参数资料
型号: TOP256GN-TL
厂商: Power Integrations
文件页数: 19/50页
文件大小: 0K
描述: IC OFFLINE SWIT PROG OVP 8SMD
产品培训模块: TOPSwitch® HX General Introduction
标准包装: 1
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): 63W
工作温度: -40°C ~ 150°C
封装/外壳: 8-SMD(7 个接脚),鸥形翼
供应商设备封装: SMD-8C
包装: 标准包装
配用: 596-1193-ND - KIT REF DESIGN TOP HX FOR TOP258
其它名称: 596-1182-6
TOP252-262
Typical Uses of MULTI-FUNCTION (M) Pin (cont.)
R OVP >3k ?
+
DC
Input
Voltage
D
R LS 4 M ?
M
CONTROL
V UV = I UV × R LS + V M (I M = I UV )
V OV = I OV × R LS + V M (I M = I OV )
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%
C
+
DC
Input
Voltage
D
R LS 4 M ?
VR OVP
M
CONTROL
V UV = I UV × R LS + V M (I M = I UV )
V OV = I OV × R LS + V M (I M = I OV )
For R LS = 4 M ?
V UV = 102.8 VDC
V OV = 451 VDC
Sense Output Voltage
R OVP
DC MAX @ 100 VDC = 76%
DC MAX @ 375 VDC = 41%
C
-
S
-
S
PI-4729-120307
Figure 31. Line Sensing for Undervoltage, Overvoltage, Line Feed-Forward and
Latched Output Overvoltage Protection.
PI-4730-120307
Figure 32. Line Sensing for Undervoltage, Overvoltage, Line Feed-Forward and
Hysteretic Output Overvoltage Protection.
+
V UV = R LS × I UV + V M (I M = I UV )
+
V OV = I OV × R LS + V M (I M = I OV )
4 M ?
For Values Shown
V UV = 103.8 VDC
R LS
R LS
4 M ?
For Values Shown
V OV = 457.2 VDC
DC
Input
Voltage
D
40 k ?
M
DC
Input
Voltage
D
55 k ?
M
1N4148
-
6.2 V
S
CONTROL
C
-
S
CONTROL
C
PI-4731-120307
Figure 33. Line Sensing for Undervoltage Only (Overvoltage Disabled).
PI-4732-120307
Figure 34. Line Sensing for Overvoltage Only (Undervoltage Disabled). Maximum
Duty Cycle Reduced at Low Line and Further Reduction with
Increasing Line Voltage.
+
For R IL = 12 k ?
I LIMIT = 61%
For R IL = 19 k ?
I LIMIT = 37%
+
R LS
2.5 M ?
I LIMIT = 100% @ 100 VDC
I LIMIT = 53% @ 300 VDC
DC
Input
Voltage
D
M
See Figures 55b for other
resistor values (R IL ) to
select different I LIMIT values.
DC
Input
Voltage
D
M
R IL
CONTROL
C
R IL
6 k ?
CONTROL
C
-
S
-
S
PI-4733-021308
Figure 35. Externally Set Current Limit (Not Normally Required – See M Pin
Operation Description).
www.powerint.com
PI-4734-092107
Figure 36. Current Limit Reduction with Line Voltage (Not Normally Required –
See M Pin Operation Description).
19
Rev. H 06/13
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