The PFE1500 is a 1500 W AC to DC power-factor-corrected (PFC)
power supply that converts standard AC or HVDC power 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 Series 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
Universal input voltage range: 90-264 VAC
High voltage DC input: 180-350 VDC (Option for 400 VDC)
AC input with power factor correction
Always-On standby output (model dependent):
o
Programmable 3.3 V / 5 V (16.5 W)
o
12 V @ 3 A (36 W)
Hot-plug capable
Parallel operation with active digital current sharing
Digital controls for improved performance
High density design: 35 W/in
3
Small form factor: 54.5(W) x 40.0(H) x 321.5(L) mm
I2C communication interface for control, programming and monitoring
with PMBus® protocol and PSMI Protocol
Over temperature, output over voltage and overcurrent protection
256 Bytes of EEPROM for user information
2 Status LEDs: OK and FAIL with fault signaling
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High Performance Servers
Routers
Switches
Disclaimer: PMBus is a registered trademark of SMIF, Inc.
2
PFE1500 Series
Product Family
PFE Front-Ends
1
Power Level
1500 W
Dash
V1 Output
12 V
Dash
Width
54 mm
Airflow
N: Normal
1
R: Reverse
2
Input
3
A: C14 Socket
AC: C16 Socket
AH: HVDC Socket
2
3
“N” Normal Airflow from Output connector to Input AC socket
Ordering PN: PFE1500-12-054NA for C14 AC input connector, input range is 180 VDC ~ 350 VDC and 90 VAC ~ 264 VAC
Ordering PN: PFE1500-12-054NAC for C16 AC input connector, input range is 180 VDC ~ 350 VDC and 90 VAC ~ 264 VAC
Ordering PN: PFE1500-12-054NAH for both AC and HVDC (RF-203-D-1.0) input connector, input range is 180 ~ 400 VDC and 90 ~ 264 VAC
“R” Reverse Airflow from Input AC socket to Output connector
Ordering PN: PFE1500-12-054RA for C14 AC input connector, input range is 180 VDC ~ 350 VDC and 90 VAC ~ 264 VAC
Ordering PN: PFE1500-12-054RAC for C16 AC input connector, input range is 180 VDC ~ 350 VDC and 90 VAC ~ 264 VAC
Ordering PN: PFE1500-12-054RAH for both AC and HVDC (RF-203-D-1.0) input connector, input range is 180 ~ 400 VDC and 90 ~ 264 VAC
For difference of the AC socket and mechanical outline refer to section 13.
S412
Product Family
PFE Front-Ends
4
Power Level
1500 W
Dash
V1 Output
12 V
Airflow
N: Normal
4
Input
5
A: C14 Socket
AC: C16 Socket
AH: HVDC Socket
VSB Output
12VSB
5
“N” Normal Airflow from Output connector to Input AC socket
Ordering PN: PFE1500-12NAS412 for C14 AC input connector, input range is 180 VDC ~ 350 VDC and 90 VAC ~ 264 VAC
Ordering PN: PFE1500-12NACS412 for C16 AC input connector, input range is 180 VDC ~ 350 VDC and 90 VAC ~ 264 VAC
Ordering PN: PFE1500-12NAHS412 for both AC and HVDC (RF-203-D-1.0) input connector, input range is 180 VDC ~ 400 VDC
and 90 VAC ~ 264 VAC
For difference of the AC socket and mechanical outline refer to section 13.
tech.support@psbel.com
PFE1500 Series
3
The PFE1500 Series AC/DC power supply is combination of analog and DSP control, highly efficient front-end power supply. It
incorporates resonance-soft-switching technology and interleaved power trains to reduce component stresses, providing increased
system reliability and very high efficiency. With a wide input operational voltage range and minimal derating of output power with
input voltage and temperature, the PFE1500 power supply 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 paths. The PFC stage
is an analogue solution; MCU is used to communicate with DSP chip on secondary side. The DC/DC stage uses soft switching
resonant techniques in conjunction with synchronous rectification. 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 front-panel LEDs.
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. 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. PFE1500 Series Block Diagram
Stresses in excess of the absolute maximum ratings may cause performance degradation, adversely affect long-term reliability, and
cause permanent damage to the supply.
Vi maxc
Maximum Input
Continuous
264
VAC
Asia-Pacific
+86 755 298 85888
Europe, Middle East
+353 61 225 977
North America
+1 408 785 5200
BCD.00733_AE
© 2018 Bel Power Solutions & Protection
4
PFE1500 Series
General Condition: T
A
= 0… 45°C
unless otherwise specified.
