SG6961 查看數據表（PDF） - Fairchild Semiconductor
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SG6961 Datasheet PDF : 14 Pages
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Power Factor Controller
Current Sense Section (VLIMIT)
Symbol Parameter
Threshold Voltage for Peak Current Limit
VPK
Cycle–by-Cycle Limit
TPKD
Propagation Delay
TBNK
Leading-Edge Blanking Time
Product Specification
SG6961
Test Condition
VCOMP=5V
RMOT=24kΩ
Min.
0.77
Typ.
0.82
400
Max.
0.87
200
550
Unit
V
ns
ns
Gate Section
Symbol Parameter
VZ-OUT
VOL
VOH
Output Voltage Maximum (Clamp)
Output Voltage Low
Output Voltage High
TR
Rising Time
TF
Falling Time
Test Condition
VCC=20V
VCC=15V, IO=100mA
VCC=14V, IO=100mA
VCC=12V, CL=3nF,
20~80%
VCC=12V, CL=3nF,
80~20%
Min.
15.5
8
50
Typ.
16.5
80
Max.
17.5
1.4
160
Unit
V
V
V
ns
30
40
70
ns
Zero Current Detection Section
Symbol Parameter
Test Condition
Min.
VZCD
HYS of VZCD
VZCD-HIGH
VZCD-LOW
TDEAD
TRESTART
TINHIB
VDIS
TZCD-DIS
Input Threshold Voltage Rising Edge
VZCD Increasing
1.9
Threshold Voltage Hysteresis
VZCD Decreasing
0.25
Upper Clamp Voltage
IZCD=3mA
8
Lower Clamp Voltage
IZCD=-0.5mA
0
Maximum Delay from ZCD to Output Turn-On
VCOMP=5V, FSW=60KHz 100
Restart Time
Output Turned Off by ZCD 300
Inhibit Time (Maximum Switching Frequency Limit) RMOT=24kΩ
1.5
Disable Threshold
200
ZCD Disable Debounce Time
RMOT=24kΩ, ZCD=100mV 800
Typ.
2.1
0.35
10
500
2.5
250
Max.
2.3
0.50
12
400
700
3.0
300
Unit
V
V
V
V
ns
µs
µs
mV
µs
Maximum On-Time Section
Symbol Parameter
Test Condition
VMOT
TON-MAX
MOT Voltage
Maximum On-Time Programming (Resistor Based) RMOT=24kΩ, VCS=0,
VCOMP=5V
Min.
1.25
21
Typ.
1.30
25
Max. Unit
1.35
V
27
µs
© System General Corp.
Version 1.3.1 (IRO33.0028.B6)
-5-
www.sg.com.tw • www.fairchildsemi.com
September 24, 2007
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