The MIC4606 is an 85V full-bridge MOSFET driver that features adaptive dead time and shoot-through protection. The adaptive dead time circuitry actively monitors both sides of the full-bridge to minimize the time between high-side and low-side MOSFET transitions, thus maximizing power efficiency. Antishoot-through circuitry prevents erroneous inputs and noise from turning both MOSFETs of each side of the bridge on at the same time.

The MIC4606 also offers a wide 5.5V to 16V operating supply range to maximize system efficiency. The low 5.5V operating voltage allows longer run times in battery-powered applications. Additionally, the MIC4606's adjustable gate drive sets the gate drive voltage to VDD for optimal MOSFET RDS(ON), which minimizes power loss due to the MOSFET's RDS(ON).

The MC4606-1 features four independent inputs while the MIC4606-2 utilizes two PWM inputs, one for each side of the H-bridge. The MIC4606-1 and MIC4606-2 are available in a 16-pin 4mm x 4mm QFN package with an operating temperature range of -40°C to 125°C.

  5.5V to 16V gate drive supply voltage range

  Advanced adaptive dead time

  Intelligent shoot-through protection

  MIC4606-1: 4 Independent TTL inputs

  MIC4606-2: 2 PWM inputs

  Enable input for on/off control

  On-chip bootstrap diodes

  Fast 35ns propagation times

  Drives 1000pF load with 20ns rise and fall times

  Low power consumption: 235μA total quiescent current

  Separate high- and low-side undervoltage protection

  -40°C to +125°C junction temperature range