MAS 101-102-111 - Harman Kardon Audio Service Manual (repair manual). Page 18

Read Harman Kardon MAS 101-102-111 Service Manual online

April 2009 
© 2007 Fairchild Semiconductor Corporation  
 
www.fairchildsemi.com 
FSFR series  •  Rev.1.0.5 
F
S
F
R
-Series — F
a
irch
ild
 Po
wer Switch
 (F
PS
) for
 H
a
lf-B
ri
dge R
esonant C
onver
ter
 
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 SuperFET™s with Fast-Recovery Type 
Body Diode (t
rr
=120ns) for FSFR2100 and UniFETs 
with Fast-Recovery Type Body Diode (t
rr
<160ns) for 
FSFR2100U/2000/1900/1800/1700. 
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 are a 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 improv es  productivity,  while 
improving  performance. T he  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. T he  high-side  gate-drive 
circuit  has  a common-mode noise cancellation 
capability,  which  guarantees  stable operation w ith 
excellent  noise immunity .  The  fast-recovery  body  diode 
of  the M OSFETs  improves  reliability  against  abnormal 
operation  conditions, w hile  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
TM
Ordering Information  
Part 
Number 
Package 
 
Eco 
Status
 
Operating 
Junction 
Temperature 
R
DS(ON_MAX)
 
Maximum Output Power 
without Heatsink 
(V
IN
=350~400V)
 (1,2)
 
Maximum Output Power 
with Heatsink 
(V
IN
=350~400V)
(1,2)
 
FSFR2100 
0.38Ω 
200W 
450W 
FSFR2100U 
0.51Ω 
180W 
400W 
FSFR2000 
0.67Ω 
160W 
350W 
FSFR1900 
0.85Ω 
140W 
300W 
FSFR1800 
0.95Ω 
120W 
260W 
FSFR1700 
9-SIP 
RoHS 
-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. 
 For Fairchild’s definition of Eco Status, please visit: 
http://www.fairchildsemi.com/company/green/rohs_green.html
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