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参数资料
| 型号： | PSK3620-9EPCB |
| 厂商： | POWER-ONE INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封装： | METAL, CASE K01, MODULE |
| 文件页数： | 8/19页 |
| 文件大小： | 370K |
| 代理商： | PSK3620-9EPCB |
PSS, PSK Extended Data Sheet
Positive Switching Regulator (Industrial)
REV. FEB 25, 2004
Page 16 of 19
Table 13: Crowbar trigger levels
Characteristics
Condition
PSS 5A12
PSS 1212
PSS 2412
PSS 3612
PSK 5A16
PSK 1216
PSK 2416
PSK 3616
PSK 5A20
PSK 1220
PSK 2420
PSK 3620
PSK 5A25
min
typ
max
min
typ
max
min
typ
max
min
typ
max
Unit
Vo c
Trigger voltage
TC min - TC max
6.3
6.7
17.8 18.9
28.89 30.6
47.0 50.0
VDC
Vi min - Vi max
14.3 15.2 1
43.0 45.5 1
ts
Delay time
Io = 0 - Io nom
1.5
s
1 Crowbar trigger voltage with option P
Description of Options
-9
Extended Temperature Range
This option defines an extended operational ambient tem-
perature range of
TA = –40 to 71°C.
P
Potentiometer
Note: Option P is not recommended, if several modules
are operated in parallel connection.
Option P excludes R function. The output voltage
Vo can be
adjusted with a screwdriver in the range from 90 - 110%
Vonom.
However, the minimum differential voltage
Vio min be-
tween input and output as specified in
Electrical Input
Data should be maintained.
E
Inrush Current Limitation
Note: This option requires increased minimum input volt-
age of up to 1 V, dependent upon input range. In battery
driven applications the use of option E is essential due to
very low battery impedances.
Inrush current can reach several thousand amperes de-
pending on the source and input line conditions. Immedi-
ately after application of the input supply, the inrush current
is limited by parasitic components of the voltage source
and power supply input only. The power supply input
presents a very low impedance to such currents and when
driven from a low impedance source, for example a
battery, the inrush current can peak at several orders of
magnitude above the continuous DC input current. Option
E dramatically reduces this peak current and is recom-
mended for any application to protect series elements
such as switches or circuit brakers and rectifiers. After
startup, the resistor is bypassed for normal operation.
[A]
t [ms]
40 (typical)
0
100 (typical)
Normal operation
(15
resistor bypassed)
Soft start
Inrush limit
Startup
(I
i = ––––)
Vi
15
11029
Fig. 15
Option E: Inrush current versus time
C
Thyristor Crowbar
Note: The thyristor can be deactivated by removal of the in-
put voltage only. The inhibit signal cannot deactivate the
thyristor.
Option C protects the load against power supply malfunc-
tion. It is not designed to sink external currents.
As a central overvoltage protection device, the crowbar is
usually connected to the external load via distributed in-
ductance of the lines. For this reason, the overvoltage at
the load can temporarily exceed the trigger voltage
Vo c.
Depending on the application, further decentralized over-
voltage protection elements may have to be used addition-
ally.
A fixed-value monitoring circuit checks the output voltage
Vo and when the trigger voltage Vo c is reached, the thyristor
crowbar triggers and disables the output.
An external connection C (crowbar trigger control) is pro-
vided. When crowbar option is used with two or more
power supplies in parallel connection, all crowbar trigger
terminals (C) should be interconnected. This ensures all
crowbar circuits triggering simultaneously in order to
disable all outputs at once. The crowbar trigger voltage is
maintained between Vo+ and Go–. To prevent false
triggering, the user should ensure that
Vo (between Vo+
and Go–) deos not exceed
Vo c.
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