Data Sheet

© 2011 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSFR1800 / FSFR1700-HS • Rev.1.0.1 5
FSFR-HS Series — Advanced Fairchild Power Switch (FPS™) for Half-Bridge Resonant Converter
Electrical Characteristics
T
A
=25°C, LV
CC
, HV
CC
=17 V
DC
and R
T
=26 kΩ unless otherwise specified.
Symbol Parameter Conditions Min. Typ. Max. Unit
MOSFET Section
BV
DSS
Drain-to-Source Breakdown Voltage
I
D
=200 μA, T
A
=25°C 500
V
I
D
=200 μA, T
A
=125°C 540
R
DS(ON)
On-State Resistance
FSFR1800HS/L V
GS
=10 V, I
D
=3.0 A 0.77 0.95
Ω
FSFR1700HS/L V
GS
=10 V, I
D
=2.0 A 1.00 1.25
t
rr
Body Diode Reverse
Recovery Time
(7)
FSFR1800HS/L
V
GS
=0 V, I
DIODE
=7.0 A,
dI
DIODE
/dt=100 A/μs
160
ns
FSFR1700HS/L
V
GS
=0 V, I
DIODE
=6.0 A,
dI
DIODE
/dt=100 A/μs
160
C
ISS
Input Capacitance
(7)
FSFR1800HS/L
V
DS
=25 V, V
GS
=0 V,
f=1.0 MHz
639 pF
FSFR1700HS/L 512 pF
C
OSS
Output Capacitance
(7)
FSFR1800HS/L 82.1 pF
FSFR1700HS/L 66.5 pF
Supply Section
I
LK
Offset Supply Leakage Current
HV
CC
=V
CTR
=500 V
50 μA
I
Q
HV
CC
Quiescent HV
CC
Supply Current (HV
CC
UV+) - 0.1 V
50 120 μA
I
Q
LV
CC
Quiescent LV
CC
Supply Current (LV
CC
UV+) - 0.1 V
100 200 μA
I
O
HV
CC
Operating HV
CC
Supply Current (RMS Value)
f
OSC
=50 KHz
6 9 mA
No Switching 100 200 μA
I
O
LV
CC
Operating LV
CC
Supply Current (RMS Value)
f
OSC
=50 KHz
7 11 mA
No Switching 2 4 mA
UVLO Section
LV
CC
UV+ LV
CC
Supply Under-Voltage Positive Going Threshold (LV
CC,START
) 11.2 12.5 13.8 V
LV
CC
UV- LV
CC
Supply Under-Voltage Negative Going Threshold (LV
CC,STOP
) 8.9 10.0 11.1 V
LV
CC
UVH LV
CC
Supply Under-Voltage Hysteresis 2.5 V
HV
CC
UV+ HV
CC
Supply Under-Voltage Positive Going Threshold (HV
CC,START
) 8.2 9.2 10.2 V
HV
CC
UV-
HV
CC
Supply Under-Voltage Negative Going Threshold (HV
CC,STOP
)
7.8 8.7 9.6 V
HV
CC
UVH HV
CC
Supply Under-Voltage Hysteresis 0.5 V
Oscillator & Feedback Section
V
RT
Output Voltage on RT Pin
R
T
=26 kΩ
1.5 2.0 2.5 V
f
OSC
Output Oscillation Frequency 47 50 53 kHz
DC Output Duty Cycle 48 50 52 %
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