参数资料
型号: TOP256LG
厂商: Power Integrations
文件页数: 18/50页
文件大小: 0K
描述: IC OFFLINE SWIT PROG OVP 7FESIP
标准包装: 48
系列: TOPSwitch®-HX
输出隔离: 隔离
频率范围: 119kHz ~ 145kHz
输出电压: 700V
功率(瓦特): 88W
工作温度: -40°C ~ 150°C
封装/外壳: 7-SIP,6 引线,裸露焊盘,成形引线
供应商设备封装: eSIP-7F
包装: 管件
TOP252-262
Typical Uses of VOLTAGE MONITOR (V) and EXTERNAL CURRENT LIMIT (X) Pins (cont.)
+
V UV = I UV × R LS + V V (I V = I UV )
V OV = I OV × R LS + V V (I V = I oV )
+
V UV = I UV x R LS + V V (I V = I UV )
V OV = I OV x R LS + V V (I V = I oV )
output or can be replaced
by a manual switch.
For R IL = 12 k ?
Q R
DC
Input
Voltage
TOP259-261YN would
use the G pin as the
return for Q R .
-
D
S
R LS 4 M ? DC MAX @100 VDC = 76%
DC MAX @375 VDC = 41%
Q R can be an optocoupler
V
CONTROL
C
I LIMIT = 61%
X
R IL
ON/OFF
16 k ?
PI-4725-011008
DC
Input
Voltage
TOP259-261YN would
use the G pin as the
return for R IL .
-
D
S
R LS 4 M ?
V
CONTROL
X
R IL
12 k ?
For R LS = 4 M ?
V UV = 102.8 VDC
V OV = 451 VDC
DC MAX @ 100 VDC = 76%
DC MAX @ 375 VDC = 41%
C
For R IL = 12 k ?
I LIMIT = 61%
See Figure 55b for
other resistor values
(R IL ) to select different
I LIMIT values.
Figure 26. Active-on Remote ON/OFF with Line-Sense and External
Current Limit.
+
Figure 27. Line Sensing and Externally Set Current Limit.
V UV = I UV × R LS + V V (I V = I UV )
V OV = I OV × R LS + V V (I V = I OV )
DC
Input
Voltage
D
R LS
4 M ?
V
For R LS = 4 M ?
V UV = 102.8 VDC
V OV = 451 VDC
Sense Output Voltage
DC MAX @ 100 VDC = 76%
DC MAX @ 375 VDC = 41%
Reset
10 k ?
Q R
CONTROL
C
-
S
PI-4756-121007
Figure 28. Line-Sensing for Undervoltage, Overvoltage, Line Feed-Forward and
Latched Output Overvoltage Protection with Device Reset.
Typical Uses of MULTI-FUNCTION (M) Pin
+
+
V UV = I UV × R LS + V M (I M = I UV )
V OV = I OV × R LS + V M (I M = I OV )
DC
Input
Voltage
D
S
S
C
S
M
S
DC
Input
Voltage
R LS
4 M ?
For R LS = 4 M ?
V UV = 102.8 VDC
V OV = 451 VDC
DC MAX @ 100 VDC = 76%
DC MAX @ 375 VDC = 41%
D
M
CONTROL
C
D
S
C
D
M
CONTROL
C
-
S
-
S
PI-4727-061207
Figure 29. Three Terminal Operation (MULTI-FUNCTION Features Disabled).
18
Rev. H 06/13
PI-4728-120307
Figure 30. Line Sensing for Undervoltage, Overvoltage and Line Feed-Forward.
www.powerint.com
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