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T0P244R Просмотр технического описания (PDF) - Power Integrations, Inc

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T0P244R TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher Power-Integrations
Power Integrations, Inc Power-Integrations
T0P244R Datasheet PDF : 52 Pages
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TOP242-250
Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins (cont.)
+
DC
Input
Voltage
-
VUV = IUV x RLS
VOV = IOV x RLS
RLS 2 MFor RLS = 2 M
VUV = 100 VDC
VOV = 450 VDC
D
L
DCMAX@100 VDC = 78%
CONTROL DCMAX@375 VDC = 38%
C
S
X
For RIL = 12 k
ILIMIT = 69%
RIL
12 k
See Figure 54b for
other resistor values
(RIL) to select different
ILIMIT values
Figure 28. Line-Sensing and Externally Set Current Limit.
+
QR can be an optocoupler
output or can be replaced by
a manual switch.
DC
Input
Voltage
D
L 300 k
CONTROL
C
S
-
Figure 29. Active-on Remote ON/OFF.
QR
ON/OFF
47 k
PI-2640-040501
Typical Uses of MULTI-FUNCTION (M) Pin
+
DC
Input
Voltage
CS S
M
D
SS
D
M
CD
S
CONTROL
C
-
S
PI-2508-081199
Figure 30. Three Terminal Operation (MULIT-FUNCTION Features
Disabled).
+
DC
Input
Voltage
VUV = IUV x RLS
VOV = IOV x RLS
RLS
2 MFor RLS = 2 M
VUV = 100 VDC
VOV = 450 VDC
DCMAX@100 VDC = 78%
D
M
DCMAX@375 VDC = 38%
CONTROL
C
-
S
PI-2509-040501
Figure 31. Line-Sensing for Undervoltage, Over-Voltage and Line
Feed-Forward.
+
DC
Input
Voltage
6.2 V
2 M
VUV = RLS x IUV
For Value Shown
RLS VUV = 100 VDC
22 k
D
M
CONTROL
C
-
S
PI-2510-040501
Figure 32. Line-Sensing for Under-Voltage Only (Overvoltage
Disabled).
+
DC
Input
Voltage
2 M
RLS
VOV = IOV x RLS
For Values Shown
VOV = 450 VDC
30 k
1N4148
D
M
CONTROL
C
-
S
PI-2516-040501
Figure 33. Line-Sensing for Overvoltage Only (Under-Voltage
Disabled). Maximum Duty Cycle Reduced at Low Line
and Further Rediction with Increasing Line Voltage.
17 M
12/04
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