Datasheet

User's Guide

SLUU506–June 2011

Dual Output Synchronous Buck Converter

1 Introduction

The TPS40322EVM-679 evaluation module (EVM) is a dual output synchronous buck converter. The EVM

delivers 1.2 V at 10 A and 1.8 V at 10 A from a 12-V nominal DC input voltage. The module uses the

TPS40322 Dual Output or Two-Phase Synchronous Buck Controller and the CSD86330Q3D Synchronous

Buck NexFET™ Power Block in a 500-kHz application.

2 Description

TPS40322EVM-679 is designed to use a regulated 8.0-V

to 15.0-V

bus to produce two high-current,

regulated outputs. Both outputs are capable of supplying up to 10 A of load current. The

TPS40322EVM-679 is designed to demonstrate the TPS40322 in a typical regulated bus to dual-output,

low-voltage application while providing a number of test points to evaluate the performance of the

TPS40322 in a given application.

2.1 Typical Applications

• Multiple Rail Systems

• Telecom Base Stations

• Switcher/Router Networking

• xDSL Broadband Access

• Server and Storage Systems

2.2 Features

• 8-V to 15-V Input Range

• 1.2-V and 1.8-V Fixed Outputs

• 10-A

Steady-State Current Per Output

• 500-kHz Switching Frequency

• Output Sequence Capability

• Inductor DCR Current Sensing

• Voltage Mode Feedback Control With Input Feed Forward

Dual Output Synchronous Buck Converter SLUU506–June 2011

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