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Product Attributes

Introduction

The ADuM7223 is a 4.0 A isolated, half-bridge gate driver that employs iCoupler technology to provide independent and isolated high-side and low-side outputs. Combining high speed CMOS and monolithic transformer technology, these isolation components provide outstanding performance characteristics superior to alternatives such as the combination of pulse transformers and non-isolated gate drivers. By integrating the isolator and driver in a single package, propagation delay is a maximum of only 64 ns, and the propagation skew from channel to channel is a maximum of only 12 ns at 12 V. The ADuM7223 provides two independent isolation channels. The ADuM7223 operates with an input supply ranging from 3.0 V to 5.5 V, providing compatibility with lower voltage systems. The outputs operate in a wide range from 4.5 V to 18 V with three output voltage versions available. The 5 mm×5 mm, LGA package provides 565 V operating voltage from input to output and 700 V from output to output. In comparison to gate drivers employing high voltage level translation methodologies, this gate driver offers the benefit of true, galvanic isolation between the input and each output. As a result, this gate driver provides reliable control over the switching characteristics of IGBT/MOSFET configurations over a wide range of positive or negative switching voltages.

Features

• 4.0 A peak output current
• Working voltage High-side or low-side relative to input: 565 V peak High-side to low-side differential: 700 V peak
• High frequency operation: 1 MHz maximum
• Precise timing characteristics 64 ns maximum propagation delay 8.5 ns maximum channel-to-channel matching
• 3.0 V to 5.5 V input voltage
• 4.5 V to 18 V output drive
• UVLO supply at 2.8 V VDD1 A Version UVLO, VDDA and VDDB (VDD2) at 4.1 V B Version UVLO, VDDA and VDDB at 6.9 V C Version UVLO, VDDA and VDDB at 10.5 V
• CMOS input logic levels
• High common-mode transient immunity: >25 kV/μs
• High junction temperature operation: 125°C
• Default low output
• 5 mm×5 mm, 13-terminal LGA

Applications

• Switching power supplies
• Isolated IGBT/MOSFET gate drives
• Industrial inverters