Texas Instruments LM74700EVM, Руководство пользователя

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LM74700
GATE CATHODE
EN
ANODE
VCAP
GND
V
BAT
TVS
Voltage
Regulator
Copyright © 2017, Texas Instruments Incorporated
Introduction
www.ti.com
2 SNOU153A – October 2017 – Revised February 2019
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Copyright © 2017–2019, Texas Instruments Incorporated
LM74700 Evaluation Module
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
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 1 . For more information on the LM74700 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 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
Figure 1. LM74700EVM Typical Application Circuit