Introduction; Setup; I/O Connector Description; Lm74700Evm Typical Application Circuit - Texas Instruments LM74700EVM User Manual

Introduction

1 Introduction
TI's LM74700 evaluation module (LM74700EVM) helps designers evaluate the operation and performance
of the LM74700-Q1 ideal diode controller. This evaluation module demonstrates how an N-channel power
MOSFET can emulate a very-low forward voltage diode with low I
through the IC. In this design scheme, the LM74700-Q1 is combined with a MOSFET and used in series
with a battery as a replacement for a Schottky diode and PFET, in reverse-polarity protection circuitry as
shown in Figure 1. For more information on the LM74700 functional and electrical characteristics, see
LM74700-Q1 Low I
2

Setup

This section describes the jumpers and connectors on the EVM, and how to properly connect, setup, and
use the LM74700EVM. Ensure the power supply is turned off while making connections on the board.
2.1

I/O Connector Description

• VIN J1: Power input connector to the positive rail of the input power supply
• GND1 J3: Ground connection for the power supply
• VOUT J2: Power output connector to the positive side of the load
• GND2 J4: Ground connection for the load
• Test Points: VIN, VOUT, GND1, and GND2 are test points
V
BAT
2
LM74700 Evaluation Module
reverse battery protection ideal diode
Q
EN
TVS
ANODE
VCAP
Figure 1. LM74700EVM Typical Application Circuit
Copyright © 2017–2019, Texas Instruments Incorporated
and low-leakage current flowing
Q
controller.
GATE CATHODE
LM74700
GND
Copyright © 2017, Texas Instruments Incorporated
SNOU153A – October 2017 – Revised February 2019
www.ti.com
Voltage
Regulator
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