PSC Series Extended Data Sheet
Positive Switching Regulators (Industrial)
b) Vo = 0 - 100% Vo nom, using R1 between R and G (Go-):
4000 Ω • Vo
Vo nom • R1
R1 ≈ –––––––––––
Vo ≈ –––––––––––
Vo nom – Vo
R1 + 4000 Ω
c) Vo = Vo nom - Vo max, using R2 between R and Vo+:
Vo max = Vo nom + 8%
4000 Ω • Vo • (Vo nom – 2.5 V)
R2 ≈ ––––––––––––––––––––––––
2.5 V • (Vo – Vo nom
)
Vo nom • 2.5 V • R2
Vo ≈ ––––––––––––––––––––––––––––––––
2.5 V • (R2 + 4000 Ω) – Vo nom • 4000 Ω
LED Output Voltage Indicator
A yellow output indicator LED shines when the output volt-
age is higher than approx. 3 V.
Electromagnetic Compatibility (EMC)
Electromagnetic Immunity
General condition: Case not earthed.
Table 5: Immunity type tests
Phenomenon
Standard 1
Class
Level
Coupling
mode 2
Value
applied
Waveform
Source
Imped.
Test
procedure
In
Per-
oper. form. 3
1 MHz burst
disturbance
IEC
60255-22-1
III
i/o, i/c, o/c
+i/–i, +o/–o
i/c, +i/–i
2500 Vp
1000 Vp
800 Vp
400 damped
1 MHz waves/s
200 Ω
2 s per
coupling mode
yes
yes
A 5
B
Voltage surge
IEC 60571-1
100 µs
50 µs
100 Ω
1500 Vp
1 pos. and 1 neg.
voltage surge per
coupling mode
3000 Vp
4000 Vp
7000 Vp
5 µs
1 µs
100 ns
1/50 ns
Electrostatic
discharge
IEC/EN
61000-4-2
3
2
contact discharge 6000 Vp
to case
330 Ω
10 positive and
10 negative
discharges
yes
A 4
A
Electromagnetic IEC/EN
field
antenna
i/c, +i/–i
3 V/m
AM 80%
1 kHz
80 - 1000 MHz
yes
yes
61000-4-3
Electrical fast
transients/burst 61000-4-4
IEC/EN
3
4
2000 Vp bursts of 5/50 ns 50 Ω
60 s positive
60 s negative
bursts per
A 4 5
B 4 5
5 kHz rep. rate
transients with
15 ms burst
4000 Vp
coupling mode
duration and a
300 ms period
Surge
IEC/EN
61000-4-5
3
3
i/c
2000 Vp
1000 Vp
1.2/50 µs
12 Ω
2 Ω
5 pos. and 5 neg.
surges per
coupling mode
yes
yes
B 4 5
+i/–i
Conducted
disturbances
IEC/EN
61000-4-6
i, o, signal wires 140 dBµV
AM 80%
1 kHz
150 Ω
0.15 - 80 MHz
A
(10 VAC)
1 For related and previous standards see: Technical Information: Safety & EMC. 2 i = input, o = output, c = case.
3 A = Normal operation, no deviation from specifications, B = Normal operation, temporary deviation from specs possible.
4 Option L neccessary. 5 With option C, manual reset might be necessary.
REV. MAY 12, 2004
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