Isolated, Precision Half-Bridge Driver, 4 A Output Data Sheet ADuM7234 FEATURES GENERAL DESCRIPTION 1 Isolated high-side and low-side outputs The ADuM7234 is an isolated, half-bridge gate driver that Working voltage uses the Analog Devices, Inc., iCoupler technology to provide High side or low side relative to input: 350 V peak independent and isolated high-side and low-side outputs. High side/low side differential: 350 V peak Combining high speed CMOS and monolithic transformer 4 A peak output current technology, this isolation component provides outstanding High frequency operation: 1 MHz maximum performance characteristics superior to optocoupler-based High common-mode transient immunity: >25 kV/s solutions. High temperature operation: 105C By avoiding the use of LEDs and photodiodes, this iCoupler gate Narrow body, 16-lead SOIC drive device is able to provide precision timing characteristics Safety and regulatory approvals not possible with optocouplers. Furthermore, the reliability and UL recognition performance stability problems associated with optocoupler 1000 V rms for 1 minute per UL 1577 LEDs are avoided. APPLICATIONS In comparison to gate drivers that use high voltage level translation methodologies, the ADuM7234 offers the benefit Isolated IGBT/MOSFET gate drives of true, galvanic isolation between the input and each output Plasma displays and between each input. Each output can be operated at up to Industrial inverters 350 V peak relative to the input, thereby supporting low-side Switching power supplies switching to negative voltages. The differential voltage between the high side and low side can be as high as 350 V peak. As a result, the ADuM7234 provides reliable control over the switching characteristics of IGBT/MOSFET configurations over a wide range of positive or negative switching voltages. FUNCTIONAL BLOCK DIAGRAM NC 1 ADuM7234 16 V DDA V ENCODE DECODE IA 2 15 V OA V 3 14 IB GND A V 4 13 NC DD1 GND 5 12 NC 1 DISABLE 6 11 V DDB V 7 ENCODE DECODE 10 V DD1 OB NC 8 9 GND B Figure 1. 1 Protected by U.S. Patents 5,952,849 and 6,291,907. Rev. B Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20102013 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com 07990-001ADuM7234 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Regulatory Information ................................................................4 Applications ....................................................................................... 1 Absolute Maximum Ratings ............................................................5 General Description ......................................................................... 1 ESD Caution...................................................................................5 Functional Block Diagram .............................................................. 1 Pin Configuration and Function Descriptions ..............................6 Revision History ............................................................................... 2 Typical Performance Characteristics ..............................................7 Specifications ..................................................................................... 3 Applications Information .................................................................8 Electrical Characteristics ............................................................. 3 Common-Mode Transient Immunity ........................................8 Package Characteristics ............................................................... 4 Insulation Lifetime ........................................................................9 Insulation and Safety-Related Specifications ............................ 4 Outline Dimensions ....................................................................... 10 Recommended Operating Conditions ...................................... 4 Ordering Guide .......................................................................... 10 REVISION HISTORY 2/13Rev. A to Rev. B Created Hyperlink for Safety and Regulatory Approvals Entry in Features Section ................................................................. 1 Change to Table 5 ............................................................................. 4 1/10Revision A: Initial Version Rev. B Page 2 of 12