FSFR1700HS Datasheet, PDF (1/15 Pages) Fairchild Semiconductor – FSFR-HS Series — Advanced Fairchild Power Switch(FPS™)

August 2011
FSFR-HS Series — Advanced Fairchild Power Switch
(FPS™) for Half-Bridge Resonant Converters
Features
 Variable Frequency Control with 50% Duty Cycle
for Half-Bridge Resonant Converter Topology
 High Efficiency through Zero Voltage Switching (ZVS)
 Built-in High-Side Gate Driver IC
 Internal UniFET™s with Fast-Recovery Type Body
Diode (t_rr=160ns Typical)
 Fixed Dead Time (350ns) Optimized for MOSFETs
 Operating Frequency Up to 600kHz for Soft-Start
 Self Auto-Restart Operation for All Protections, Despite
External LV_CC Bias
 Line UVLO with Programmable Hysteresis Level
 Simple On/Off with Line UVLO Pin
 Easy Configuration and Compatibility with FAN7930 for
Line UVLO without External Components
 Protection Functions: Over-Voltage Protection (OVP),
Over-Current Protection (OCP), Abnormal Over-
Current Protection (AOCP), Internal Thermal
Shutdown (TSD)
Applications
 PDP and LCD TVs
 Desktop PCs and Servers
 Adapters
 Telecom Power Supplies
Description
The FSFR-HS 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 FSFR-HS
simplifies designs while improving productivity and
performance. The FSFR-HS combines power MOSFETs,
a high-side gate-drive circuit, an accurate current-
controlled oscillator, and built-in protection functions.
The high-side gate-drive circuit has a common-mode
noise cancellation capability, which provides stable
operation with excellent noise immunity. Using zero-
voltage-switching (ZVS) technique dramatically reduces
the switching losses and significantly improves efficiency.
The ZVS also reduces the switching noise noticeably,
even though the operating frequency increases. It allows
a small Electromagnetic Interference (EMI) filter, besides
the high operating frequency, to reduce the volume of the
resonant tank and to increase power density.
The FSFR-HS can be applied to 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™)
Ordering Information
Part Number
FSFR1800HS
FSFR1800HSL
FSFR1700HS
FSFR1700HSL
Package
9-SIP
9-SIP
L-Forming
9-SIP
9-SIP
L-Forming
Operating
Maximum Output Power Maximum Output
Junction R_{DS(ON_MAX)}
Temperature
without Heatsink
(V_IN=350~400V)^(1,2)
Power with Heatsink
(V_IN=350~400V)^(1,2)
-40 to +130°C 0.95Ω
120W
260W
-40 to +130°C 1.25Ω
100W
200W
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.
© 2011 Fairchild Semiconductor Corporation
FSFR1800 / FSFR1700-HS • Rev.1.0.0
www.fairchildsemi.com