The MIC5021YN is a high-side MOSFET Driver designed to operate at frequencies up to 100kHz and is an ideal choice for high speed applications using IGBTs. The MIC5021 can also operate as a circuit breaker with or without automatic retry. A rising or falling edge on the input results in a current source pulse or sink pulse on the gate output. This output current pulse can turn on a 2000pF MOSFET in approximately 550ns. The MIC5021 then supplies a limited current, if necessary to maintain the output state. An overcurrent comparator with a trip voltage of 50mV makes the MIC5021 ideal for use with a current sensing MOSFET. An external low value resistor may be used instead of a sensing MOSFET for more precise overcurrent control. A duty cycle from 20% to about 75% is possible with an optional pull-up resistor from CT to VDD.
TTL compatible input with internal pull-down resistor
Overcurrent limit
Gate to source protection
Internal charge pump
Compatible with current-sensing MOSFETs
Current source drive reduces EMI
100kHz Operation guaranteed over full temperature and operating voltage range
