CPA Series
OPERATING INSTRUCTIONS
March 24, 2009
www.schroff.biz
73972-077/52
Page
3
Electrical Output Data
General Conditions:
CPA250: 400 LFM (2 m/s)
–
T
A
= 25 °C, unless
T
c
is specified.
– Sense lines connected directly at the connector
Output data of CPA250
Output
Vo1 (5.0 V)
Vo2 (3.3 V)
Unit
Characteristics
Conditions
min
typ
max
min
typ
max
V
o
Output voltage
V
i nom
, 50%
I
o nom
4.95
5.0
5.05
3.267
3.3
3.333
V
DC
I
o
nom
Nominal output current
25
20
I
o
max
Max. output current
V
i min
–
V
i max
40
40
I
oL
Output current limit
T
C min
–
T
C max
50 50
I
o
min
Minimum load
no min. load required
no min. load required
A
v
o
Switch.
frequ.
V
i nom
,
I
o nom
BW = 20 MHz
25 20
Output
voltage
noise
Total
C
ext
= 22 µF + 100 nF
60 60
mV
pp
∆
V
o
V
Static line regulation
V
i min
–
V
i max
,
I
o nom
±10 ±10
∆
V
o
L
Static load regulation
V
i nom
, 50 – 100%
I
o max
±10 ±10
∆
V
o
S
Overshoot at switch
on/off
0
0
mV
v
o d
Dynamic
load
Voltage
deviation
Vo1:
∆
I
o1
= 10 A, d
I
o1
/dt = 2 A/µs
Vo2:
∆
I
o2
= 10 A, d
I
o2
/dt = 2 A/µs
±
120
± 120
mV
t
d
regulatio
n
Recovery
time
100
100
µs
α
V
o
Temperature coefficient
of output voltage
T
C min
–
T
C max
0 –
I
o nom
,
V
i min
–
V
i
max
±0.3
±0.2
mV/K
Output
Vo3 (+12 V)
Vo4 (–12 V)
Unit
Characteristics
Conditions
min
typ
max
min
typ
max
V
o
Output voltage
V
i nom
, 50%
I
o nom
11.88
12.0
12.12
–11.52
–12.0 –12.48
V
DC
I
o nom
Nominal output current
4
1
A
I
o max
Max. output current
V
i min
–
V
i max
5.5
2
I
oL
Output current limit
T
C min
–
T
C max
7
3.5
I
o min
Minimum load
Io3 > 75% Io4
1
v
o
Switch.
frequ.
V
i nom
,
I
o nom
BW = 20 MHz
mV
pp
Output
voltage
noise
Total
C
ext
= 22 µF + 100 nF
120
120
∆
V
oV
Static line regulation
V
i min
–
V
i max
,
I
o nom
±10
±10
mV
∆
V
oL
Static load regulation
V
i nom
,
I
o
= 1 – 2 A
±30
– 380
2
∆
V
oS
Overshoot at switch
on/off
0
0
Vo3:
∆
I
o3
= 2 A, d
I
o3
/dt = 2 A/µs
± 200
± 200
v
o d
Voltage
deviation
Vo4:
∆
I
o4
= 0.5 A, d
I
o4
/dt = 2
A/µs
t
d
Dynamic
load
regulation Recovery
time
500
500
µs
α
V
o
Temperature
coefficient
of output voltage
T
C min
–
T
C max
0 –
I
o nom
,
V
i min
–
V
i max
±0.3
±0.5
mV/K
1
Minimum load is only required to maintain regulation of Vo4
2
Droop characteristic for passive current sharing
