PFM™ in a VIA™ Package
AC-DC Converter
PFM4914xB6M48D0yzz
®
C
S
US
C
NRTL
US
Isolated AC-DC Converter with PFC
Features & Benefits
Product Ratings
• Universal input (85 – 264VAC)
VIN = 85 – 264V
POUT = up to 400W
VOUT = 48V
IOUT = 8.3A
• 48VOUT, regulated, isolated
• 400W maximum power
Product Description
• High efficiency
The PFM in a VIA package is a highly advanced 400W AC-DC
converter operating from a rectified universal AC input which
delivers an isolated and regulated Safety Extra Low Voltage (SELV)
48V secondary output.
• Built-in EMI filtering
• Chassis-mount or board-mount packaging options
• Always-on, self-protecting converter control architecture
This unique, ultra-low-profile module incorporates AC-DC
conversion, integrated filtering and transient surge protection in a
chassis-mount or PCB-mount form factor.
• SELV Output
• Two temperature grades including operation to –40°C
• Robust package
The PFM in a VIA package enables a versatile two-sided thermal
strategy which greatly simplifies thermal design challenges.
• Versatile thermal management
When combined with downstream Vicor DC-DC conversion
components and regulators, the PFM in a VIA package allows the
Power Design Engineer to employ a simple, low-profile design
which will differentiate his end-system without compromising on
cost or performance metrics.
• Safe and reliable secondary-side energy storage
• High MTBF
• 127W/in3 power density
• 4914 package
• External rectification and transient protection required
Typical Applications
• Small-cell base stations
• Telecom switching equipment
• LED lighting
• Industrial power systems
Size:
4.91 x 1.40 x 0.37in
[124.75 x 35.54 x 9.40mm]
Part Ordering Information
Product
Function
Package
Length
Package
Width
Package
Type
Input
Voltage
Range
Ratio
Output
Voltage
(Range)
Max
Output
Current
Product Grade
PFM
49
14
x
B6
M
48
D0
y
PFM =
Power Factor
Module
Length in
Inches x 10
Width in
Inches x 10
B = Board VIA
V = Chassis VIA
PFM™ in a VIA™ Package
Page 1 of 25
Internal Reference
Rev 1.5
08/2018
C = –20 to 100°C
T = –40 to 100°C
Option Field
z
z
00 = Chassis/Always On
04 = Short Pin/Always On
08 = Long Pin/Always On
PFM4914xB6M48D0yzz
Typical PCB-Mount Applications
J1
Filter
85 264VAC
C4
+OUT
+IN
D1
~
+
~
–
48 V
+
PFM4914
MOV
PRM®/VTM®
+
_ 3.3 V 10 A
PRM®/VTM®
+
_ 1.8 V 80A
C1
–OUT
–IN
+
_ 48 V 3 A
The PCB terminal option allows mounting on an industry standard printed circuit board, with two different pin lengths. Vicor offers a
variety of downstream DC-DC converters driven by the 48V output of the PFM in a VIA package. The 48V output is usable directly by loads
that are tolerant of the PFC line ripple, such as fans, motors, relays, and some types of lighting. Use downstream DC-DC point-of-load
converters where more precise regulation is required.
Parts List for Typical PCB-Mount Applications
J1
Delta 06AR2 EMI Filter Entry Module, C14 6 A 250V 5 x 20mm fuseholder
F1 (mount in J1)
Littelfuse 0216008.MXP 8A 250VAC 5 x 20mm holder
D1
Fairchild GBPC1210W 1A 1000V PTH
Nichicon UVR1J472MRD 4700µF 63V 3.4A 22 x 50mm bent 90° x 2pcs
or
C1
CDE 380LX472M063K022 4700µF 63V 4.9A 30 x 30mm snap x 2pcs
or
Sic Safco Cubisic LP A712121 10,000µF 63V 6.4A 45 x 75 x 12mm rectangular
or
CDE MLPGE1571 6800uF 63V 5.2A 45 x 50 x 12.5mm, 1 or 2pcs.
C4
Panasonic ECQ-U2A474ML 0.47µF 275V
MOV
Littelfuse TMOV20RP300E VARISTOR 10kA 300V 250J 20mm
PFM™ in a VIA™ Package
Page 2 of 25
Rev 1.5
08/2018
PFM4914xB6M48D0yzz
Typical Chassis-Mount Applications
J1
~
Filter
85 264VAC
C4
48V
+OUT
+IN
D1
+
Fan
PFM4914
MOV
~
C1
–
–OUT
–IN
8
Relays
8
16
Dispensors
Controller
Coin Box
The PFM in a VIA package is available in chassis-mount option, saving the cost of a PCB and allowing access to both sides of the power
supply for cooling. The parts list below minimizes the number of interconnects required between necessary components, and selects
components with terminals traditionally used for point-to-point chassis wiring.
