TOP252-262
多功能（M）引脚的典型使用方法（继上）
+
+
QR can be an optocoupler
output or can be replaced
by a manual switch.
QR can be an optocoupler
output or can be replaced
by a manual switch.
For RIL = 12 k7
ILIMIT = 61%
DC
Input
Voltage
DC
Input
Voltage
For RIL = 19 k7
ILIMIT = 37%
D
S
M
D
S
M
RIL
CONTROL
CONTROL
QR
47 k7
C
C
ON/OFF
QR
ON/OFF
16 k7
-
-
PI-2519-040501
PI-4735-092107
图 38. 用外部设定流限来启动远程开／关（参考M引脚工作描述）
图 37. 启动远程开／关
+
+
QR can be an optocoupler
output or can be replaced
by a manual switch.
VUV = IUV × RLS + VM (IM = IUV
VOV = IOV × RLS + VM (IM = IOV
)
)
For RLS = 4 M7
VUV = 102.8 VDC
VOV = 451 VDC
RLS
4 M7
ON/OFF
DC
Input
QR
DC
Input
Voltage
Sense Output Voltage
7 k7
DCMAX @ 100 VDC = 76%
DCMAX @ 375 VDC = 41%
Voltage
RMC
24 k7
RMC = 2RIL
D
S
M
D
M
10 k7
CONTROL
CONTROL
Reset
C
RIL
C
QR
12 k7
S
-
-
PI-4757-120307
PI-4736-060607
图 39. 用外部设定流限来关闭远程开／关（参考M引脚工作描述）
图 40. 实现欠压、过压、线电压前馈及输出过压锁存保护的线电压检测，
带器件复位电路
20
版本D 08/08
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POWERINT [ Power Integrations ]
