Microchip MOSFET driver, 5.25V-16V supply, 1A output, QFN-16
85V Three-phase MOSFET driver with adaptive dead time
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, which maximizes power efficiency.
The MIC4606 also offers a wide operating supply range of 5.5V to 16V to maximize system efficiency. The low 5.5V operating voltage allows longer run times in battery-powered applications. This device’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 MIC4606-1 features four independent inputs while the MIC4606-2 utilizes two Pulse-Width Modulation (PWM) inputs, one for each side of the H-bridge. The MIC4606-1 and MIC4606-2 are available in a 16-pin, 4 mm × 4 mm QFN package and a 16-pin, 4 mm × 5 mm TSSOP package.
Key features
- Gate drive supply voltage range of 5.5V to 16V
- Advanced adaptive dead time
- Intelligent shoot-through protection
- Low power consumption: 235 μA total quiescent current
- Separate high-side and low-side undervoltage protection
- Junction temperature range of −40°C to +125°C
Applications
- Full-bridge motor drives
- Power inverters
- High-voltage step-down regulators
- Distributed power systems
- Stepper motors
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