Texas Instruments LM74700- Q1, User Manual

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1 Introduction
The LM74700-Q1 evaluation module (LM74700DDFEVM) assists designers to evaluate the operation and
performance of the LM74700-Q1 ideal diode controller (8-pin DDF package). This evaluation module
demonstrates how an N-channel power MOSFET can emulate a very-low forward voltage diode with low I
Q
and
low-leakage current flowing 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 2-1 . For more information on the LM74700-Q1 functional and electrical
characteristics, see LM74700-Q1 Low I
Q
reverse battery protection ideal diode controller .
2 Setup
This section describes the jumpers and connectors on the EVM, and how to properly connect, setup, and use
the LM74700DDFEVM. 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
LM74700
GATE CATHODE
EN
ANODE
VCAP
GND
V
BAT
TVS
Voltage
Regulator
Figure 2-1. LM74700DDFEVM Typical Application Circuit
Introduction www.ti.com
2 LM74700DDFEVM: Evaluation Module for LM74700-Q1 SNOU177 – DECEMBER 2020
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