FSFR2100USL.pdf 데이터시트 (총 15 페이지) - 파일 다운로드 FSFR2100USL 데이타시트 다운로드

No Preview Available !

May 2010
FSFR-US 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
ƒ Fixed Dead Time (350ns) Optimized for MOSFETs
ƒ Up to 300kHz Operating Frequency
ƒ Auto-Restart Operation for All Protections with An
External LVCC
ƒ Protection Functions: Over-Voltage Protection
(OVP), 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
Description
The FSFR -US seri es a re a high ly inte grated p ower
switches de signed for high-efficiency ha lf-bridge
resonant co nverters. O ffering ev erything ne cessary to
build a reliable and robust resonant converter, the FSFR-
US seri es si mplifies de signs and improves prod uctivity,
while improv ing perf ormance. T he FSFR -US serie s
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 pr otection fu nctions. T he high- side gat e-drive
circuit has a common-mode noise cancellation capability,
which gu arantees st able o peration w ith ex cellent noise
immunity. The fast-recovery body diode of the MOSFETs
improves rel iability aga inst abn ormal ope ration
conditions, w hile minimizing the e ffect of the rev erse
recovery. U sing th e z ero-voltage-switching ( ZVS)
technique dramatically reduces the switching losses and
efficiency i s significantly i mproved. T he ZVS also
reduces the sw itching no ise noticeably, w hich al lows a
small-sized Electromagnetic Interference (EMI) filter.
The FSFR-US series can be applied to various resonant
converter to pologies such as ser ies re sonant, para llel
resonant, and LLC resonant converters.
Related Resources
AN4151 — H alf-bridge LLC Resonant C onverter D esign
using FSFR-Series Fairchild Power Switch (FPSTM)
Ordering Information
Part Number
Package
Operating
Junction
Temperature
RDS(ON_MAX)
Maximum Output Power
without Heatsink
(VIN=350~400V) (1,2)
FSFR2100US
0.51Ω
180W
FSFR1800US
9-SIP
0.95Ω
120W 260
FSFR1700US
FSFR2100USL
FSFR1800USL
FSFR1700USL
9-SIP
L-Forming
-40 to +130°C
1.25Ω
0.51Ω
0.95Ω
1.25Ω
100W 200
180W 400
120W 260
100W 200
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.
Maximum Output
Power with Heatsink
(VIN=350~400V)(1,2)
400W
W
W
W
W
W
© 2009 Fairchild Semiconductor Corporation
FSFR-US Series • Rev.1.0.2
www.fairchildsemi.com
http://www.Datasheet4U.com

No Preview Available !

Application Circuit Diagram
Figure 1. Typical Application Circuit (LLC Resonant Half-Bridge Converter)
Block Diagram
© 2009 Fairchild Semiconductor Corporation
FSFR-US Series • Rev.1.0.2
Figure 2. Internal Block Diagram
2
www.fairchildsemi.com

No Preview Available !

Pin Configuration
Figure 3. Package Diagram
Pin Definitions
Pin #
1
Name
VDL
2 AR
3
4C
5
6
7 LV
8N
9H
10 V
RT
S
SG
PG
CC
C
VCC
CTR
Description
This is the drain of the high-side MOSFET, typically connected to the input DC link voltage.
This pin is for discharging the external soft-start capacitor when any protections are
triggered. When the voltage of this pin drops to 0.2, all protections are reset and the
controller starts to operate again.
This pin programs the switching frequency. Typically, an opto-coupler is connected to control
the switching frequency for the output voltage regulation.
This pin senses the current flowing through the low-side MOSFET. Typically, negative
voltage is applied on this pin.
This pin is the control ground.
This pin is the power ground. This pin is connected to the source of the low-side MOSFET.
This pin is the supply voltage of the control IC.
No connection.
This is the supply voltage of the high-side gate-drive circuit IC.
This is the drain of the low-side MOSFET. Typically, a transformer is connected to this pin.
© 2009 Fairchild Semiconductor Corporation
FSFR-US Series • Rev.1.0.2
3
www.fairchildsemi.com