The PFE600-12-054xA is a 600 Watt,
AC to DC power-factor-corrected
(PFC) power supply that converts
standard AC mains 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 PFE600-12-054xA meets
international safety standards and
displays the CE-Mark for the European
Low Voltage Directive (LVD).
Best-in-class, 80 PLUS certified
“Platinum” efficiency
Wide input voltage range: 90-264 VAC
AC input with power factor correction
Always-On 16.5 W programmable standby
output (3.3/5V)
Hot-plug capable
Parallel operation with active digital current
sharing
Full digital controls for improved
performance
High density design: 14.0 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 PSMI
and PMBus™ protocol
Overtemperature, output overvoltage and
overcurrent
protection
256 Bytes of EEPROM for user information
High performance servers
Routers
Switches
North America
+1-866.513.2839
Asia-Pacific
+86.755.29885888
Europe, Middle East
+353 61 225 977
Bel Power Solutions
152 North 3rd Street, Suite 805
San Jose, CA 95112 USA
© 2015 Bel Power Solutions, inc.
tech.support@psbel.com
BCD.00036_AH
PFE600-12-054xA
The PFE600-12-054xA AC-DC power supply is a mainly DSP controlled, highly efficient front-end. 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 operating voltage range and no derating of
output power with input voltage and temperature, the PFE600-12-054xA maximizes power availability in demanding
server, switch, and router applications. The front-end is fan cooled and ideally suited for server integration with a
matching airflow path.
The PFC stage is controlled using a state-of-the-art integrated control-IC to guarantee best efficiency and unity
power factor over a wide operating range.
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 with selectable voltage level (3.3/5 V) provides power to external power distribution
and management controllers. Its protection with an active OR-ing device provides 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 I
2
C bus. It 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 I
2
C bus.
L
V1
DC
Vsb
Filter
PFC
Buck
VsbSense+
VsbSense-
DC
N
GND
PWM
PE
Aux
Converter
FAN
EEPROM
PWM
V1Sense+
Digital
Prim
Controls
Communication Bus
Digital
Sec
Controls
V1Sense-
I2C
APS
Logic Signals
Figure 1 – PFE600-12-054xA 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.
PARAMETER
DESCRIPTION / CONDITION
Continuous
MIN
NOM
MAX
264
UNIT
VAC
Vi maxc
Maximum Input
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© 2015 Bel Power Solutions, inc.
BCD.00036_AH
PFE600-12-054xA
General Condition:
T
A
= 0… 45 °C unless otherwise noted.
PARAMETER
DESCRIPTION / CONDITION
MIN
100
Normal operating (
V
i min
to
V
i max
)
90
NOM
230
MAX
230
264
8.5
UNIT
VAC
VAC
A
rms
A
p
Hz
W/VA
87
85
85.4
92.8
94.5
94.0
20
ms
%
VAC
VAC
V
i nom
V
i
I
i max
I
i p
F
i
PF
Nominal Input Voltage
Input Voltage Ranges
Max Input Current
Inrush Current Limitation
Input Frequency
Power Factor
Turn-on Input Voltage
1)
Turn-off Input Voltage
1)
V
i min
to
V
i max
, 90°,
T
NTC
= 25 °C (see
Figure 4
)
47
50/60
40
64
V
i nom
, 50 Hz, > 0.2
I
1 nom
Ramping up
Ramping down
0.9
80
75
V
i on
V
i off
V
i nom
, 0.1∙
I
x nom
,
V
x nom
,
T
A
= 25 °C
η
Efficiency without Fan
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
After last AC zero point,
V
1
> 10.8 V,
V
SB
within regulation,
V
i
= 230 VAC,
P
x nom
T
hold
1)
Hold-up Time
The Front-End is provided with a minimum hysteresis of 3 V during turn-on and turn-off within the ranges.
4.1. INPUT FUSE
Quick-acting 12.5 A input fuses (5 x 20 mm) in series with both the L- and N-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.
4.3. INPUT UNDER-VOLTAGE
If the input voltage exceeds
V
i maxC
, the power supply remains on and may get damaged if the voltage exceeds a
tolerable level. If the sinusoidal input voltage stays below the input undervoltage lockout threshold
V
i 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. A linear IC is used giving good PFC results over wide input voltage and load ranges. The input current will
follow the shape of the input voltage. If for instance the input voltage has a trapezoidal waveform, then the current
will also show a trapezoidal waveform.
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.
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© 2015 Bel Power Solutions, inc.
