MIC4607 85V, Three-Phase MOSFET Driver with Adaptive Dead-Time, Anti-Shoot-Through and Overcurrent Protection Features General Description • Gate Drive Supply Voltage Up To 16V • Overcurrent Protection • Drives High-Side And Low-Side N-Channel MOSFETs With Independent Inputs Or With A Single PWM Signal • TTL Input Thresholds • On-Chip Bootstrap Diodes • Fast 35 ns Propagation Times • Shoot-Through Protection • Drives 1000 pF Load With 20 ns Rise And Fall Times • Low Power Consumption • Supply Undervoltage Protection • –40°C to +125°C Junction Temperature Range The MIC4607 is an 85V, three-phase MOSFET driver. The MIC4607 features a fast (35 ns) propagation delay time and a 20 ns driver rise/fall time for a 1 nF capacitive load. TTL inputs can be separate high-and low-side signals or a single PWM input with high and low drive generated internally. High-and low-side outputs are guaranteed to not overlap in either mode. The MIC4607 includes overcurrent protection as well as a high-voltage internal diode that charges the high-side gate drive bootstrap capacitor. Applications • Three-Phase and BLDC Motor Drives • Three-Phase Inverters A robust, high-speed, and low-power level shifter provides clean level transitions to the high-side output. The robust operation of the MIC4607 ensures that the outputs are not affected by supply glitches, HS ringing below ground, or HS slewing with high-speed voltage transitions. Undervoltage protection is provided on both the low-side and high-side drivers. The MIC4607 is available in a both a 28-pin 4 mm × 5 mm QFN and 28-pin TSSOP package with an operating junction temperature range of –40°C to +125°C. Typical Application Circuit MIC4607 Three-Phase Motor Driver DS20005610A-page 1 2016 Microchip Technology Inc.
