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TOP264VG Datasheet(PDF) 14 Page - Power Integrations, Inc.

Part # TOP264VG
Description  Integrated Off-Line Switcher with EcoSmart Technology for Highly Efficient Power Supplies
PDF  36 Pages
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Manufacturer  POWERINT [Power Integrations, Inc.]
Direct Link  http://www.powerint.com
Logo POWERINT - Power Integrations, Inc.

TOP264VG Datasheet(HTML) 14 Page - Power Integrations, Inc.

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Rev. B 03/10
14
TOP264-271
www.powerint.com
Typical Uses of VOLTAGE MONITOR (V) and EXTERNAL CURRENT LIMIT (X) Pins (cont.)
X
PI-5465-061009
DC
Input
Voltage
+
-
D
S
C
2.5 M
Ω
RLS
6 k
Ω
RIL
100% @ 100 VDC
53% @ 300 VDC
ILIMIT =
ILIMIT =
CONTROL
X
PI-5466-061009
DC
Input
Voltage
+
-
D
S
C
ON/OFF
47 K
Ω
QR can be an optocoupler
output or can be replaced by
a manual switch.
QR
CONTROL
X
ON/OFF
16 k
Ω
PI-5531-072309
DC
Input
Voltage
+
-
D
S
C
RIL
QR
12 k
Ω
For RIL =
ILIMIT = 61%
19 k
Ω
For RIL =
ILIMIT = 37%
QR can be an optocoupler
output or can be replaced
by a manual switch.
CONTROL
Figure 18. Current Limit Reduction with Line Voltage.
Figure 19. Active-on (Fail Safe) Remote ON/OFF, and Latch Reset.
Figure 20. Active-on Remote ON/OFF with Externally Set Current Limit,
and Latch Reset
X
ON/OFF
16 k
Ω
PI-5467-061009
DC
Input
Voltage
+
-
D
S
C
CONTROL
V
RIL
RLS
QR
4 M
Ω
VUV = IUV × RLS + VV (IV = IUV)
VOV = IOV × RLS + VV (IV = IoV)
DCMAX@100 VDC = 76%
DCMAX@375 VDC = 41%
12 k
Ω
For RIL =
ILIMIT = 61%
QR can be an optocoupler
output or can be replaced
by a manual switch.
X
DC
Input
Voltage
+
-
D
S
C
CONTROL
V
RIL
RLS
12 k
Ω
4 M
Ω
VUV = IUV x RLS + VV (IV = IUV)
VOV = IOV x RLS + VV (IV = IoV)
For RLS = 4 MΩ
DCMAX @ 100 VDC = 76%
DCMAX @ 375 VDC = 41%
For RIL = 12 kΩ
ILIMIT = 61%
See Figure 35 for
other resistor values
(RIL) to select different
ILIMIT values.
VUV = 102.8 VDC
VOV = 451 VDC
Figure 21. Active-on Remote ON/OFF with Line Sense and External
Current Limit, and Latch Reset.
Figure 22. Line Sensing and Externally Set Current Limit.
Figure 23. Externally Set Current Limit, Fast AC Latch Reset and Brownout.
X
AC
Input
R1
4 M
Ω 1N4007
C1
47 nF
PI-5652-110609
+
-
D
S
C
RIL
QR
Typ. 65 VAC brownout threshold.
<3 s AC latch reset time.
Higher gain QR allows increasing R1/
decreasing C1 for lower no-load input
power.
CONTROL
R2
39 k
Ω
DC
Input
Voltage



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