Description
- Operating voltage up to 80V
- Drives N-channel MOSFETs (half, full, or 3-phase bridge)
- Programmable dead-time for switching safety
- High-speed operation with short propagation delay
- Under-voltage lockout protection
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The HIP4081 is a high-frequency, medium-voltage Full Bridge N-Channel MOSFET Driver IC. It is widely considered a “classic” in power electronics because of its ability to independently drive four N-Channel MOSFETs in a full-bridge configuration.
It is particularly popular in applications like DC motor control, Class-D audio amplifiers, and power supplies.
Key Features and Capabilities
- High Side/Low Side Drive: It can drive the upper and lower gates of two independent half-bridges.
- Voltage Range: It typically operates with a bias voltage of 10V to 15V but can handle bridge voltages up to 80V.
- Charge Pump: It features an internal charge pump that maintains the high-side gate drive even at 100% duty cycle (static operation).
- High Speed: It supports frequencies up to 1MHz, making it suitable for high-speed switching applications.
- Current Drive: It can provide up to 2.5A of peak gate current, allowing it to switch large MOSFETs quickly to minimize switching losses
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