MIC5022 Datasheet | Micrel Semiconductor

Micrel Half-Bridge MOSFET Driver General Description The MIC5022 half-bridge MOSFET driver is designed to operate at frequencies up to 100k Hz (5k Hz PWM for 2% to 100% duty cycle) and is an ideal choice for high speed applications such as motor control and SMPS (switch mode power supplies). A rising or falling edge on the input results in a current source pulse or sink pulse on the gate outputs. This output current pulse can turn on a 2000p F MOSFET in approximately 1µs. The MIC5022 then supplies a limited current (< 2m A), if necessary, to maintain the output states. Two overcurrent parators with nominal trip voltages of 50m V make the MIC5022 ideal for use with current sensing MOSFETs. External low value resistors may be used instead of sensing MOSFETs for more precise overcurrent control. Optional external capacitors placed on the CTH and CTL pins may be used to individually control the current shutdown duty cycles from approximately 20% to <1%. Duty cycles from 20% to about 75% are possible with individual pull-up resistors from CTL and CTH to VDD. An open collector output provides a fault indication when either sense input is tripped. The MIC5022 is available in 16-pin wide SOIC and 14-pin plastic DIP packages. Other members of the MIC502x family include the MIC5020 low-side driver and the MIC5021 high-side driver. Features - - - - - - - - - - 12V to 36V operation 600ns rise time into 1000p F (high side) TTL patible input with internal pull-down resistor Outputs interlocked to prevent cross conduction TTL patible enable Fault output indication Individual overcurrent limits Gate protection Internal charge pump (high-side) Current source drive scheme reduces EMI Applications - Motor control - Switch-mode power supplies Ordering Information Part Number MIC5022BWM MIC5022BN Temperature Range - 40°C to +85°C - 40°C to +85°C Package 16-pin Wide SOIC 14-pin Plastic DIP Typical Application +12V to +36V 1 10µF TTL Input (PWM signal) 2 3 4 CTH...