100
240
350
1
264
350
180
15
VAC
VDC
VAC
VDC
VAC
A
rms
A
p
Hz
W/VA
V
i nom
V
i
Nominal Input Voltage
200
Input Voltage Ranges
Normal operating (
V
i min
to
V
i max
)
90
180
V
i red
I
i max
I
i p
F
i
PF
V
i on
Derating Input Voltage Range
Max Input Current
Inrush Current Limitation
Input Frequency
Power Factor
Turn-on Input Voltage
2
See Figure 7A and Figure 7B
90
V
i min
to
V
i max
,
T
NTC
= 25°C
(Figure 4)
47
50/60
40
64
V
i nom
, 50 Hz, > 0.3
I
1 nom
Ramping up
0.96
80
169
84
174
80
171
90
92
94
92
89
180
85
176
VAC
VDC
VAC
VDC
V
i off
75
Turn-off Input Voltage
Ramping down
166
V
i nom
, 0.1∙
I
x nom
,
V
x nom
,
T
A
= 25°C
Efficiency without Fan at AC
input
η
Efficiency without Fan at DC
input
V
i nom
, 0.2∙
I
x nom
,
V
x nom
,
T
A
= 25°C
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
i nom=336VDC
, 0.1∙
I
x nom
,
V
x nom
,
T
A
= 25°C
V
i nom=336VDC
, 0.2∙
I
x nom
,
V
x nom
,
T
A
= 25°C
V
i nom=336VDC
, 0.5∙
I
x nom
,
V
x nom
,
T
A
= 25°C
V
i nom=336VDC
,
I
x nom
,
V
x nom
,
T
A
= 25°C
After last AC zero point to
V
1
≥
10.8 V, V
SB
within
regulation,
V
i
= 230 VAC,
P
x nom
%
89
92
93.5
92
10
ms
T
hold
Hold-up Time
4.1 INPUT FUSE
Quick-acting 16 A input fuse (5 x 20 mm) in series the L line inside the power supply protect against severe defects. The fuses
are not accessible from the outside and are therefore not serviceable parts.
4.2 INRUSH CURRENT
The AC-DC power supply exhibits an X-capacitance of only 3.2
µF,
resulting in a low and short peak current, when the supply
is connected to the mains. The internal bulk capacitor will be charged through an NTC which will limit the inrush current.
NOTE:
Do not repeat plug-in / out operations within a short time, or else the internal in-rush current limiting device (NTC) may
not sufficiently cool down and excessive inrush current or component failure(s) may result.
1
2
For PFE1500-12-054NAH, PFE1500-12-054RAH and PFE1500-12NAHS412, normal DC operation input range is 200 VDC to 380 VDC
and Input range is 180 VDC to 400 VDC; input AC range is 90 VAC ~ 264 VAC.
The Front-End is provided with a minimum hysteresis of 3 V during turn-on and turn-off within the ranges.
tech.support@psbel.com
PFE1500 Series
4.3 INPUT UNDER-VOLTAGE
5
If the sinusoidal input voltage stays below the input under voltage lockout threshold Vi on, the supply will be inhibited. Once the
input voltage returns within the normal operating range, the supply will return to normal operation again.
4.4 POWER FACTOR CORRECTION
Power factor correction (PFC) is achieved by controlling the input current waveform synchronously with the input voltage. An
analog controller is implemented giving outstanding PFC results over a wide input voltage and load ranges. The input current
will follow the shape of the input voltage.
4.5 EFFICIENCY
High efficiency (see
Figure 2
) is achieved by using state-of-the-art silicon power devices in conjunction with soft-transition
topologies minimizing switching losses and a full digital control scheme. Synchronous rectifiers on the output reduce the losses
in the high current output path. The speed of the fan is digitally controlled to keep all components at an optimal operating
temperature regardless of the ambient temperature and load conditions.
Figure 2. Efficiency vs. Load current (ratio metric loading)
Figure 3. Power factor vs. Load current
Figure 4. Inrush current, Vin = 264 VAC, 90°, CH1: Vin (200V/div), CH2: Iin (10A/div)
Asia-Pacific
+86 755 298 85888
Europe, Middle East
+353 61 225 977
North America
+1 408 785 5200
BCD.00733_AE
© 2018 Bel Power Solutions & Protection
FPGA/CPLD
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