FEATURES
DESCRIPTION
The cPCI-A-3U-300C is a high-reliability, 300W, continu-
ous power, 3Ux8HP CompactPCI™ power supply devel-
oped for chassis’ with airfl ows as low as 250lfm. The use
of 2 converters operating in parallel for the 3.3V and the
5V outputs enables maximum current draw on the two
outputs simultaneously. Compliant with the PICMG 2.11
standard.
With a widerange input of 90-264VAC, safety agency
approvals to UL60950 and EN60950, EMI compliance
to Class B FCC and EN55022 standards, the cPCI-A-
3U-300C was designed with globally-deployed systems
in mind. Additional features include remote sense com-
pensation, unit enable control (EN#), output inhibit control
(INH#), output fault signal (FAL#), and thermal warning
signal (DEG#). LEDs are provided for visual indication of
input power presence and output fault condition.
www.murata-ps.com
3Ux8HP package
300W power at 0-55ºC
PICMG 2.11 Compliant
Widerange 90-264VAC Input
Active power factor correction to EN61000-3-2
Class B conducted EMI performance
47-pin I/O Connector
81% effi ciency
Full power with just 250lfm airfl ow
Hot-swap capable
Notes:
INPUT CHARACTERISTICS
Parameter
Input Operating Voltage
Input Frequency
Input Current
Power Factor
Inrush Current
SELECTION GUIDE
Model Number
CPCI-A-3U-300C
OUTPUT CHARACTERISTICS
Output
V1
V2
V3
V4
Parameter
Line Regulation
PARD (V1 & V2)
PARD (V3 & V4)
Hold-up Time
Turn-on Delay
Rise Time
Transient Response
Over-Voltage and Short Circuit
Protection
Remote Sense Compensation
Current Share Tolerance
Isolation
2
2
2
2
1. Total power limited to 300W.
2. Maximum combined power from V1 & V3 not to exceed 185W. Maximum combined power for V2 & V4 not to exceed 140W.
3. Maximum voltage compensation for cable losses .
4. Tolerance applicable up to 6 parallel units. Single wire current share on V1 & V2 for 50% to 100% load.
5. Measured across 10μF tantulum load capacitor paralleled with 0.1μF ceramic capacitor.
6. Automatic recovery upon removal of overload condition.
6
5
5
4
Power
300W
3
Conditions
230Vac
Nominal Voltage
+5.0Vdc
+3.3Vdc
+12Vdc
-12Vdc
Conditions
All outputs
20MHz bandwidth
20MHz bandwidth
230VAC, full load
10% to 90% of full value
ΔV, 50% load step
Settling time
V1, V2, & V3: Latching
V1, V2
V1, V2
Pri-Sec
Pri-Chassis
Sec-Chassis
30A
5V
cPCI-A-3U-300C Series
Output Current
3.3V
40A
300W 3Ux8HP AC/DC CompactPCI™
12V
5A
1
-12V
0.5A
110
100
Min
Min
1.5
Output Current
0A
0A
0A
0A
3
www.murata-ps.com/rohs
For full details go to
cPCI-A-3U-300C.A03 Page 1 of 4
Yes
Min
90
47
0.5A
Max
30A
40A
300
Typ
0.5
5A
14
30
0.98
Typ
Load Regulation
Max
±10
120
500
130
±5
90
2
Max
0.99
264
5.0
63
50
±1%
±1%
±4%
±4%
Yes
%V
%V
msec
msec
Units
mV
mV
μsec
kVac
kVac
Vdc
sec
mV
%
%
Units
Vac
A
A
nom
nom
Hz
p-p
p-p
rms
pk
1