TPS40422 Buck Controller with PMBus

Texas Instruments' dual output or multiphase synchronous buck controller with PMBus

Image of Texas Instruments' TPS40422 Buck Controller with PMBusTexas Instruments' TPS40422 is a dual-output PMBus synchronous buck controller. It can be configured also for a single, two-phase output. Its wide input range can support 5 V and 12 V intermediate buses. The accurate reference voltage satisfies the need for precision voltage to the modern ASICs and potentially reduces the output capacitance. Voltage mode control is implemented to reduce noise sensitivity and also ensures low duty ratio conversion. 

Using the PMBus protocol, the TPS40422 margining function, reference voltage, fault limit, UVLO threshold, soft start time and turn on/off delay can be programmed. In addition, an accurate measurement system is implemented to monitor the output voltages, currents, and temperatures for each channel.

Features Applications
  • Single supply operation: 4.5 V to 20 V
  • Output voltage from 0.6 V to 5.6 V
  • Dual or two-phase synchronous buck controller
  • PMBus capability
  • Multiple rail systems
  • Telecom base station
  • Switcher/router networking
  • Server and storage system

TPS40422

ImageManufacturer Part NumberDescriptionAvailable Quantity
TPS40422RHAT datasheet linkIC REG CTRLR BUCK PMBUS 40VQFNTPS40422RHATIC REG CTRLR BUCK PMBUS 40VQFN799 - Immediate
TPS40422RHAT product page link

Evaluation Module

ImageManufacturer Part NumberDescriptionMain PurposeOutputs and TypeAvailable Quantity
TPS40422EVM-091 datasheet linkEVAL MODULE FOR TPS40422-091TPS40422EVM-091EVAL MODULE FOR TPS40422-091DC/DC, Step Down2, Non-Isolated2 - Immediate
31 - Factory Stock
TPS40422EVM-091 product page link
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Published: 2013-07-02