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

部件名 TOP264VG
功能描述  Integrated Off-Line Switcher with EcoSmart Technology for Highly Efficient Power Supplies
PDF  40 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  POWERINT [Power Integrations, Inc.]
网页  http://www.powerint.com
标志 POWERINT - Power Integrations, Inc.

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

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Rev. E 08/12
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 19. Current Limit Reduction with Line Voltage.
Figure 20. Active-On (Fail Safe) Remote-ON/OFF, and Latch Reset.
Figure 21. 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 37 for
other resistor values
(RIL) to select different
ILIMIT values.
VUV = 102.8 VDC
VOV = 451 VDC
Figure 22. Active-On Remote-ON/OFF with Line-Sense and External
Current Limit, and Latch Reset.
Figure 23. Line Sensing and Externally Set Current Limit.
Figure 24. Externally Set Current Limit, Fast AC Latch Reset and Brown-Out.
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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