FSQ0765RS Fairchild Semiconductor, FSQ0765RS Datasheet - Page 6

• Manufacturer Part Number: FSQ0765RS
• Description: A Quasi-Resonant Converter (QRC) generally shows lower EMI and higher power conversion efficiency than a conventional hard-switched converter with a fixed switching frequency
• Manufacturer: Fairchild Semiconductor

FSQ0765RS • Rev. 1.0.2
© 2008 Fairchild Semiconductor Corporation
Electrical Characteristics
T
Note:
10. Propagation delay in the control IC.
A
SENSEFET SECTION
CONTROL SECTION
BURST-MODE SECTION
Symbol
R
t
V
V
BV
V
= 25°C unless otherwise specified.
ON.MAX
V
V
C
V
t
Δf
V
DS(ON)
t
D
I
START
B_HYS
t
d(on)
d(off)
f
t
STOP
t
BURH
DSS
BURL
AVS
I
OSS
t
SW
SW
S/S
OVP
AVS
t
FB
MIN
t
t
W
SW
DSS
B
r
f
Drain Source Breakdown Voltage
Zero-Gate-Voltage Drain Current
Drain-Source On-State Resistance
Output Capacitance
Turn-On Delay Time
Rise Time
Turn-Off Delay Time
Fall Time
Maximum On Time
Blanking Time
Detection Time Window
Initial Switching Frequency
Switching Frequency Variation
AVS Triggering
Threshold
Switching Time Variance by AVS
Feedback Source Current
Minimum Duty Cycle
UVLO Threshold Voltage
Internal Soft-Start Time
Over-Voltage Protection
Burst-Mode Voltages
(11)
Parameter
On Time
Feedback
Voltage
(11)
(11)
V
V
T
V
V
T
T
T
-25°C < T
at V
(AVS triggered when
V
Sync = 500kHz sine input
V
V
V
After turn-on
With free-running frequency
T
J
J
J
J
J
CC
DS
GS
DD
AVS
FB
FB
FB
= 25°C, I
= 25°C
= 25°C, V
= 25°C, V
= 25°C, t
6
IN
= 1.2V, t
= 0V
= 0V
= 520V, V
= 0V, I
= 0V, V
= 325V, I
>spec & t
= 240V
Conditions
J
D
< 85°C
D
PD
DS
sync
sync
ON
= 100µA
DC
= 1.8A
D
AVS
GS
= 200ns
= 25V, f = 1MHz
= 6.5A
= 4.0µs
, Lm = 360μH
= 5V
= 0V
= 0V
<spec.)
(10)
Continued on the following page...
Min. Typ. Max. Units
13.2
59.6
13.5
0.45
0.25
650
700
8.8
18
11
7
10.0
15.0
66.7
17.5
0.55
0.35
125
102
900
200
1.3
6.0
4.0
1.2
27
63
65
±5
12
19
8
1100
16.8
75.8
20.5
0.65
0.45
11.2
www.fairchildsemi.com
300
±10
1.6
13
20
0
9
kHz
mV
ms
µA
µA
pF
ns
ns
ns
ns
µs
µs
µs
µs
µs
%
%
V
Ω
V
V
V
V
V
V