The PFE1500-12-054xD is 1500 watt DC to DC power supply that
converts DC input into a main output of 12 VDC for powering
intermediate bus architectures (IBA) in high performance and reliability
servers, routers, and network switches.
The PFE1500-12-054xD meets international safety standards and
displays the CE-Mark for the European Low Voltage Directive (LVD).
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•
•
High Efficiency, typ. 94% efficiency at half load
Wide input voltage range: 40
–
72 VDC
Always-On standby output (model dependent):
o
o
Programmable 3.3 V / 5 V (16.5 W)
12 V @ 3 A (36 W)
•
•
•
•
•
•
•
Hot-plug capable
Parallel operation with active digital current sharing
High density design: 35 W/in
3
Small form factor: 54.5 x 40.0 x 321.5 mm
I
2
C communication interface for control, programming and monitoring
with PMBus® protocol
Over temperature, output overvoltage and overcurrent protection
256 Bytes of EEPROM for user information
2 Status LEDs: IN OK and OUT OK with fault signaling
•
•
•
•
High Performance Servers
Routers
Switches
Disclaimer: PMBus is a registered trademark of SMIF, Inc.
2
PFE1500-12-054xD
Product Family
PFE Front-Ends
Power Level
1500 W
Dash
V1 Output
12 V
Dash
Width
54 mm
Airflow
N: Normal
R: Reverse
Input
DC
* Consult factor for availability.
Product Family
PFE Front-Ends
Power Level
1500 W
Dash
V1 Output
12 V
Airflow
N: Normal air flow
R: Reverse air flow
Input
DC
VSB Output
12VSB
The PFE1500-12-054xD DC/DC power supply is a DSP controlled, high efficient front-end power supply. It incorporates state of the
art technology and uses an interleaved forward converter topology with active clamp and synchronous rectification to reduce
component stresses, thus providing increased system reliability and very high efficiency. With a wide input DC voltage range the
PFE1500-12-054xD maximizes power availability in demanding server, network, and other high availability applications. The supply is
fan cooled and ideally suited for integration with a matching airflow path.
An active OR-ing device on the output ensures no reverse load current and renders the supply ideally suited for operation in redundant
power systems.
The always-on standby output provides power to external power distribution and management controllers. It is protected with an active
OR-ing device for maximum reliability.
Status information is provided with a front-panel LED. In addition, the power supply can be controlled and the fan speed set via the
I2C bus. The I2C bus allows full monitoring of the supply, including input and output voltage, current, power, and inside temperatures.
Cooling is managed by a fan controlled by the DSP controller. The fan speed is adjusted automatically depending on the actual power
demand and supply temperature and can be overridden through the I2C bus.
Figure 1. Block Diagram
tech.support@psbel.com
PFE1500-12-054xD
3
Stresses in excess of the absolute maximum ratings may cause performance degradation, adversely affect long-term reliability, and
cause permanent damage to the supply.
PARAMETER
Vi
maxc
Maximum Input Voltage
DESCRIPTION / CONDITION
Continuous
MIN
NOM
MAX
75
UNIT
VDC
General Condition: T
A
= 0… 45°C
unless otherwise specified.
PARAMETER
V
i nom
V
i
I
i max
I
i p
V
i on
V
i off
Nominal input voltage
Input voltage ranges
Max input current
Inrush Current Limitation
Turn-on input voltage
1
Turn-off input voltage
1
Normal operating (
V
i min
to
V
i max
)
40
CONDITIONS / DESCRIPTION
MIN
NOM
53
MAX
UNIT
VDC
72
45
VDC
A
rms
A
p
VDC
VDC
V
i min
to
V
i max
Ramping up
Ramping down
42
37
82
90
70
45
40
V
i nom
, 0.1∙
I
x nom
,
V
x nom
,
T
A
= 25 °C
η
V
i nom
, 0.2∙
I
x nom
,
V
x nom
,
T
A
= 25 °C
Efficiency without fan
V
i nom
, 0.5∙
I
x nom
,
V
x nom
,
T
A
= 25 °C
V
i nom
,
I
x nom
,
V
x nom
,
T
A
= 25 °C
V
1
> 10.8 V, V
SB
within regulation,
V
i
= 53 VDC,
P
Onom
(from DC input lost to V1 lost to 10.8V)
%
94
91
2
ms
T
hold
Hold-up Time
96
95
94
Efficiency [%]
93
92
91
90
89
88
87
0
10
20
30
40
50
Po [% nom]
60
70
80
90
100
Vi = 40Vdc, fan external
Vi = 53Vdc, fan external
Vi = 72Vdc, fan external
Platinum
Figure 2. Efficiency Curve
1
The Front-End is provided with a minimum hysteresis of 3 V during turn-on and turn-off within the ranges.
