Power Switch. FSFR1800L Datasheet

FSFR1800L Switch. Datasheet pdf. Equivalent

Part FSFR1800L
Description Power Switch
Feature FSFR-Series — Fairchild Power Switch (FPS™) for Half-Bridge Resonant Converter June 2010 FSFR-Seri.
Manufacture Fairchild Semiconductor
Datasheet
Download FSFR1800L Datasheet



FSFR1800L
June 2010
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 UniFET™s with Fast-Recovery Type Body
Diode (trr<160ns).
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 include 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 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 gate-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
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
AN-4151 — Half-Bridge LLC Resonant Converter Design
Using FSFR-Series Fairchild Power Switch (FPS)
Ordering Information
Part
Number
Package
Operating
Junction
RDS(ON_MAX)
Temperature
Maximum Output Power
without Heatsink
(VIN=350~400V) (1,2)
FSFR2100U
0.51Ω
180W
FSFR2000
0.67Ω
160W
FSFR1900
FSFR1800
9-SIP
0.85Ω
0.95Ω
140W
120W
FSFR1700
-40 to +130°C
1.25Ω
100W
FSFR1600
1.55Ω
80W
FSFR1800L
0.95Ω
120W
FSFR1700L 9-SIP(L-Forming)
1.25Ω
100W
FSFR1600L
1.55Ω
80W
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.
© 2007 Fairchild Semiconductor Corporation
FSFR series Rev.1.0.9
Maximum Output
Power with Heatsink
(VIN=350~400V)(1,2)
400W
350W
300W
260W
200W
160W
260W
200W
160W
www.fairchildsemi.com



FSFR1800L
Application Circuit Diagram
VCC
LVcc
RT
Cr
Llk Np
VDL
Lm
HVCC
CDL
VIN
CON Control
IC
CS
SG
VCTR
PG
D1
Ns
Vo
Ns
D2
KA431
CF RF
Rsense
Figure 1. Typical Application Circuit (LLC Resonant Half-Bridge Converter)
Block Diagram
1.5μ s
Figure 2. Internal Block Diagram
© 2007 Fairchild Semiconductor Corporation
FSFR series Rev.1.0.9
2
www.fairchildsemi.com





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