TPS40422EVM-091: 1.2V @ 20A, 3.3V @ 15A, 8 ~ 14Vin

Summary

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 1.2Vdc at a maximum of 20A load current, and the other is 3.3V at a maximum of 15A load current. The EVM also features the CSD86350Q5D NexFET™ Power Block FETs. The EVM is designed to demonstrate the TPS40422 in a typical dual output application.

Features:

PMBus enabled analog controller
Programmable switching frequency: 200kHz–1MHz
Programmable soft-start
Programmable over current protection
Inductor resistance or series resistance used for current sensing
Remote voltage sense amplifier on the primary 1.2V output
Voltage Mode Feedback Control with Voltage Feedforward

Specifications

Manufacturer	Texas Instruments
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Multi Output
Eval Board Part Number	296-30302-ND
Eval Board Supplier	Texas Instruments
Eval Board	Normally In Stock
Topology	Step Down
Outputs and Type	2 Non-Isolated
Voltage Out: Highest Current First	1.2V, 3.3V
Current Out	20A, 15A
Voltage In	8 ~ 14 V
Efficiency @ Conditions	>95%, 8V in, 3.3V @ 5 ~ 15 A >92%, 12V in, 3.3V @ 4 ~ 15 A >90%, 8V in, 1.2V @ 4.3 ~ 20 A >89%, 12V in, 1.2V @ 7 ~ 20 A
Voltage Out Range	- Not Given
Features	Current Sharing Over Current Protection Over Voltage Protection PMBus Interface Pre-Biased Startup Remote Sensing Shutdown, Enable, Standby Soft Start Synchronizable Thermal Protection Under Voltage Protection, Brown-Out
Switching Frequency	200 kHz ~ 1 MHz
Standby Current [Typical]	- Not Given
Quiescent Current [Typical]	- Not Given
Component Count + Extras	94 + 25
Internal Switch	No
Design Author	Texas Instruments
Application / Target Market	Point of Load (PoL) Servers Telecom
Standby Current [Maximum]
Quiescent Current [Maximum]
Main I.C. Base Part	TPS40422
Date Created By Author	2012-01
Date Added To Library	2012-08