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Europe, Middle East
+353 61 225 977
North America
+1 408 785 5200
BCD.00801_002
© 2018 Bel Power Solutions
4
PFE1500-12-054xD
General Condition: T
A
= 0… 45°C
unless otherwise specified.
Main Output
V
1
V
1 nom
V
1 set
d
V
1 tot
Nominal Output Voltage
Output Setpoint Accuracy
Total Regulation
Nominal Output Power
Nominal Output Current
Output Ripple Voltage
Load Regulation
Line Regulation
Current Limitation
Current Sharing
Dynamic Load Regulation
Recovery Time
Start-Up Time From DC
Rise Time
Capacitive Loading
Deviation from
I
1 tot
/ N,
I
1
> 20%
Δ
I
1
= 50%
I
1 nom
,
I
1
= 5 … 100%
I
1 nom
,
d
I
1
/d
t
= 1 A/μs, recovery within 1% of
V
1 nom
0.5
∙
I
1 nom
,
T
amb
= 25 °C
-0.5
12.0
+0.5
+5
1500
125
150
480
150
128
-5
-0.6
2
2
1
70
10 000
140
+5
0.6
VDC
%
V
1 nom
%
V
1 nom
W
ADC
mVpp
mV
mV
ADC
%
V
ms
sec
ms
μF
V
i min
to
V
i max
,
0 to 100%
I
1 nom
, T
a min to
T
a max
V
1
= 12 VDC
V
1
= 12 VDC
V
1 nom
,
I
1 nom
, 20 MHz BW,
10nF/16V/X7R/1210 + 10uF/16V at
V
1
-5
P
1 nom
I
1 nom
v
1 pp
d
V
1 Load
d
V
1 Line
V
i
=
V
i nom
, 0 - 100 %
I
1 nom
V
i
=V
i min…
V
i max
I
1 max
d
I
share
d
V
dyn
T
rec
T
DC V1
t
V1 rise
C
Load
V
1
= 10.8 VDC
V
1
= 10…90%
V
1 nom
T
a
= 25 °C
3.3 / 5 V
SB
Standby Output
V
SB nom
V
SB set
dV
SB tot
P
SB nom
I
SB nom
V
SB pp
dV
SB
I
SB max
dV
SBdyn
T
rec
T
DC VSB
t
VSB rise
C
Load
Nominal Output Voltage
Output Setpoint
Accuracy
Total Regulation
Nominal Output Power
Nominal Output Current
Output Ripple Voltage
Droop
Current Limitation
Dynamic Load Regulation
Recovery Time
Start-up Time from DC
Rise Time
Capacitive Loading
0.5
∙
I
SB nom
,
T
amb
= 25°C
VSB_SEL = 1
VSB_SEL = 0
VSB_SEL = 0 / 1
-0.5
-3
16.5
16.5
5
3.3
100
67
44
5.25
3.45
-3
6
4.3
3
250
2
0.5
30
10000
VSB_SEL = 1
VSB_SEL = 0
3.3
5.0
+0.5
+3
VDC
VDC
%
V
1nom
%
V
SBnom
W
ADC
mVpp
mV
ADC
%
V
SBnom
μs
sec
ms
μF
V
i min
to
V
i max
,
0 to 100%
I
SB nom
, T
a min
to
T
a max
V
SB
= 3.3 VDC
V
SB
= 5.0 VDC
V
SB
= 3.3 VDC
V
SB
= 5.0 VDC
V
SB nom
,
I
SB nom
, 20 MHz BW (See Section 5.1)
0 - 100 %
I
SB nom
VSB_SEL = 1
VSB_SEL = 0
Δ
I
SB
= 50%
I
SB nom
,
I
SB
= 5 … 100%
I
SB nom
,
d
I
o
/d
t
= 0.5 A/μs, recovery within 1% of
V
1 nom
V
SB
= 90%
V
SB nom
V
SB
= 10…90%
V
SB nom
T
amb
= 25°C
