TOP260YN Datasheet, PDF (20/51 Pages) Power Integrations, Inc. – Enhanced EcoSmart™, Integrated Off-Line Switcher with Advanced Feature Set and Extended Power Range

TOP252-262
Typical Uses of MULTI-FUNCTION (M) Pin (cont.)
+
Q_R can be an optocoupler
output or can be replaced
by a manual switch.
DC
Input
Voltage
Q_R
ON/OFF
47
-
kΩ
D
M
CONTROL
C
S
Figure 37. Active-on (Fail Safe) Remote ON/OFF.
PI-2519-040501
+
Q_R can be an optocoupler
output or can be replaced
by a manual switch.
DC
Input
Voltage
R_IL
ON/OFF
Q_R
1_-6 kΩ
D
M
CONTROL
C
S
For R_IL = 12 kΩ
I_LIMIT = 61%
For R_IL = 19 kΩ
I_LIMIT = 37%
PI-4735-092107
Figure 38. Active-on Remote ON/OFF with Externally Set Current Limit
(see M Pin Operation Description).
+
Q_R can be an optocoupler
output or can be replaced
by a manual switch.
ON/OFF
DC
Input
Voltage
7 kΩ
D
Q_R
R_MC
M
R_IL 12 kΩ
CONTROL
C
24 kΩ
R_MC = 2R_IL
-
S
PI-4736-060607
Figure 39. Active-off Remote ON/OFF with Externally Set Current Limit
(see M Pin Operation Description).
+
DC
Input
Voltage
Reset ^{10 kΩ}
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 MΩ
R_LS
4 MΩ ^VUV ^{= 102.8 VDC}
V_OV = 451 VDC
Sense Output Voltage
D
Q_R
DC_MAX @ 100 VDC = 76%
M
DC_MAX @ 375 VDC = 41%
CONTROL
C
-
S
PI-4757-120307
Figure 40. Line-Sensing for Undervoltage, Overvoltage, Line Feed-Forward and
Latched Output Overvoltage Protection with Device Reset.
20
Rev. H 06/13
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