Data Sheet

FSQ0765RQ — Green-Mode Farichild Power Switch (FPS™) for Quasi-Resonant Operation
© 2008 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSQ0765RQ Rev. 1.0.1 6
Electrical Characteristics
T
A
= 25°C unless otherwise specified.
Note:
10. Propagation delay in the control IC.
Continued on the following page...
Symbol Parameter Condition Min. Typ. Max. Unit
SENSEFET SECTION
BV
DSS
Drain Source Breakdown Voltage V
CC
= 0V, I
D
= 100µA 650 V
I
DSS
Zero-Gate-Voltage Drain Current V
DS
= 520V, V
GS
= 0V 300 µA
R
DS(ON)
Drain-Source On-State Resistance T
J
= 25°C, I
D
= 1.8A 1.3 1.6 Ω
C
OSS
Output Capacitance V
GS
= 0V, V
DS
= 25V, f = 1MHz 125 pF
t
d(on)
Turn-On Delay Time
V
DD
= 325V, I
D
= 6.5A
27 ns
t
r
Rise Time 102 ns
t
d(off)
Turn-Off Delay Time 63 ns
t
f
Fall Time 65 ns
CONTROL SECTION
t
ON.MAX
Maximum On Time T
J
= 25°C 8.8 10.0 11.2 µs
t
B
Blanking Time T
J
= 25°C, V
sync
= 5V 13.5 15.0 16.5 µs
t
W
Detection Time Window T
J
= 25°C, V
sync
= 0V 6.0 µs
f
S
Initial Switching Frequency 59.6 66.7 75.8 kHz
Δf
S
Switching Frequency Variation
(11)
-25°C < T
J
< 85°C ±5 ±10 %
t
AVS
AVS Triggering
Threshold
(11)
On Time
at V
IN
= 240V
DC
, Lm = 360μH
(AVS triggered when V
AVS
>spec
& t
AVS
<spec.)
4.0 µs
V
AVS
Feedback
Voltage
1.2 V
t
SW
Switching Time Variance by AVS
(11)
Sync = 500kHz sine input
V
FB
= 1.2V, t
ON
= 4.0µs
13.5 20.5 µs
I
FB
Feedback Source Current V
FB
= 0V 700 900 1100 µA
D
MIN
Minimum Duty Cycle V
FB
= 0V 0 %
V
START
UVLO Threshold Voltage
11 12 13 V
V
STOP
After turn-on 7 8 9 V
t
S/S
Internal Soft-Start Time With free-running frequency 17.5 ms
BURST-MODE SECTION
V
BURH
Burst-Mode Voltages T
J
= 25°C, t
PD
= 200ns
(10)
0.45 0.55 0.65 V
V
BURL
0.25 0.35 0.45 V
Hysteresis 200 mV