FDMF6705B

Full Half-Bridge (H Bridge) Drivers Overview

The FDMF6705B is a high-performance, Xtra-Small DrMOS module from onsemi designed for synchronous buck converters. It integrates a dual gate driver and power MOSFETs in a compact 40-PQFN (6x6) package. The device supports PWM interfaces with an output current of 40 A per channel. Operating voltage ranges from 4.5 V to 5.5 V, while load voltages span 3 V to 24 V. Key timing parameters include a rise time of 6 ns and a fall time of 5 ns. The module features integrated bootstrap circuits and status flags, with fault protection against over-temperature, breakdown, and under-voltage lockout.

Full Half-Bridge (H Bridge) Drivers Feature Summary

• Integrates high-side and low-side drivers with power MOSFETs in a single DrMOS module
• Includes built-in bootstrap circuitry and status flag outputs
• Provides comprehensive fault protection mechanisms including thermal and UVLO safeguards

Full Half-Bridge (H Bridge) Drivers Applications

• Synchronous buck converter designs
• High-density power supply modules
• Point-of-load regulation systems

Full Half-Bridge (H Bridge) Drivers Procurement Notes

Verify component authenticity through authorized channels as the FDMF6705B has reached end-of-life status. Confirm that replacement strategies align with current project requirements due to potential obsolescence. Ensure all procurement activities account for the discontinuation notice issued by the manufacturer to avoid supply chain disruptions.

Full Half-Bridge (H Bridge) Drivers Selection Notes

Select this component for applications requiring high current density and fast switching speeds within a minimal footprint. The integrated DrMOS architecture reduces external component count compared to discrete solutions. Consider the specific thermal management needs associated with the PQFN package when designing the PCB layout for optimal heat dissipation.

Full Half-Bridge (H Bridge) Drivers Part Context

This part belongs to the XS DrMOS series by onsemi, focusing on miniaturization and efficiency. It serves as a complete half-bridge driver solution, eliminating the need for separate driver ICs and discrete MOSFETs. The technology utilizes silicon processes optimized for high-frequency operation and robust performance in demanding power conversion environments.

Full Half-Bridge (H Bridge) Drivers Replacement Considerations

• FDMF6705BT1G
• FDMF6705BDKR

Full Half-Bridge (H Bridge) Drivers FAQ

What is the maximum operating junction temperature?

The maximum operating junction temperature is +150°C.

Does the device support PWM control interface?

Yes, the FDMF6705B utilizes a PWM interface for controlling the high-side and low-side switches.