Texas Instruments 20A, 20 Vin, 1.2 Vout Synchronous Buck Converter Evaluation Module TPS51218EVM-496 TPS51218EVM-496 Scheda Tecnica

The TPS51218EVM evaluation module (EVM) is used to evaluate the TPS51218, a small-size, single buck
controller with adaptive on-time D-CAP™ mode, providing a fixed 1.2-V output at up to 20 A from a 12-V
input bus.

1

Description

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1.1

Typical Applications

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1.2

Features

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2

Electrical Performance Specifications

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3

Schematic

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4

Test Setup

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4.1

Test Equipment

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4.2

Recommended Test Setup

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5

Test Procedure

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5.1

Line/Load Regulation and Efficiency Measurement Procedure

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5.2

List of Test Points

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5.3

Equipment Shutdown

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6

Performance Data and Typical Characteristic Curves

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6.1

Efficiency

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6.2

Load Regulation

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6.3

Transient Response

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6.4

Output Ripple

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6.5

Switch Node Voltage

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6.6

Turnon Waveform

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6.7

Turnoff Waveform

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6.8

Output 1.1-V Prebias Turnon

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7

EVM Assembly Drawing and PCB Layout

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8

Bill of Materials

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1

TPS51218EVM Schematic

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2

Tip and Barrel Measurement for Vout Ripple

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3

TPS51218EVM Recommended Test Setup

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4

TPS51218EVM Efficiency

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5

TPS51218 Load Regulation

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6

TPS51218EVM Load Transient

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7

TPS51218EVM Load Transient

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8

Output Ripple

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9

Switching Node Waveform

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10

Enable Turnon Waveform

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Eco-mode, D-CAP are trademarks of Texas Instruments.

1

SLVU346 – January 2010

Copyright © 2010, Texas Instruments Incorporated