Product Summary

The FSFR1700 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 device 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 applications of the FSFR1700 include: PDP and LCD TVs, Desktop PCs and servers, Adapters, Telecom Power Supplies, Audio Power Supplies.

Parametrics

FSFR1700 absolute maximum ratings: (1)VDS Maximum Drain-to-Source Voltage(VDL-VCTR and VCTR-PG): 500V; (2)LVCC Low-side Supply Voltage: min=-0.3V, max=25.0V; (3)HVCC to VCTR High-side VCC Pin to Low-side Drain Voltage: min=-0.3V, max=25.0V; (4)HVCC High-side Floating Supply Voltage: min=-0.3V, max=525V; (5)VCON Control Pin Input Voltage: min=-0.3V, max=LVCC V; (6)VCS Current Sense (CS) Pin Input Voltage: min=-5.0V, max=1.0V; (7)VRT RT Pin Input Voltage: min=-0.3V, max=5.0V.

Features

FSFR1700 features: (1)Variable Frequency Control with 50% Duty Cycle for Half-bridge Resonant Converter Topology; (2)High Efficiency through Zero Voltage Switching (ZVS); (3)Internal SuperFETs with Fast-Recovery Type Body Diode (trr=120ns) for FSFR2100 and UniFETs with Fast-Recovery Type Body Diode (trr<160ns) for FSFR2000/1900/1800/1700.; (4)Fixed Dead Time (350ns) Optimized for MOSFETs; (5)Up to 300kHz Operating Frequency; (6)Pulse Skipping for Frequency Limit (Programmable) at Light-Load Condition.

Diagrams

FSFR1700 block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
FSFR1700
FSFR1700
Fairchild Semiconductor
Switching Converters, Regulators & Controllers Power Switch for Half-Bridge Resonant
Data Sheet
0-1: $2.83
1-25: $2.42
25-100: $2.20
100-250: $1.99
FSFR1700HS
FSFR1700HS
Fairchild Semiconductor
Power Driver ICs HI POWER FPS
Data Sheet
0-1: $2.04
1-25: $1.63
25-100: $1.27
100-250: $1.21
FSFR1700HSL
FSFR1700HSL
Fairchild Semiconductor
Power Driver ICs HI POWER FPS
Data Sheet
0-1: $2.16
1-25: $1.73
25-100: $1.34
100-250: $1.28
FSFR1700USL
FSFR1700USL
Fairchild Semiconductor
Switching Converters, Regulators & Controllers 200W Powr Switch for Half Brdg Res Cnvtr
Data Sheet
0-1: $2.32
1-25: $2.06
25-100: $1.69
100-250: $1.53
FSFR1700US
FSFR1700US
Fairchild Semiconductor
Switching Converters, Regulators & Controllers HIGH POWER FPS
Data Sheet
0-235: $1.61
235-250: $1.45
250-500: $1.31
500-1000: $1.10
FSFR1700L
FSFR1700L
Fairchild Semiconductor
Switching Converters, Regulators & Controllers Pwr Switch for Half- Brdg Resonant Cnvrtr
Data Sheet
0-190: $1.85
190-250: $1.67
250-500: $1.51
500-1000: $1.27
FSFR1700XS
FSFR1700XS
Fairchild Semiconductor
Switching Converters, Regulators & Controllers 200W Power Switch
Data Sheet
0-1: $1.73
1-25: $1.25
25-100: $1.11
100-250: $1.00
FSFR1700XSL
FSFR1700XSL
Fairchild Semiconductor
Switching Converters, Regulators & Controllers 200W Fairchild PwrSW
Data Sheet
0-1: $2.18
1-25: $1.76
25-100: $1.60
100-250: $1.44