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TOP259EN 数据表(PDF) 18 Page - Power Integrations, Inc.

部件名 TOP259EN
功能描述  Enhanced EcoSmart, Integrated Off-Line Switcher with Advanced Feature Set and Extended Power Range
PDF  49 Pages
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制造商  POWERINT [Power Integrations, Inc.]
网页  http://www.powerint.com
标志 POWERINT - Power Integrations, Inc.

TOP259EN 数据表(HTML) 18 Page - Power Integrations, Inc.

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Rev. F 01/09
18
TOP252-262
www.powerint.com
Typical Uses of VOLTAGE MONITOR (V) and EXTERNAL CURRENT LIMIT (X) Pins (cont.)
PI-4727-061207
DC
Input
Voltage
+
-
D
S
C
CONTROL
M
D
SS
S
DS
C
S
C
M
PI-4728-120307
DC
Input
Voltage
+
-
DM
S
C
V
UV = IUV × RLS +VM (IM = IUV)
V
OV =IOV ×RLS +VM (IM = IOV)
For R
LS = 4 M
V
UV = 102.8 VDC
V
OV = 451 VDC
DC
MAX @ 100 VDC = 76%
DC
MAX @ 375 VDC = 41%
CONTROL
R
LS
4 M
Figure 29. Three Terminal Operation (MULTI-FUNCTION Features Disabled).
Figure 30. Line Sensing for Undervoltage, Overvoltage and Line Feed-Forward.
Figure 28. Line-Sensing for Undervoltage, Overvoltage, Line Feed-Forward and
Latched Output Overvoltage Protection with Device Reset.
PI-4756-121007
DC
Input
Voltage
Sense Output Voltage
+
-
DV
S
C
V
UV = IUV × RLS +VV (IV = IUV)
V
OV =IOV ×RLS +VV (IV = IOV)
For R
LS = 4 M
V
UV = 102.8 VDC
V
OV = 451 VDC
DC
MAX @ 100 VDC = 76%
DC
MAX @ 375 VDC = 41%
CONTROL
R
LS
4 M
10 k
Reset
Q
R
Typical Uses of MULTI-FUNCTION (M) Pin
X
ON/OFF
16 k
PI-4725-011008
DC
Input
Voltage
+
-
D
S
C
CONTROL
V
R
IL
R
LS
Q
R
4 M
V
UV = IUV × RLS +VV (IV = IUV)
V
OV =IOV ×RLS +VV (IV = IoV)
DC
MAX@100 VDC = 76%
DC
MAX@375 VDC = 41%
12 k
For R
IL =
I
LIMIT = 61%
Q
R can be an optocoupler
output or can be replaced
by a manual switch.
TOP259-261YN would
use the G pin as the
return for Q
R.
X
DC
Input
Voltage
+
-
D
S
C
CONTROL
V
R
IL
R
LS
12 k
4 M
V
UV = IUV x RLS +VV (IV = IUV)
V
OV =IOV xRLS +VV (IV = IoV)
For R
LS =4M
DC
MAX @ 100 VDC = 76%
DC
MAX @ 375 VDC = 41%
For R
IL = 12 k
I
LIMIT = 61%
See Figure 55b for
other resistor values
(R
IL) to select different
I
LIMIT values.
V
UV = 102.8 VDC
V
OV = 451 VDC
TOP259-261YN would
use the G pin as the
return for R
IL.
Figure 26. Active-on Remote ON/OFF with Line-Sense and External
Current Limit.
Figure 27. Line Sensing and Externally Set Current Limit.



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