Analog Devices ADuM4135 High-Voltage Isolated IGBT Gate Driver is an optimized
single-channel gate driver for insulated gate bipolar transistors
(IGBTs). Based on Analog Devices iCoupler® technology, ADuM4135 provides
isolation from the input signal and the output gate drive. The ADuM4135 driver has a miller clamp to provide robust IGBT turn-off with a single rail supply when the gate voltage drops below 2V. Designers can operate using unipolar or bipolar secondary supplies with or without the miller clamp operation. The chip-scale transformers provide isolated communication of control information between the high voltage and low voltage domains of the chip. Information on the status of the chip may be read back from dedicated outputs. An integrated desaturation detection circuit protects against high voltage short circuit IGBT operation. The device's desaturation protection includes noise reducing features such as a 300ns masking time after switching event to mask voltage spikes due to initial turn-on. An internal 500µA current source allows for low part count, but the internal blanking switch allows for the addition of an external current source if more noise immunity is required. The secondary UVLO is set to 11V with common IGBT threshold levels in mind. The ADuM4135 High-Voltage Isolated IGBT Gate Driver is ideal for MOSFET/IGBT gate drivers, PV inverters, motor drives, and power supplies.