ADUM1234: Isolated, Precision Half-Bridge Driver, 0.1 A Output

The ADuM1234* is an isolated, half-bridge gate driver that employs the Analog Devices, Inc. iCoupler(R) 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 ADuM1234 offers the benefit of true, galvanic isolation between the input and each output. Each output can be operated up to ±700 VPEAK 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 VPEAK.

As a result, the ADuM1234 provides reliable control over the switching characteristics of IGBT/MOSFET configurations over a wide range of positive or negative switching voltages.

产品应用领域 Applications

Isolated IGBT/MOSFET gate drives
Plasma displays
Industrial inverters
Switching power supplies

ADUM1234 特点

Isolated high-side and low-side outputs
0.1 A peak output current
CMOS input threshold levels
High frequency operation: 5 MHz maximum
High common-mode transient immunity: >75 kV/us
High temperature operation: 105°C
Wide body, RoHS compliant, 16-lead SOIC
UL1577 2500 V rms input-to-output withstand voltage

ADUM1234 功能框图

ADUM1234 芯片订购指南

产品型号	产品状态	封装	引脚	温度范围
ADUM1234BRWZ	量产	16 ld SOIC - Wide	16	工业
ADUM1234BRWZ-RL	量产	16 ld SOIC - Wide	16	工业