Harman Kardon MAS 101 Service Manual page 18

FSFR-Series —
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)
Internal SuperFET™s with Fast-Recovery Type
Body Diode (t =120ns) for FSFR2100 and UniFETs
rr
with Fast-Recovery Type Body Diode (t
FSFR2100U/2000/1900/1800/1700.
Fixed Dead Time (350ns) 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)
Applications
PDP and LCD TVs
Desktop PCs and Servers
Adapters
Telecom Power Supplies
Audio Power Supplies
Ordering Information
Part
Package
Number
FSFR2100
FSFR2100U
FSFR2000
9-SIP
FSFR1900
FSFR1800
FSFR1700
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.
For Fairchild's definition of Eco Status, please visit:
© 2007 Fairchild Semiconductor Corporation
FSFR series • Rev.1.0.5
Fairchild Power Switch (FPS™)
<160ns) for
rr
Operating
Eco
Junction R
DS(ON_MAX)
Status
Temperature
RoHS -40 to +130°C
Description
The FSFR-series are a highly integrated power switches
designed for high-efficiency
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
controlled oscillator, frequency limit circuit, soft-start, and
built-in protection functions. The high-side gate-drive
circuit has a common-mode
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
AN4151 — Half-bridge LLC Resonant Converter Design
using FSFR-series Fairchild Power Switch (FPS
Maximum Output Power
without Heatsink
(V =350~400V)
IN
200W
0.38Ω
0.51Ω 180W
0.67Ω 160W
0.85Ω 140W
120W
0.95Ω
100W
1.25Ω
http://www.fairchildsemi.com/company/green/rohs_green.html
16
April 2009
half-bridge resonant
circuit, an accurate current
noise cancellation
TM
)
Maximum Output Power
with Heatsink
(1,2) (1,2)
(V =350~400V)
IN
450W
400W
350W
300W
260W
200W
.
www.fairchildsemi.com