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Isolated Half-Bridge Driver,

0.1 A Amp Output

ADuM1230

GENERAL DESCRIPTION

The ADuM12301 is an isolated half-bridge gate driver that employs Analog Devices’ iCoupler® technology to provide independent and isolated high-side and low-side outputs. Combining high speed CMOS and monolithic transformer technology, this isolation component provides outstanding performance characteristics superior to optocoupler-based solutions.

By avoiding the use of LEDs and photodiodes, this iCoupler gate drive device is able to provide precision timing characteristics not possible with optocouplers. Furthermore, the reliability and performance stability problems associated with optocoupler LEDs are avoided.

In comparison to gate drivers employing high voltage level translation methodologies, the ADuM1230 offers the benefit of true, galvanic isolation between the input and each output. Each output may be operated up to ±700 VP relative to the input, thereby supporting low-side switching to negative voltages. The differential voltage between the high-side and low-side can be as high as 700 VP.

As a result, the ADuM1230 provides reliable control over the switching characteristics of IGBT/MOSFET configurations over a wide range of positive or negative switching voltages.

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FEATURES

Isolated high-side and low-side outputs

High-side or low-side relative to input: ±700 VPEAKHigh-side/low-side differential: 700 VPEAK0.1 A peak output current

High frequency operation: 5 MHz max

High common-mode transient immunity: >50 kV/μs High temperature operation: 105°C Wide body, 16-lead SOIC

UL1577 2500 V rms input-to-output withstand voltage

APPLICATIONS

Isolated IGBT/MOSFET gate drives Plasma displays Industrial inverters

Switching power supplies

Protected by U.S. Patents 5,952,849 6,873,065, and other pending patents.

FUNCTIONAL BLOCK DIAGRAM

VIAVIBVDD1GND1DISABLENCNCVDD1DDAOAADDBOBB

05460-001

Figure 1.

Rev. A

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