IR51HD420

Full Half-Bridge (H Bridge) Drivers Overview

The IR51HD420 is a high-voltage, high-speed self-oscillating half-bridge driver manufactured by Infineon Technologies. It integrates proprietary HVIC and latch-immune CMOS technologies to provide complete gate drive functionality for power MOSFETs in a compact package. The device features an internal bootstrap circuit and operates with a supply voltage range of 10V to 15.6V. Designed for robust performance, it supports load voltages up to 400V and delivers a peak output current of 700mA per channel. The component is housed in a 9-SIP, 7-lead through-hole package and is rated for junction temperatures ranging from -55°C to 150°C.

Full Half-Bridge (H Bridge) Drivers Feature Summary

• Integrates self-oscillating half-bridge circuitry with internal bootstrap capability
• Utilizes latch-immune CMOS technology for reliable operation under high dv/dt conditions
• Provides high-speed switching characteristics suitable for AC motor drives

Full Half-Bridge (H Bridge) Drivers Applications

• AC motor control systems
• Power MOSFET gate driving
• High-voltage inverter circuits

Full Half-Bridge (H Bridge) Drivers Procurement Notes

Verify the specific suffix code against official Infineon documentation to confirm pinout compatibility and electrical specifications. Confirm RoHS compliance status as legacy variants may differ. Ensure the supplier provides valid traceability documents. Check for obsolescence notices or lifecycle status updates directly from the manufacturer before finalizing procurement plans.

Full Half-Bridge (H Bridge) Drivers Selection Notes

Select this component when a self-oscillating half-bridge solution is required for high-voltage applications. It is suitable for designs needing integrated bootstrap functionality without external oscillator components. Consider the 9-SIP package constraints and thermal management requirements for the intended operating environment.

Full Half-Bridge (H Bridge) Drivers Part Context

This part belongs to the IR51H(D)XXX series of high-voltage ICs. These devices are designed to simplify the design of half-bridge drivers by combining logic, protection, and gate drive functions into a single package. The series is commonly used in industrial and consumer applications requiring robust high-side and low-side switching capabilities.

Full Half-Bridge (H Bridge) Drivers Replacement Considerations

Cross-reference with other parts in the IR51H(D)XXX family, such as the IR51H310, ensuring voltage ratings and package types match. Verify functional equivalence regarding self-oscillation frequency and output current capabilities before substitution.