RENESAS HIP4081AIBZ Full Bridge N-Channel FET Driver IC, SOIC-20

The RENESAS HIP4081AIBZ is a high-frequency, medium-voltage Full-bridge N-channel FET Driver Integrated Circuit (IC). Designed for precision and reliability, it is capable of driving every possible switch combination, except those that would cause a damaging shoot-through condition. This robust driver can operate at switching frequencies up to an impressive 1MHz, making it exceptionally well-suited for demanding applications such as driving voice coil motors, high-frequency switching power amplifiers, and sophisticated power supplies. It is also an excellent choice for controlling medium-voltage brush motors.

A key performance feature is its short propagation delay of approximately 55 nanoseconds. This minimises control loop latency, allowing for higher crossover frequencies and enabling dead-times to be adjusted to near zero. The result is significantly reduced distortion and rapid, precise control of the driven load, which is critical for high-performance systems.

Core Features & Specifications

• Independently drives four N-channel MOSFETs in a full-bridge configuration.
• Features an on-chip charge-pump and bootstrap upper bias supplies for efficient operation.
• Supports a bootstrap supply maximum voltage of 95VDC.
• Capable of driving a 1000pF load at 1MHz in free air at 50°C.
• Incorporates user-programmable dead time for optimal switching control.
• Includes a DIS (disable) function that overrides input control for added safety.
• Engineered for very low power consumption.
• Integrated under-voltage protection safeguards the device and system.
• Supply voltage range from 9.5V to 15V.
• Operating temperature range from -40°C to 85°C.

Presented in a compact SOIC-20 surface-mount package, this IC is a fundamental component for advanced electronic designs requiring efficient and reliable high-side and low-side switching.