FSFR1700S

Encoders, Decoders, Converters Overview

The FSFR1700S is a Fairchild Power Switch (FPS) designed for half-bridge resonant converters. It integrates power MOSFETs with fast-recovery body diodes, a high-side gate drive, and an accurate current-controlled oscillator. The device supports variable frequency control with a fixed 50% duty cycle. Key electrical parameters include a maximum operating frequency of 300kHz and a fixed dead time of 350ns optimized for the internal MOSFETs. Protection functions include over-voltage protection (OVP), over-current protection (OCP), abnormal over-current protection (AOCP), and internal thermal shutdown (TSD).

Encoders, Decoders, Converters Feature Summary

• Integrates power MOSFETs with fast-recovery type body diodes.
• Provides variable frequency control with a fixed 50% duty cycle for half-bridge resonant topology.
• Includes built-in protection functions such as OVP, OCP, AOCP, and TSD.
• Features auto-restart operation for all protections.

Encoders, Decoders, Converters Applications

• PDP and LCD TVs
• Desktop PCs and Servers
• Adapters
• Telecom Power Supplies

Encoders, Decoders, Converters Procurement Notes

Verify component authenticity through authorized distributors or original manufacturer channels. Confirm datasheet revisions and RoHS compliance status prior to procurement. Ensure storage conditions meet semiconductor handling standards to prevent moisture sensitivity issues during assembly processes.

Encoders, Decoders, Converters Selection Notes

Select this component for designs requiring integrated half-bridge resonant converter solutions. Verify that the required switching frequency does not exceed 300kHz. Ensure the application environment stays within the specified thermal limits to activate internal thermal shutdown correctly if necessary.

Encoders, Decoders, Converters Part Context

The FSFR1700S belongs to the FSFR-XS series of highly integrated power switches. This series simplifies design by combining MOSFETs, gate drivers, and control circuits into a single package. It aims to improve productivity and performance in resonant converter applications compared to discrete solutions.

Encoders, Decoders, Converters Replacement Considerations

The FSFR1700XC is listed as a similar part number from Fairchild Semiconductor. Verify pinout compatibility and specific parameter differences before substitution. Check for any functional variations in protection thresholds or timing characteristics between the XS and XC suffixes.