Texas Instruments Evaluation Module for TPS53128 Dual Synchronous Step-Down Controller TPS53128EVM-620 TPS53128EVM-620 数据表

The TPS53128EVM-620 Evaluation Module presents an easy-to-use reference design for a common dual
output power supply using the TPS53128 controller in cost sensitive applications.

1

Introduction

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1.1

Description

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1.2

Application

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1.3

Features

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2

Electrical Performance Specifications

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3

Schematics

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4

Connector and Test Point Descriptions

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4.1

Enable Switches (SW1 and SW2)

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4.2

Switching Frequency Select Switch (SW3)

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4.3

Test Point Descriptions

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5

Test Setup

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5.1

Equipment

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5.2

Recommended Setup

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6

Test Procedure

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6.1

Start-up Procedure

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6.2

Line/Load Regulation and Efficiency Measurement Procedure

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6.3

Output Ripple Voltage Measurement Procedure

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6.4

Shutdown Procedure

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7

Performance Data and Typical Characteristic Curves

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7.1

Efficiency

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7.2

Line and Load Regulation

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7.3

Output Voltage Ripple

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7.4

Switch Node Waveforms

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8

EVM Assembly Drawings and Layout

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9

Bill of Materials

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1

TPS53128EVM-620 Schematic.

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2

Tip and Barrel Measurement for Output Voltage Ripple

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3

TPS53128EVM-620 Recommended Test Setup

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4

Efficiency vs Load

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5

Efficiency vs Load

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6

Output Voltage vs Load

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7

Output Voltage vs Load

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8

Output Voltage Ripple

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9

Output Voltage Ripple

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10

Switching Waveform

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11

Switching Waveform

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12

Top Assembly

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13

Bottom Assembly

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1

SLVU433 – February 2011

© 2011, Texas Instruments Incorporated