Data Sheet

LT4322

analog.com

Rev. 0

2 of 29

TABLE OF CONTENTS

FEATURES..............................................................................1

Applications ..........................................................................1

Description ............................................................................1

Typical Application ...............................................................1

Revision History ....................................................................2

Specifications........................................................................3

Absolute Maximum Ratings ..................................................5

Pin Configurations and Function Descriptions ....................6

Typical Performance Characteristics ...................................7

BLOCK DIAGRAM .................................................................10

Theory of Operation............................................................10

Powering the LT4322 ......................................................10

Steady-State Operation..................................................11

Applications Information....................................................12

VDDA Capacitor Selection .................................................13

MOSFET Selection...........................................................13

GATE Capacitor Selection .............................................. 14

Output Capacitor COUT Selection.................................... 14

Input Snubber ................................................................ 15

Operation at Voltages Above 60V .................................. 15

Design Example.............................................................. 16

PCB Layout Considerations ........................................... 16

Reverse Recovery ........................................................... 17

Capacitively Loaded Full-Bridge Applications and VDDA

Refresh Currents............................................................. 18

DC Diode-OR Application ............................................... 19

Very High Input Reverse Voltage Blocking .................... 20

TYPICAL APPLICATIONS...................................................... 20

Outline Dimensions ............................................................ 26

Ordering Guide ................................................................... 28

RELATED PARTS ............................................................. 28

EVALUATION BOARDS......................................................... 28

REVISION HISTORY

02/2023 - Rev. 0: Initial Release