tech.support@psbel.com
PFE1500-12-054xD
12 V
SB
Standby Output
V
SB nom
V
SB set
dV
SB tot
P
SB nom
I
SB nom
V
SB pp
d
V
SB
Nominal Output Voltage
Output Setpoint Accuracy
Total Regulation
Nominal Output Power
Nominal Output Current
Output Ripple Voltage
Droop
Current Limitation
Dynamic Load Regulation
Recovery Time
Start-Up Time from DC Input
Rise Time
Capacitive Loading
Δ
I
SB
= 50%
I
SB nom
,
I
SB
= 5 … 100%
I
SB nom
, d
I
o
/d
t
=
0.5 A/μs, recovery within 1% of
V
1 nom
0.5
∙
I
SB nom
,
T
amb
= 25 °C
-1
12
+1
+3
36
3
VDC
5
%
V
1 nom
%
V
SBnom
W
ADC
V
i min
to
V
i max
,
0 to 100%
I
SB nom
, T
a min to
T
a max
-3
V
SB nom
,
I
SB nom
, 20 MHz BW,
0 - 100 %
I
SB nom
3.3
-5
2
270
120
mVpp
mV
I
SB max
d
V
SBdyn
3.9
+5
ADC
%
V
SBnom
ms
T
rec
T
DC VSB
t
VSB rise
C
Load
V
SB
= 90%
V
SB nom
V
SB
= 10…90%
V
SB nom
T
amb
= 25 °C
4
2
20
1500
sec
ms
μF
PARAMETER
F
V
1 OV
t
OV V1
V
SB OV
t
OV VSB
I
V1 lim
I
VSB lim
I
V1 SC
t
V1 SC
T
SD
Input Fuse (L)
OV Threshold
V
1
OV Latch Off Time
V
1
OV Threshold
V
SB
OV Latch Off Time
V
SB
Over Current Limitation
V
1
Over Current Limitation
V
SB
Max Short Circuit Current
V
1
Short Circuit Regulation Time
Over Temperature on Heat Sinks
DESCRIPTION / CONDITION
Not user accessible, quick-acting (F)
MIN
13.3
NOM
60
MAX
14.5
UNIT
A
VDC
ms
VDC
ms
A
A
A
ms
°C
V1 with half load
13.3
Vsb with half load
1
14.5
1
128
3.3
V
SB
5.25
3.45
3.3
5.0
V
SB
12
V
SB
140
6
4.3
3.9
TBD
2
TBD
T
a
< 45°C
T
a
< 45°C for
V
1
< 3V
V
1
< 3 V, time until
I
V1
is limited to <
I
V1 sc
Automatic shut-down
6.1 OUTPUT GROUND
The output return path serves as power and signal ground. All output voltages and signals are referenced to these pins. To prevent
a shift in signal and voltage levels due to ground wiring voltage drop a low impedance ground plane should be used as shown in
Figure 3
. Alternatively, separated ground signals can be used as shown in
Figure 4
. In this case the two ground planes should be
connected together at the power supplies ground pins.
Figure 3. Common low impedance ground plane
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+86 755 298 85888
Europe, Middle East
+353 61 225 977
North America
+1 408 785 5200
BCD.00801_002
© 2018 Bel Power Solutions
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