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PST26 Datasheet(PDF) 4 Page - Power System Technology

Part No. PST26
Description  Standard product
Download  11 Pages
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Manufacturer  PST [Power System Technology]
Direct Link  http://www.powersystemtechnology.com/
Logo PST - Power System Technology

PST26 Datasheet(HTML) 4 Page - Power System Technology

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Parallel and Series Connec�on
PST26 Rev. 00
Page 4 of 11
www.powersystemtechnology.com
Redundant Systems Opera�on
Hold-up �me
The converters provide internal hold-up �me (see curve).
Hot Swap
The hot swap is not recommended because of the inrush current. Ne-
vertheless with some external cau�ons it may be possible. We recom-
mend to consult our technical support before opera�ng in this mode.
Output Current Limita�on
All outputs are con�nously protected against short-circuit by a constant
current limita�on.(no foldback)
Thermal Considera�ons
When a converter is mounted in free air, in convec�on cooling, and is
opera�ng at its nominal output power at the max. ambiant temperatu-
re, the temperature measured on the heatsink should not exeed 95°C.
The dera�ng curves show the max power available from the converter
versus ambiant temperature.
Thermal protec�on
A temperature protec�on is integrated in each Vicor module, disabling
output when heatsink temperature exceeds 105°C the converter auto-
ma�cally restarts, when the temperature drops below this limit. Never-
theless, exeeding the max opera�ng temperature may cause failures of
the converter.
25
50
75
100
125
150
175
200
225
250
275
300
325
350
375
400
-20
0°C
20°C
40°C
60°C
80°C
T°C
PST26300 Output power vs Ambiant temp.
Free air
2 m/s
A converter output can be connected in series with an output from a
separate converter, an external diode across each output is required.
The maximum output current of a serial-connected outputs is limited
by the output with the lowest current limit.Output voltages above 48V
(SELV - Safety Extra Low Voltage) require addi�onal safety measures in
order to comply with interna�onal safety requirements.
Parrallel opera�on is possible with the addi�on of external diodes in
series with each output.
When systems require a very high level of reliability and should work
normally in the event of a failure, N+1 redundancy is implemented
where N is the number of converter to support power requirement.
If one converter fail, the remaining ones s�ll delivers the power to the
loads.
External diodes are required with the PST26 to ensure proper N+1
opera�on .
25
50
75
100
125
150
175
200
225
-20
-10
0°C 10°C 20°C 30°C 40°C 50°C 60°C 70°C 80°C 85°C
T°C
PST26150 Output power vs ambiant temp.
Free air
2m/s


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