FDMF3170

Full Half-Bridge (H Bridge) Drivers Overview

The FDMF3170 is a low voltage smart power stage integrating a gate driver and optimized MOSFETs for synchronous buck DC-DC converters. It features a 39-PQFN package with a maximum output current of 70 A and continuous current of 55 A. The device operates within a supply voltage range of 4.5 V to 5.5 V, supporting 3.3 V and 5 V PWM logic levels. It includes integrated current monitoring (IMON) and temperature sensing (TMON), with rise and fall times of 9 ns and 6 ns respectively. Operating temperatures span from -40°C to +125°C.

Full Half-Bridge (H Bridge) Drivers Feature Summary

• Integrates high-side and low-side drivers with optimized power MOSFETs in a compact form factor.
• Provides real-time module-level current monitoring via an IMON signal to replace external sensing methods.
• Includes accurate temperature monitoring with a defined slope for thermal management.
• Offers comprehensive fault protection including over-current, over-temperature, and under-voltage lockout.

Full Half-Bridge (H Bridge) Drivers Applications

• High-frequency synchronous buck DC-DC converters
• Systems requiring precise current and temperature monitoring without external sensors
• Low voltage power management solutions

Full Half-Bridge (H Bridge) Drivers Procurement Notes

Verify component status as Not Recommended for New Designs (NRND). Confirm availability through authorized distributors as stock levels fluctuate. Check specific ordering suffixes for packaging variations such as reel or cut tape. Ensure compliance with RoHS and REACH requirements before integration into final products.

Full Half-Bridge (H Bridge) Drivers Selection Notes

Select this component for applications demanding high current density and integrated sensing capabilities. Evaluate the 39-PQFN package constraints against PCB layout requirements. Consider the NRND status for long-term production viability and potential need for future redesigns compared to active alternatives.

Full Half-Bridge (H Bridge) Drivers Part Context

Part of the FDMF31xx series of smart power stages from onsemi. This series focuses on integrating drivers and MOSFETs for efficient power conversion. The FDMF3170 specifically targets low voltage applications with high current outputs and advanced monitoring features.

Full Half-Bridge (H Bridge) Drivers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult manufacturer resources for potential next-generation replacements due to the NRND status.