PSK1212-9 POWER ONE, PSK1212-9 Datasheet - Page 9

• Manufacturer Part Number: PSK1212-9
• Manufacturer: POWER ONE
• Type: Step Downr

Specifications of PSK1212-9

• Output Current: 12A
• Input Voltage: 18 to 144V
• Output Voltage: 12V
• Number Of Outputs: 1
• Output Power: 144
• Screening Level: Commercial
• Operating Temperature Min Deg. C: -40C
• Operating Temperature Max Deg. C: 71C
• Product Length (mm): 168.5mm
• Product Depth (mm): 111mm
• Product Height (mm): 80mm
• Mounting Style: Screw
• Pin Count: 15
• Lead Free Status / Rohs Status: Not Compliant

Fig. 2
Dynamic load regulation.
Output Protection
A voltage suppressor diode, which in worst case conditions
fails into a short-circuit, protects the output against an
internally generated overvoltage. Such an overvoltage could
occur due to a failure of either the control circuit or the
switching transistor. The output protection is not designed to
withstand externally applied overvoltages.
Current Limitation
A constant current limitation circuit holds the output current I
almost constant in the area of 100 to 120% of I
overload or a short-circuit is applied to the output. It acts self-
protecting and recovers – in contrary to the fold back method –
automatically after removal of the overload or short-circuit
condition.
Table 4e: Output data of PSK models. General conditions as per table 3a
Output Voltage Regulation
The dynamic load regulation is shown in fig. 2
BCD20029-G Rev AA, 28-Apr-09
Output
Characteristics
V
I
I
v
v
t
o
oL
d
o
o d
V
V
Vo
o
o V
o l
0.5
I
V
o
/I
o
1
0
o nom
Output voltage
Output current
Output current limit
Output
voltage
noise
Static line regulation
Static load regulation
Dynamic
load
regulation
Temperature coefficient
V
V
10 µs
od
o
/ T
C
(T
C min
Switching freq.
Total incl. spikes
Voltage deviat.
Recovery time
t
d
to T
®
C max
V
V
od
)
o
±1%
BW = 20 MHz
Conditions
V
V
T
V
IEC/EN 61204
V
V
V
I
IEC/EN 61204
V
I
o nom
o
C min
i nom
i min
i nom
i min
i nom
i nom
i min
10 µs
= 0 – I
t
d
, I
– V
, I
– V
, I
– V
– T
o nom
o nom
o
1
/
i max
i max
= 0 – I
i max
3
o nom
C max
I
05102c
o nom
o nom
, I
V
o
o nom
o nom
±1%
, when an
t
t
35.78
Page 9 of 20
min
12
0
o
PSK3612
Fig. 3
Overload, short-circuit behaviour V
Parallel and Series Connection
Outputs of equal nominal voltage may be parallel-connected.
Interconnect the current sharing pins T (pin 22) for even
distribution of the output current; see Auxiliary Functions.
Outputs can be series-connected with any other regulator,
provided that the regulators are powered by electrically
isolated source voltages. In series connection the maximum
output current is limited by the lowest current limitation.
120
200
typ
35
39
60
70
V
1.0
0.8
0.6
0.4
0.2
o
±0.02
0
36.22
/V
max
250
120
12
15
60
64
±5
o nom
0.2
47.71
min
12
Positive Switching Regulators
0
PSK4812
PSS, PSK Series Data Sheet
0.4
150
200
typ
35
39
70
70
0.6
48.29V
±0.02
max
350
150
±10
12
15
60
64
0.8
mV/K
mV
o
Unit
%/K
mV
μs
versus I
A
pp
1.0
I
o L
www.power-one.com
1.2
o
.
05038a
I
o
/I
o nom