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Integrated Power Switch (FPS™) for 200W Half-Bridge Resonant Converter

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FSFR1700XSL General Description

The FSFR-XS series includes highly integrated power switches designed for high-efficiency half-bridge resonant converters. Offering everything necessary to build a reliable and robust resonant converter, the FSFR-XS series simplifies designs while improving productivity and performance. The FSFR-XS series combines power MOSFETs with fast-recovery type body diodes, a high-side gate-drive circuit, an accurate current controlled oscillator, frequency limit circuit, soft-start, and built-in protection functions. The high-side gate-drive circuit has common-mode noise cancellation capability, which guarantees stable operation with excellent noise immunity. The fast-recovery body diode of the MOSFETs improves reliability against abnormal operation conditions, while minimizing the effect of reverse recovery. Using the zero-voltage-switching (ZVS) technique dramatically reduces the switching losses and significantly improves efficiency. The ZVS also reduces the switching noise noticeably, which allows a small-sized Electromagnetic Interference (EMI) filter.
The FSFR-XS series can be applied to resonant converter topologies such as series resonant, parallel resonant, and LLC resonant converters.

fsfr1700xsl fsfr1700xsl

Key Features

  • Variable Frequency Control with 50% Duty Cycle for Half-Bridge Resonant Converter Topology
  • High Efficiency through Zero Voltage Switching (ZVS)
  • Internal UniFET™s with Fast-Recovery Body Diode
  • Fixed Dead Time (350ns) Optimized for MOSFETs
  • Up to 300kHz Operating Frequency
  • Auto-Restart Operation for All Protections with An External LVCC
  • Protection Functions: Over-Voltage Protection (OVP), Over-Current Protection (OCP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD)


  • PDP TV
  • LCD TV
  • Desktop PC
  • Server
  • Video Game Console


Status Lifetime Package Type SIP-9
Case Outline 127EN MSL Temp (°C) 0
Container Type TUBE

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shipping Shipping And Packing
Shipping Method

Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.

warranty Warranty & Returns

Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.

Ratings and Reviews

Z**y 10/20/2022

It arrived in good condition has not been tested yet.

S**h 03/15/2022

Delivery is fast. Does not adjust voltage or current. The alternators were spinning hard. The switch also does not react. Apparently marriage (((

H**r 10/28/2021

Everything is as always on top, the seller is excellent, not the first time i order it and i advise you!)

S**l 10/09/2021

Very fast shipping. To kemerovo for 14 days. I haven't tried it yet.



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FSFR1700XSL Datasheet PDF

Preliminary Specification FSFR1700XSL PDF Download

FSFR1700XSL PDF Preview

Availability: 7457 PCS

Qty. Unit Price(USD) Ext. Price
1+ $3.433 $3.43
10+ $2.984 $29.84
38+ $2.519 $95.72
95+ $2.250 $213.75
380+ $2.126 $807.88
1140+ $2.070 $2,359.80

The prices below are for reference only.