
Industrial Environment
Switching Regulators, PCB & Chassis
PSC-Family
Edition 2/96 - Melcher AG
4 - 59
MELCHER
The Power Partners.
4.2
Table 8b: Input and output data
Characteristics
Conditions
PSC 158
PSC 248
PSC 368
Unit
min
typ
max
min
typ
max
min
typ
max
Output
Uo nom Output voltage
Ui nom, Io nom
14.91
15.09
23.85
24.14
35.78
36.22
V
Io nom
Output current
Ui min...Ui max
8.0
A
IoL
Output current
TC min...TC max
8.0
10.4
8.0
10.4
8.0
10.4
limitation response
uo
Ripple at output
Ui nom
80
150
100
250
150
300
mVpp
(BW = 20 MHz)
Io nom
Uo U Static control deviation Ui min...Ui max
70
100
150
220
200
270
mV
versus input voltage
Ui Io nom
U
o I
Static control deviation
Ui nom
35
45
120
160
125
160
versus output current
Io Io = 0…Io nom
uo d
Dynamic control
Ui nom
130
150
220
deviation 1
Io nom
1/3 Ionom
t r
Dynamic load transient
60
80
100
s
time recovery 1
αuo
Temperature coefficient
Ui min...Ui max
±3
±5
±8
mV/K
Uo/TC
TC min...TC max
Io = 0...Io nom
±0.02
%/K
Input
Ui
Input voltage
Io = 0...Io nom
19
80
29
80
42
80
V DC
TC min...TC max
Uio min Minimum differential
4
5
6
V
voltage
Ui - Uo 2
Ui o
Undervoltage cut-out
7.3
12
19
Ii 0
No load
Io = 0
35
40
mA
input current
Ui min...Ui max
Ii m
Peak value of
Ui nom
250
A
inrush current 3
ti s
Rise time 3
555
s
ti r
Tail half value time 3
40
Ii m
Peak value of
Ui nom
350
A
inrush current 3
with option L
ti s
Rise time 3
25
s
ti r
Tail half value time 3
125
ui rfi
RFI level at input, 4
VDE 0871 (6.78)
B
dB
0.01...30 MHz
Uimin...max, Io nom
(
V)
Efficiency
η
Efficiency
Ui nom, Io nom
91
94
96
%
Isolation
Uis
Isolation test voltage
Inputs/outputs
750
V DC
electronics to case
interconnected
1 See "Dynamic characteristics"
2 The minimum differential voltage
Uio min between input and output increases linearly from 0 to 1 V at TA = 46°C and 71°C
(
TC = 70
°C and 95°C)
3 Definitions according to VDE 0433, part 3
4 With option L and additional external input capacitor Ce = 120 F/100 V, e.g. Nichicon, PF(M) series, or equivalent