Microchip MIC4605

Microchip MIC4605 device is an 85V half-bridge MOSFET gate driver that features adaptive-dead-time and shoot-through protection. The adaptive-dead-time circuitry actively monitors the half-bridge outputs to minimize the time between high-side and low-side MOSFET transitions. This maximizes power efficiency. Anti-shoot-through circuitry prevents erroneous inputs and noise from turning both MOSFETS on at the same time. This device 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. Additionally, the MIC4605’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 MIC4605 is available in an 8-pin SOIC package and a tiny 10-pin 2.5 × 2.5 mm TDFN package. Both packages have an operating junction temperature range of −40°C to +125°C

Features

• Gate drive supply voltage range of 5.5V to 16V
• Advanced adaptive dead time
• Intelligent shoot-through protection:
  • MIC4605-1: dual TTL inputs
  • MIC4605-2: single PWM input
• Enable input for on/off control
• On-chip bootstrap diode
• Fast 35 ns propagation times
• Drives 1000 pF load with 20 ns rise and fall times
• Low power consumption of 135 µA quiescent current
• Separate high-side and low-side undervoltage protection
• Junction temperature range of −40°C to +125°C
• AEC-Q100 qualified for the SOIC package

Applications

• Appliances
• e-bikes
• Automotive applications
• Fans
• Power inverters