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Edition 5/05.2001
• Efficiency up to 97%
• Low input-output differential voltage
• No derating over temperature
PSS, PSK Series 9...25 A Switching Regulators
Input voltage up to 144 V DC
Single output of 3.3...48 V DC
No input to output isolation
Selection chart
Output Input voltage Rated power Efficiency Type Options
U
o nom
I
o nom
U
i
P
o tot htyp
[V DC] [A] [V DC] [W] [%]
3.3 25 8...40 82.5 82 PSK 3E25-7 -9, E, P, B, B1
5.1 12 8...80 61.2 79 PSS 5A12-7 -9, E, P, C, B, B1
5.1 14 8...40 71.4 83 PSS 5A14-2 B, B1
5.1 16 8...80 81.6 79 PSK 5A16-7 -9, E, P, C, B, B1
5.1 18 8...40 91.8 82 PSK 5A18-2 B, B1
5.1 20 8...80 102 79 PSK 5A20-7 -9, E, P, C, B, B1
5.1 25 8...40 127.5 82 PSK 5A25-7 -9, E, P, C, B, B1
12 (15) 9 18...144 108 (135) 91 PSS 129-7 -9, E, P, C, B, B1
12 (15) 12 15...80 144 (180) 91 PSS 1212-7 -9, E, P, C, B, B1
12 (15) 12 18...144 144 (180) 91 PSK 1212-7 -9, E, P, C, B, B1
12 (15) 14 16...40 168 (210) 90 PSS 1214-2 B, B1
12 (15) 16 15...80 192 (240) 90 PSK 1216-7 -9, E, P, C, B, B1
12 (15) 18 16...40 216 (270) 90 PSK 1218-2 B, B1
12 (15) 20 15...80 240 (300) 90 PSK 1220-7 -9, E, P, C, B, B1
24 9 31...144 216 94 PSS 249-7 -9, E, P, C, B, B1
24 12 29...80 288 94 PSS 2412-7 -9, E, P, C, B, B1
24 12 31...144 288 94 PSK 2412-7 -9, E, P, C, B, B1
24 14 29...60 336 94 PSS 2414-2 B, B1
24 16 29...80 384 94 PSK 2416-7 -9, E, P, C, B, B1
24 18 29...60 432 94 PSK 2418-2 B, B1
24 20 29...80 480 94 PSK 2420-7 -9, E, P, C, B, B1
36 9 44...144 324 96 PSS 369-7 -9, E, P, C, B, B1
36 12 42...80 432 96 PSS 3612-7 -9, E, P, C, B, B1
36 12 44...144 432 96 PSK 3612-7 -9, E, P, C, B, B1
36 16 42...80 576 95 PSK 3616-7 -9, E, P, C, B, B1
36 20 42...80 720 95 PSK 3620-7 -9, E, P, C, B, B1
48 9 58...144 432 97 PSS 489-7 -9, E, P, C, B, B1
48 12 58...144 576 97 PSK 4812-7 -9, E, P, C, B, B1
285
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Edition 5/05.2001
Cassette Style PSS, PSK Series
Input
Input voltage refer to selection chart
No load input current ≤50 mA
Output
Efficiency
U
i nom,
I
o nom up to 97%
Output voltage setting accuracy
U
i nom,
I
o nom ±0.6%
U
o nom
Output voltage switching noise IEC/EN 61204, total typ. 0.2%
Line regulation
U
i min...
U
i max,
I
o nom typ. ±0.2%
Load regulation
U
i nom, 0...