BCD.00036_AH
PFE600-12-054xA
1
0.98
0.96
0.94
Power Factor
0.92
0.9
0.88
230VAC
0.86
0.84
0.82
0.8
0
100
200
300
400
500
600
115VAC
Po [W]
Figure 2 - Efficiency vs. Load current (ratio metric loading)
Figure 3 - Power factor vs. Load current
Figure 4 - Inrush current, V
in
= 230Vac, 90°
CH4:
V
in
(200V/div),
CH2:
I
in
(5 A/div)
General Condition:
T
a
= 0 … +45 °C unless otherwise noted.
PARAMETER
DESCRIPTION / CONDITION
MIN
NOM
12.0
-0.5
-1
600
50.0
150
33
0
52.5
51
46
-3
-0.6
55
55
50
+3
0.6
1
2
1
10
30000
ADC
A
V
ms
sec
ms
μF
+0.5
+1
MAX
UNIT
VDC
%
V
1nom
%
V
1nom
W
ADC
mVpp
mV
mV
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
PFE600-12-054NA
Current Limitation
PFE600-12-054RA
Current Sharing
Dynamic Load Regulation
Recovery Time
Start-up Time from AC
Rise Time
Capacitive Loading V
1
0.5
∙
I
1 nom
,
T
amb
= 25 °C
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 (See chapter 5.1)
V
i
=
V
i nom
, 0 - 100 %
I
1 nom
V
i
=V
i min…
V
i max
T
a
< 45 °C
V
i
> 110 VAC,
T
a
< 45 °C
V
i
> 90 VAC,
T
a
< 45 °C
Deviation from
I
1 tot
/ N,
I
1
> 10 A
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
P
1 nom
I
1 nom
V
1 pp
d
V
1 Load
d
V
1 Line
I
1 max
d
I
share
d
V
dyn
T
rec
t
AC V1
t
V1 rise
C
Load
V
1
= 10.8 VDC (
Figure 6
)
V
1
= 10…90%
V
1 nom
(
Figure 7
)
T
a
= 25 °C
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© 2015 Bel Power Solutions, inc.
BCD.00036_AH
PFE600-12-054xA
Standby Output V
SB
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 AC
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
-1
16.5
5
3.3
40
67
44
5.25
3.45
-3
6
4.3
3
250
2
4
20
10000
VSB_SEL = 1
VSB_SEL = 0
3.3
5.0
+0.5
+1
VDC
VDC
%
V
1nom
%
V
SBnom
W
ADC
mVpp
d
V
SB
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
VSB_SEL = 0 / 1
V
SB
= 3.3 VDC
V
SB
= 5.0 VDC
V
SB nom
,
I
SB nom
, 20 MHz BW (See chapter 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
I
SB max
d
V
SBdyn
T
rec
t
AC VSB
t
VSB rise
C
Load
V
SB
= 90%
V
SB nom
(
Figure 6
)
V
SB
= 10…90%
V
SB nom
(
Figure 7
)
T
amb
= 25 °C
5.1. OUTPUT VOLTAGE RIPPLE
The internal output capacitance at the power supply output (behind OR ring element) is minimized to prevent
disturbances during hot plug. In order to provide low output ripple voltage in the application, external capacitors
should be added close to the power supply output.
The setup of
Figure 6
has been used to evaluate suitable capacitor types. The capacitor combinations of
Table 1
and
Table 2
should be used to reduce the output ripple voltage. The ripple voltage is measured with 20 MHz BWL,
close to the external capacitors.
V
1
PFExxxx-12-054NA
PGND
V
SB
Connection board
Figure 5 - Output ripple test setup
NOTE:
Care must be taken when using ceramic capacitors with a total capacitance of 1 µF to 50 µF on output V
1
, due
to their high quality factor the output ripple voltage may be increased in certain frequency ranges due to resonance
effects.
External capacitor V1
2Pcs 47 µF/16 V/X5R/1210
1Pcs 1000 µF/16 V/Low ESR
Aluminum/ø10x20
1Pcs 270 µF/16 V/Conductive
Polymer/ø8x12
2Pcs 47 µF/16 V/X5R/1210 plus
1Pcs 270 µF Conductive Polymer OR
1Pcs 1000 µF Low ESR AlCap
dV1max
150
60
60
60
Unit
mVpp
mVpp
mVpp
mVpp
External capacitor VSB
1Pcs 10 µF/16 V/X5R/1206
2Pcs 10 µF/16 V/X5R/1206
1Pcs 47 µF/16 V/X5R/1210
2Pcs 100 µF/6.3 V/X5R/1206
dV1max
40
30
25
20
Unit
mVpp
mVpp
mVpp
mVpp
Table 2 - Suitable capacitors for V
SB
Table 1 - Suitable capacitors for V
1
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BCD.00036_AH
