The ADuM1234 is an isolated, half-bridge gate driver that employs the Analog Devices, Inc. iCoupler® technology to provide independent and isolated high-side and low-side outputs. Combining high speed CMOS and monolithic transformer technology, the ADuM1234 achieves high precision while maintaining high isolation voltage and output current.
The ADuM1234 is an isolated, precision half‑bridge driver that provides independent high‑side and low‑side outputs with up to ±700 V peak isolation. It uses Analog Devices' iCoupler® technology to achieve high‑speed CMOS operation without the drawbacks of optocouplers.
The device supports a wide range of applications including IGBT/MOSFET gate drives for industrial inverters, plasma displays and switching power supplies. It offers high common‑mode transient immunity, a wide operating temperature range, and RoHS‑compliant packaging.
| Input Supply Voltage (VDD1) | 4.5 V – 5.5 V |
|---|---|
| Output Supply Voltage (VDDA, VDDB) | 12 V – 18 V |
| Input Supply Current (Quiescent) | 3.0 mA – 4.2 mA |
| Output Supply Current (Quiescent) | 0.3 mA – 1.2 mA |
| Maximum Pulse Width | 100 ns |
| Maximum Switching Frequency | 10 Mbps |
| Propagation Delay (tPHL) | 97 ns |
| Propagation Delay (tPLH) | 124 ns |
| Short‑Circuit Pulsed Current | 100 mA |
| Rated Dielectric Insulation Voltage | 2500 V rms |
| Common‑Mode Transient Immunity (Input‑to‑Output) | ±75 kV/µs |
| Operating Temperature Range | −40 °C to +105 °C |
The device operates with an input supply voltage (VDD1) between 4.5 V and 5.5 V.
The ADuM1234 is rated for 2500 V rms dielectric isolation.
The maximum guaranteed switching frequency is 10 Mbps.
It is specified for operation from –40 °C up to +105 °C.