I
o nom typ. 0.15%
Minimum load not required 0 A
Current limitation rectangular U/I characteristic typ. 110%
I
o nom
Operation in parallel current sharing feature (CS)
Hold-up time
U
i nom,
I
o nom, with ext. diode in input line, PSS up to 7 ms
Protection
Input reverse polarity built-in fuse
Input undervoltage lockout typ. 80%
U
i min
Input transient protection suppressor diode
Output no-load, overload and short circuit proof
Output overvoltage suppressor diode in each output typ. 150%
U
o nom
Overtemperature switch-off with auto restart
T
C typ. 100°C
Control
Inhibit TTL input, output enabled if left open
R control output voltage adjustment, PSS 0...108%
U
o nom
Output voltage indication LED
Sense lines compensation of voltage drop across the load lines, PSS
Test sockets test sockets for check of output voltage
Safety
Approvals EN 60950, UL 1950, CSA C22.2 No. 950
Protection degree units without options IP 20/30
Electric strength test voltage I/case and O/case 500/750/1500 V DC
EMC
Electrostatic discharge IEC/EN 61000-4-2
Electromagnetic field IEC/EN 61000-4-3
Electr. fast transients/bursts IEC/EN 61000-4-4
Surge IEC/EN 61000-4-5
Conducted disturbances IEC/EN 61000-4-6
Electromagnetic emissions CISPR 22/EN 55022
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Edition 5/05.2001
Environmental
Operating ambient temperature -2,
U
i nom,
I
o nom, convection cooled –10...50°C
Operating case temperature
T
C-2,
U
i nom,
I
o nom –10...80°C
Storage temperature -2, non operational –25...100°C
Operating ambient temperature -7,
U
i nom,
I
o nom, convection cooled –25...71°C
Operating case temperature
T
C-7,
U
i nom,
I
o nom –25...95°C
Storage temperature -7, non operational –40...100°C
Damp heat IEC/EN 60068-2-3
Vibration, sinusoidal IEC/EN 60068-2-6
Shock IEC/EN 60068-2-27
Bump IEC/EN 60068-2-29
Random vibration IEC/EN 60068-2-64
MTBF MIL-HDBK-217
Options
Large and small cooling plate instead of standard heatsink B/B1
Extended temperature range –40...71°C, ambient, operating -9
Electronic inrush current limitation E
Output voltage adjustment ±8%
U
o nom, excludes feature R and vice versa P
Thyristor crowbar on output C
Accessories
Front panels 19" (Schroff/Intermas), 12 und 16 TE
Mating H15 or H15 S4 connectors with screw, solder, fast-on or press-fit terminals
Connector retention facilities
Adapter kit for DIN-rail
Pin allocation
Electrical Determination Type H15 Type H15 S4
Pin No. Ident. Pin No. Ident.
Output voltage (positive) 4 Vo+ 4/6 Vo+
Output voltage (positive) 6 Vo+
Output voltage (negative) 8 Go–8/10 Go–
Output voltage (negative) 10 Go–
Crowbar trigger input (option C) 12 C 12 C
Inhibit input 14 i 14 i
R-input (output voltage programming) 1 16 R 16 R
Sense line (negative) 18 S–18 S–
Sense line (positive) 20 S+ 20 S+
Current sharing control input 22 CS 22 CS
Protective ground (leading pin) 24 24
Input voltage (negative) 26 Gi–26/28 Gi–
Input voltage (negative) 28 Gi–
Input voltage (positive) 30 Vi+ 30/32 Vi+
Input voltage (positive) 32 Vi+
PSS, PSK Series 9...25 A Switching Regulators
287
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Edition 5/05.2001
32 28 24 20 16 12 8 4
Connector type H15
S10010
30 26 22 18 14 10 6
Connector type H15 S4
S10010
32/30 24 20 16 12 4/6
26/28 22 18 14 10/8
H15 S4 connectors for 20 and 25 A types
Mechanical data
Tolerances ±0.3 mm (0.012") unless otherwise indicated.
European
Projection
159 (6.25") 4.5 (0.18")
89 (3.50")
111 (3U) (4.37")
168.5 (6.63")
80 (3.15")
6.5 (0.26")
7 TE 9 TE
Measuring point of
case temperature
T
C
171.93 (6.77") (DIN 41494)
50 (1.97")
S09029
Potentiometer
(option P)
Test sockets
LED OK
PSK
Pin allocation
Cassette Style PSS, PSK Series
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Edition 5/05.2001
111 (3U) 4.37")
168.5 (6.63")
Measuring point of
case temperature
T
C
60 (2.36")
7 TE 5 TE
25.9
(1.02")
171.93 (DIN 41494) (6.77")
11.8 (0.46")
152 (5.98")
100 (3.93")
M4
S09028
Potentiometer
(option P)
Test sockets
LED OK
PSS
PSS, PSK Series 9...25 A Switching Regulators
