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February 2013
FSFR2100 — Fairchild Power Switch (FPS?)
for Half-Bridge Resonant Converters
Features
Description
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Variable Frequency Control with 50% Duty Cycle
for Half-bridge Resonant Converter Topology
High Efficiency through Zero Voltage Switching (ZVS)
Internal SuperFET?s with Fast-Recovery Type
Body Diode (t rr =120 ns)
Fixed Dead Time (350 ns) Optimized for MOSFETs
Up to 300kHz Operating Frequency
Pulse Skipping for Frequency Limit (Programmable)
at Light-Load Condition
Remote On/Off Control Using Control Pin
Protection Functions: Over-Voltage Protection
(OVP), Over-Load Protection (OLP), Over-Current
Protection (OCP), Abnormal Over-Current Protection
(AOCP), Internal Thermal Shutdown (TSD)
The FSFR2100 is a highly integrated power switch
designed for high-efficiency half-bridge resonant
converters. Offering everything necessary to build a
reliable and robust resonant converter, the FSFR2100
simplifies designs and improves productivity, while
improving performance. The FSFR2100 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
a 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 the reverse
recovery. Using the zero-voltage-switching (ZVS)
technique dramatically reduces the switching losses and
efficiency is significantly improved. The ZVS also
reduces the switching noise noticeably, which allows a
Applications
small-sized Electromagnetic Interference (EMI) filter.
The FSFR2100 can be applied to various resonant
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PDP and LCD TVs
Desktop PCs and Servers
Adapters
converter topologies, such as: series resonant, parallel
resonant, and LLC resonant converters.
Related Resources
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Telecom Power Supplies
Audio Power Supplies
Ordering Information
Part
Number
FSFR2100
Package
9-SIP
Operating
Junction
Temperature
-40 to +130°C
RDS (ON_MAX)
0.38 ?
Maximum Output Power
without Heatsink
(V IN =350~400 V) (1,2)
200 W
Maximum Output
Power with Heatsink
(V IN =350~400 V) (1,2)
450 W
Notes:
1. The junction temperature can limit the maximum output power.
2. Maximum practical continuous power in an open-frame design at 50 ? C ambient.
? 2010 Fairchild Semiconductor Corporation
FSFR2100 ? Rev.1.1.0
www.fairchildsemi.com
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