Datasheet

Description

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2 Current Limit Trip Selection................................................................................................ 8

3 Frequency Selection........................................................................................................ 8

4 Overshoot Reduction Selection ........................................................................................... 8

5 VID Bits Selection .......................................................................................................... 8

6 Phase Control Selection ................................................................................................... 9

7 1.5-V Output Option Selection ............................................................................................ 9

8 Functions of Each Test Points ............................................................................................ 9

9 EVM Bill of Materials ...................................................................................................... 19

1 Description

The TPS51727EVM is designed to use a regulated 12-V (8-V to 14-V) bus to produce a high-current,

regulated 1.5 V or 4-bit digital-to-analog converter (DAC) with a 0.875-V to 1.25-V output range at up to 40

A of the load current. The TPS51727EVM is designed to demonstrate the TPS51727 in a typical,

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

TPS51727.

1.1 2.1 Typical Applications

• High-current, low-voltage application for adapter and battery

• Distributed power supplies

• General dc-dc converters

1.2 Features

The TPS51727EVM features:

• Fixed 1.5 V or 4-bit VID with 0.875-V to 1.25-V output range

• 40-Adc steady-state current

• Auto-phase control to optimize efficiency depending on the load requirement

• Selectable 200/300/400/500-kHz switching frequency

• Selectable current limit

• Selectable output overshoot reduction ( OSR™)

• J11 for enable function

• Convenient test points for probing critical waveforms

• Six-layer printed-circuit board with 2-oz copper on the outside layers

ECO-mode, OSR are trademarks of Texas Instruments.

Using the TPS51727EVM, a Dual-Phase, Eco-mode™ Step-Down Power SLUU379–November 2009

Management IC for 40-A+ Application

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