TOP249 View Datasheet(PDF) - Power Integrations, Inc
Part Name
Description
MFG CO.
'TOP249' PDF : 52 Pages View PDF
TOP242-250
Typical Uses of MULTI-FUNCTION (M) Pin (cont.)
+
+
QR can be an optocoupler
output or can be replaced
by a manual switch.
QR can be an optocoupler
output or can be replaced
by a manual switch.
DC
Input
Voltage
ON/OFF
QR
4-7 kΩ
D
M
CONTROL
C
S
Figure 36. Active-on (Fail Safe) Remote ON/OFF.
DC ON/OFF
Input
Voltage
QR
47 kΩ
D
RMC
M 45 kΩ
CONTROL
C
-
S
General PI-2519-040501 Information & Table of Contents PI-2522-040501
Figure 37. Active-off Remote ON/OFF. Maximum Duty Cycle will
be Reduced.
Product Selector Guide 1
+
DC
Input
Voltage
RIL
ON/OFF
QR
4-7 kΩ
QR can be an optocoupler
output or can be replaced
by a manual switch.
For RIL = 12 kΩ
ILIMIT = 69 %
D
M
For RIL = 25 kΩ
ILIMIT = 43 %
CONTROL
C
S
PI-2520-040501
Figure 38. Active-on Remote ON/OFF with Externally Set
Current Limit.
+
Data Sheets 2 QR can be an optocoupler
output or can be replaced
by a manual switch.
AQRpplication Notes 3
DC
ON/OFF
47 kΩ
Input
Voltage
Design Ideas 4 RMC 24 kΩ RMC = 2RIL
D
M
CONTROL
RIL 12 kΩ
DC esign Tools 5
-
S
Quality and Reliability PI-2521-040501 6
Figure 39. Active-off Remote ON/OFF with Externally Set
Current Limit.
Package Information 7
20 H
9/02
DPA-Switch DC-DC Seminar 8
+
QR can be an optocoupler
output or can be replaced
LinkSwitcRhLS
TinySwitch-II &2 MΩ
by a manual switch.
AC-DC
Seminar
9
QR
DC ON/OFF
Input
47 kΩ
TOPSwitch-GX AC-DC Seminar 10
Voltage
For RLS = 2 MΩ
D
M
Sales
Representatives CONTROL
C
VUV = 100 VDC
VOV = 450 VDC
and
Distributors
11
-
S
PI-2523-040501
Figure 40. Active-off Remote ON/OFF with LINE-SENSE.
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