FSFR2100 Datasheet, PDF (1/16 Pages) Fairchild Semiconductor – Fairchild Power Switch (FPS™) for Half-Bridge Resonant Converter

October 2007
FSFR-Series / FSFR2100
Fairchild Power Switch (FPS^™) for Half-Bridge
Resonant Converter
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 Super-FETs with Fast-Recovery Type Body
Diode (trr=120ns)
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), Overload Protection (OLP), Over-Current
Protection (OCP), Abnormal Over-Current Protection
(AOCP), Internal Thermal Shutdown (TSD)
Applications
ƒ PDP TV and LCD TV
ƒ Desktop PC and Server
ƒ Adapter
ƒ Telecom Power
ƒ Audio Power
Description
FSFR-series is a highly integrated power switch family
specially 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 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
the efficiency is significantly improved. The ZVS also
reduces the switching noise noticeably, which allows a
small-sized 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
AN4151 — Half-bridge LLC Resonant Converter Design
using FSFR-series Fairchild Power Switch (FPS^TM)
Ordering Information
Part
Number
Package
Operating
Temperature
R_{DS(ON_MAX)}
FSFR2100
FSFR2000⁽³⁾
FSFR1900⁽³⁾
FSFR1800⁽³⁾
9-SIP
9-SIP
9-SIP
9-SIP
-40 to +85°C
-40 to +85°C
-40 to +85°C
-40 to +85 ºC
0.38Ω
0.67Ω
0.85Ω
0.95Ω
Maximum Output Power
without Heatsink
(V_IN=350~400V) ^(1,2)
200W
160W
140W
120W
Maximum Output
Power with Heatsink
(V_IN=350~400V)^(1,2)
450W
350W
300W
260W
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.
3. Preliminary part design. Contact a Fairchild representative for availability.
All packages are lead free per JEDEC: J-STD-020B standard.
© 2007 Fairchild Semiconductor Corporation
FSFR2100 • 1.0.0
www.fairchildsemi.com