FDMF8705

Full Half-Bridge (H Bridge) Drivers Overview

The FDMF8705 is a half-bridge gate driver manufactured by onsemi, formerly Fairchild Semiconductor. It is designed for synchronous buck converters and utilizes DrMOS technology within a 56-Power88 module package. The device operates with a supply voltage range of 6.4V to 13.5V and supports a peak output current of 65A per channel. It features an integrated bootstrap circuit and offers protection against breakdown and under-voltage lockout (UVLO). The component functions at temperatures between -55°C and +150°C TJ.

Full Half-Bridge (H Bridge) Drivers Feature Summary

• Integrates high-side and low-side drivers in a single multi-chip module
• Includes built-in bootstrap circuitry for high-side drive
• Provides fault protection mechanisms including breakdown and UVLO

Full Half-Bridge (H Bridge) Drivers Applications

• Synchronous buck converters
• DrMOS power modules
• DC-DC converter designs

Full Half-Bridge (H Bridge) Drivers Procurement Notes

Verify the manufacturer status carefully as this part is listed as obsolete or discontinued by major distributors. Confirm if available stock represents original Fairchild Semiconductor inventory or subsequent onsemi production runs. Ensure the specific ordering suffix matches the required reel or cut tape configuration for your assembly process.

Full Half-Bridge (H Bridge) Drivers Selection Notes

Select this component when a compact, integrated solution for half-bridge driving is required. It is suitable for applications needing high peak current capability within a small footprint. Consider the 56-Power88 package constraints and thermal management requirements associated with DrMOS implementations in synchronous rectification circuits.

Full Half-Bridge (H Bridge) Drivers Part Context

This component belongs to the FDMF series of DrMOS devices from Fairchild Semiconductor, now part of onsemi. These modules combine gate drivers with power MOSFETs to simplify power stage design. The FDMF8705 specifically targets synchronous buck applications requiring robust protection and high efficiency in a consolidated package format.

Full Half-Bridge (H Bridge) Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the part is marked as obsolete, alternative sourcing requires verification of cross-reference compatibility with current onsemi product lines.