Slide 1 Slide 2 Slide 3 Slide 4 Slide 5 Slide 6 Slide 7 Slide 8 Slide 9 Slide 10 Slide 11 Slide 12 Product List
What is an Isolated Gate Driver? Image of ROHM's BM6104 Isolated Driver

An isolated gate driver is a special category of driver normally used for high-power (kW) applications. The primary functions of the driver are: boosting the strength of the microcontroller (DSP) output signals, providing the high current necessary to quickly turn on (charge) and turn off (discharge) the IGBT or MOSFET power device, and providing good isolation separating the low-level microcontroller output signals from the DC bus voltage (often called DC Link). The isolated driver may provide additional features such as preventing simultaneous turn-on of upper and lower transistors, Miller Clamp drive to prevent unintended turn-on of the lower transistor, sensing if an output transistor comes out of saturation, soft turn-off when necessary, and isolated temperature monitoring.

PTM Published on: 2020-07-22