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Fairchild Semiconductor Electronic Components Datasheet

FSFR1700US Datasheet

Power Switch

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May 2010
FSFR-US Series — Fairchild Power Switch (FPS™)
for Half-Bridge Resonant Converters
Features
ƒ Variable Frequency Control with 50% Duty Cycle
for Half-Bridge Resonant Converter Topology
ƒ High Efficiency through Zero Voltage Switching (ZVS)
ƒ Internal UniFET™s with Fast-Recovery Type
Body Diode
ƒ Fixed Dead Time (350ns) Optimized for MOSFETs
ƒ Up to 300kHz Operating Frequency
ƒ Auto-Restart Operation for All Protections with An
External LVCC
ƒ Protection Functions: Over-Voltage Protection
(OVP), Over-Current Protection (OCP), Abnormal
Over-Current Protection (AOCP), Internal Thermal
Shutdown (TSD)
Applications
ƒ PDP and LCD TVs
ƒ Desktop PCs and Servers
ƒ Adapters
ƒ Telecom Power Supplies
Description
The FSFR -US seri es a re a high ly inte grated p ower
switches de signed for high-efficiency ha lf-bridge
resonant co nverters. O ffering ev erything ne cessary to
build a reliable and robust resonant converter, the FSFR-
US seri es si mplifies de signs and improves prod uctivity,
while improv ing perf ormance. T he FSFR -US serie s
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 pr otection fu nctions. T he high- side gat e-drive
circuit has a common-mode noise cancellation capability,
which gu arantees st able o peration w ith ex cellent noise
immunity. The fast-recovery body diode of the MOSFETs
improves rel iability aga inst abn ormal ope ration
conditions, w hile minimizing the e ffect of the rev erse
recovery. U sing th e z ero-voltage-switching ( ZVS)
technique dramatically reduces the switching losses and
efficiency i s significantly i mproved. T he ZVS also
reduces the sw itching no ise noticeably, w hich al lows a
small-sized Electromagnetic Interference (EMI) filter.
The FSFR-US series can be applied to various resonant
converter to pologies such as ser ies re sonant, para llel
resonant, and LLC resonant converters.
Related Resources
AN4151 — H alf-bridge LLC Resonant C onverter D esign
using FSFR-Series Fairchild Power Switch (FPSTM)
Ordering Information
Part Number
Package
Operating
Junction
Temperature
RDS(ON_MAX)
Maximum Output Power
without Heatsink
(VIN=350~400V) (1,2)
FSFR2100US
0.51Ω
180W
FSFR1800US
9-SIP
0.95Ω
120W 260
FSFR1700US
FSFR2100USL
FSFR1800USL
FSFR1700USL
9-SIP
L-Forming
-40 to +130°C
1.25Ω
0.51Ω
0.95Ω
1.25Ω
100W 200
180W 400
120W 260
100W 200
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.
Maximum Output
Power with Heatsink
(VIN=350~400V)(1,2)
400W
W
W
W
W
W
© 2009 Fairchild Semiconductor Corporation
FSFR-US Series • Rev.1.0.2
www.fairchildsemi.com
http://www.Datasheet4U.com


Fairchild Semiconductor Electronic Components Datasheet

FSFR1700US Datasheet

Power Switch

No Preview Available !

Application Circuit Diagram
Figure 1. Typical Application Circuit (LLC Resonant Half-Bridge Converter)
Block Diagram
© 2009 Fairchild Semiconductor Corporation
FSFR-US Series • Rev.1.0.2
Figure 2. Internal Block Diagram
2
www.fairchildsemi.com


Part Number FSFR1700US
Description Power Switch
Maker Fairchild Semiconductor
Total Page 15 Pages
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