TOP243 View Datasheet(PDF) - Power Integrations, Inc
Part Name
Description
Manufacturer
TOP243 Datasheet PDF : 52 Pages
| |||
Typical Uses of MULTI-FUNCTION (M) Pin
TOP242-250
+
DC
Input
Voltage
CS S
M
D
SS
D
M
CD
S
CONTROL
C
-
S
PI-2508-081199
Figure 30. Three Terminal Operation (MULTI-FUNCTION
Features Disabled).
+
DC
Input
Voltage
VUV = IUV x RLS
VOV = IOV x RLS
RLS
2 MΩ For RLS = 2 MΩ
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 MΩ
VUV = RLS x IUV
For Value Shown
RLS VUV = 100 VDC
22 kΩ
D
M
CONTROL
C
-
S
PI-2510-040501
Figure 32. Line Sensing for Under-Voltage Only (Overvoltage
Disabled).
+
DC
Input
Voltage
2 MΩ
RLS
VOV = IOV x RLS
For Values Shown
VOV = 450 VDC
30 kΩ
1N4148
D
M
CONTROL
C
-
S
PI-2516-040501
Figure 33. Line Sensing for Overvoltage Only (Under-Voltage
Disabled). Maximum Duty Cycle will be reduced at
Low Line.
+
DC
Input
Voltage
RIL
For RIL = 12 kΩ
ILIMIT = 69%
For RIL = 25 kΩ
ILIMIT = 43%
See fig. 55 for other
resistor values (RIL)
D
M
to select different
ILIMIT values
CONTROL
C
-
S
Figure 34. Externally Set Current Limit.
PI-2517-040501
+
RLS 2.5 MΩ
ILIMIT = 100% @ 100 VDC
ILIMIT = 63% @ 300 VDC
DC
Input
Voltage
RIL 6 kΩ
D
M
CONTROL
C
-
S
PI-2518-040501
Figure 35. Current Limit Reduction with Line Voltage.
19 H
9/02
Share Link: 