ buck converter
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Package Pins CAD symbols, footprints & 3D models
VQFN (RHA) 40 Ultra Librarian
WQFN (RSB) 40 Ultra Librarian
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Ordering & quality

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  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

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