FSFR2100U_10 Datasheet, PDF (1/18 Pages) Fairchild Semiconductor – Fairchild Power Switch (FPS) for Half-Bridge Resonant Converters

June 2010
FSFR-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 (trr<160ns).
ƒ Fixed Dead Time (350ns) Optimized for MOSFETs
ƒ Up to 300kHz Operating Frequency
ƒ Pulse Skipping for Frequency Limit (Programmable)
at Light-Load Condition
ƒ Remote On/Off Control Using Control Pin
ƒ Protection Functions: Over-Voltage Protection
(OVP), Over-Load Protection (OLP), 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
ƒ Audio Power Supplies
Description
The FSFR-series include 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-
series simplifies designs and improves productivity, while
improving performance. The FSFR-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 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
small-sized Electromagnetic Interference (EMI) filter.
The FSFR-series can be applied to various resonant
converter topologies, such as: series resonant, parallel
resonant, and LLC resonant converters.
Related Resources
AN-4151 — Half-Bridge LLC Resonant Converter Design
Using FSFR-Series Fairchild Power Switch (FPS^™)
Ordering Information
Part
Number
Package
Operating
Junction RDS(ON_MAX)
Temperature
Maximum Output Power
without Heatsink
(VIN=350~400V) ^(1,2)
FSFR2100U
0.51Ω
180W
FSFR2000
0.67Ω
160W
FSFR1900
FSFR1800
9-SIP
0.85Ω
0.95Ω
140W
120W
FSFR1700
-40 to +130°C
1.25Ω
100W
FSFR1600
1.55Ω
80W
FSFR1800L
0.95Ω
120W
FSFR1700L 9-SIP(L-Forming)
1.25Ω
100W
FSFR1600L
1.55Ω
80W
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.
© 2007 Fairchild Semiconductor Corporation
FSFR series Rev.1.0.9
Maximum Output
Power with Heatsink
(VIN=350~400V)^(1,2)
400W
350W
300W
260W
200W
160W
260W
200W
160W
www.fairchildsemi.com