Datasheet

User's Guide

SNVU205–APRIL 2013

LM5122EVM-2PH Evaluation Module

1 Introduction

The LM5122EVM-2PH evaluation module (EVM) provides the design engineer with a fully functional dual

phase synchronous boost converter to evaluate the Texas Instruments LM5122 synchronous boost

controller device. The EVM provides 28 V output at up to 7 A current from a 9 V to 20 V input. The EVM is

designed to start up from a single power supply without any additional bias voltage.

2 Features and Electrical Performance

• 9 V to 20 V input voltage range

• 28 V target output voltage

• Up to 7 A output current

• 250 kHz typical switching frequency

• Dual phase interleaved operation

Table 1. Electrical Performance Specifications

PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

Input Characteristics

Input Voltage 9 12 20 V

Input Current V

SUPPLY

= 12 V, I

LOAD

= 7A 17 A

Output Characteristics

Output Voltage I

LOAD

= 7A 27.02 28 28.98 V

Output Current 7 A

System Characteristics

Switching Frequency 250 kHz

Full Load Efficiency V

SUPPLY

= 12 V 96%

SUPPLY

= 20 V 98%

3 Test Points

3.1 Test Points

Table 2. Pin Descriptions

PIN NAME DESCRIPTIONS

TP7, TP8 Power Ground

TP5, TP9, TP10 Analog Ground

TP6 UVLO

J1#1 External Synchronization Pulse Positive Input

J1#2 External Synchronization Pulse Negative Input

LM5122EVM-2PH Evaluation Module SNVU205–APRIL 2013

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