参数资料
型号: FAN6791MY
厂商: Fairchild Semiconductor
文件页数: 9/20页
文件大小: 0K
描述: IC REG CTRLR FLYBK ISO CM 16SOIC
标准包装: 2,500
PWM 型: 电流模式
输出数: 2
频率 - 最大: 130kHz
占空比: 49%
电源电压: 10 V ~ 22 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
Electrical Characteristics
V DD =18V; R I =24k ? ;T A =25°C, unless noted.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
ON/OFF
R ON/OFF
Impedance ON/OFF Pin
50
100
k ?
V ON
V OFF
High Threshold Level of
Synchronizing Signal
Low Threshold Level of
Synchronizing Signal
2.4
0.8
3.0
1.0
3.6
1.2
V
V
Over Temperature Protection (OTP)
Temperature
T Off
Protection Junction
(1)
130
140
+150
°C
T Restart
Restart Junction Temperature
(2)
100
110
+120
°C
Flyback PWM Stage
FBFYB Feedback Input
A V-FLY
Z FB
FB Input to Current Comparator
Attenuation
Input Impedance
1/3.75
4
1/3.20
5
1/2.75
7
V/V
k ?
V HGH
Output High Voltage
FB Pin Open
5.0
5.2
V
V FB-OLP
t OLP
V N
S G
V G
V OZ-OFYB
FB Open-Loop Trigger Level
FB Open-Loop Protection Delay
Green Mode Entry FB Voltage
Slope of Green-Mode Modulation
Green Mode Ending FB Voltage
V FBPWM for Zero Duty
Cycle(Forward Turn On)
4.2
53
2.4
60
1.8
1.2
4.5
56
2.5
75
1.9
1.3
4.8
59
2.6
90
2.0
1.4
V
ms
V
Hz/mV
V
V
IFYB Current Sense
Z CS
Input Impedance
12
k ?
V LIMIT1
V LIMIT2
t PD
t BNK
Δ V SLOPE
V S-SCP
t D-SSCP
Peak Current Limit Threshold
Voltage 1
Peak Current Limit Threshold
Voltage 2
Propagation Delay to GATE
Output
Leading-Edge Blanking Time
Slope Compensation
Threshold Voltage for SENSE
Short-Circuit Protection
Delay Time for SENSE Short-
Circuit Protection
V RMS =1V
V RMS =1.5V
V DD =15V, OFYB Drops
to 9V
Duty=DCY MAX
V SENSE <0.15V,
R I =24K ?
0.75
60
200
0.34
0.1
100
0.80
V LIMIT1 -0.1
270
0.37
0.15
180
0.85
120
350
0.41
0.2
240
V
V
ns
ns
V
V
μs
OFYB-GATE Driver
V OFYB-CLAMP
Flyback PWM Gate Output
Clamping Voltage
V DD =22V
16
18
V
V OL-OFYB
V OH-OFYB
Output Voltage Low
Output Voltage High
V DD =15V; I O =20mA
V DD =12V; I O =20mA
8
1.5
V
V
t R-OFYB
t F-OFYB
Rising Time
Falling Time
V DD =15V; Gate=1nF;
Gate=2~9V
V DD =15V; Gate=1nF;
Gate=9~2V
30
30
60
50
120
90
ns
ns
? 2008 Fairchild Semiconductor Corporation
FAN6791 / FAN6793 ? Rev. 1.0.3
9
www.fairchildsemi.com
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