Parts List for Typical Chassis-Mount Applications
J1
Delta 06AR2 EMI Filter Entry Module, C14 6A 250V 5 x 20mm fuseholder
F1 (mount in J1)
Littelfuse 0216008.MXP 8A 250VAC 5 x 20mm holder
D1
Fairchild GBPC1210FS 12A 1000V 0.25” QC TERMINAL
C1
UCC E32D630HPN103MA67M 10,000µF, 63V 7.4A, 35 x 67mm screw terminal
or
Kemet ALS30A103DE063, 10,000µF 63V 10.8A 36 x 84mm screw terminal
C4
Panasonic ECQ-U2A474ML 0.47µF 275V
MOV
Littelfuse TMOV20RP300E VARISTOR 10kA 300V 250 J 20mm
PFM™ in a VIA™ Package
Page 3 of 25
Rev 1.5
08/2018
PFM4914xB6M48D0yzz
Pin Configuration
TOP VIEW
+IN 1
3
–IN 2
4 –OUT
+OUT
PFM4914 VIA - Chassis Mount - Terminals Up
TOP VIEW
–IN 2
4
+IN 1
3 +OUT
–OUT
PFM4914 VIA - PCB Mount - Pins Down
Please note that these Pin drawings are not to scale.
Pin Descriptions
Pin Number
Signal Name
Type
1
+IN
INPUT POWER
2
–IN
3
+OUT
OUTPUT POWER
Positive output power terminal
4
–OUT
OUTPUT POWER
RETURN
Negative output power terminal
PFM™ in a VIA™ Package
Page 4 of 25
Function
Positive input power terminal
INPUT POWER RETURN Negative input power terminal
Rev 1.5
08/2018
PFM4914xB6M48D0yzz
Absolute Maximum Ratings
The absolute maximum ratings below are stress ratings only. Operation at or beyond these maximum ratings can cause permanent damage to the device.
Parameter
Comments
Min
Max
Unit
Input Voltage +IN to –IN
1ms max
0
600
VPK
Input Voltage (+IN to –IN)
Continuous, Rectified
0
275
VRMS
Output Voltage (+OUT to –OUT)
–0.5
58
VDC
Output Current
0.0
12.4
A
4 [0.45]
N.m [in.lbs]
Screw Torque
4 mounting, 2 input, 2 output
Operating Internal Temperature
T-Grade
–40
125
°C
Storage Temperature
T-Grade
–65
125
°C
Dielectric Withstand *
See note below
Input-Case
Basic Insulation
2121
VDC
Input-Output
Reinforced Insulation
(Internal ChiP™ tested at 4242VDC prior to assembly.)
2121
VDC
Output-Case
Functional Insulation
707
VDC
10.00
500
8.00
400
6.00
300
4.00
200
2.00
100
0.00
0
-60
-40
-20
0
20
40
60
Case Temperature (°C)
Current
Safe operating area
PFM™ in a VIA™ Package
Page 5 of 25
Rev 1.5
08/2018
Power
80
100
Output Power (W)
Output Current (A)
* Please see Dielectric Withstand section. See page 19.
PFM4914xB6M48D0yzz
Electrical Specifications
Specifications apply over all line and load conditions, 50Hz and 60Hz line frequencies, TINT = 25°C, unless otherwise noted; boldface specifications apply over
the temperature range of the specified product grade. COUT is 10,000µF ±20% unless otherwise specified.
Attribute
Symbol
Conditions / Notes
Min
Typ
Max
Unit
264
VRMS
600
V
148
VRMS
Power Input Specification
Input Voltage Range,
Continuous Operation
VIN
Input Voltage Range,
Transient, Non-Operational (Peak)
VIN
Input Voltage Cell Reconfiguration
Low-to-High Threshold
VIN-CR+
Input Voltage Cell Reconfiguration
High-to-Low Threshold
VIN-CR–
85
1ms
145
132
Input Current (Peak)
IINRP
Source Line Frequency Range
fline
Power Factor
PF
Input power >200W
Input Inductance, Maximum
LIN
Differential mode inductance, common-mode
inductance may be higher. See section “Source
Inductance Considerations” on page 16.
Input Capacitance, Maximum
CIN
After bridge rectifier, between +IN and –IN
135
See Figure 8, start-up waveforms
47
VRMS
12
A
63
Hz
0.96
1
mH
1.5
µF
7
W
50
V
No Load Specification
Input Power – No Load, Maximum
PNL
Power Output Specification
Output Voltage Set Point
Output Voltage, No Load
VOUT
VOUT-NL
VIN = 230VRMS, 100% load
46
Over all operating steady state line conditions.
Wider tolerance valid up to 50W output due to line
cycle skipping.
42
52
V
30
57.6
V
Output Voltage Range (Transient)
VOUT
Non-faulting abnormal line and
load transient conditions
Output Power
POUT
See SOA on Page 5
VIN = 230V, full load, exclusive of input rectifier losses
Efficiency
η
48
400
90.5
92
W
%
85V < VIN < 264V, full load, exclusive of
input rectifier losses
90
%
85V < VIN < 264V, 75% load,
exclusive of input rectifier losses
90
%
Output Voltage Ripple,
Switching Frequency
VOUT-PP-HF
Over all operating steady-state line and load
conditions, 20MHz BW, measured at output, Figure 5
200
2000
mV
Output Voltage Ripple
Line Frequency
VOUT-PP-LF
Over all operating steady-state line and load
conditions, 20MHz BW
3.0
7.0
V
Output Capacitance (External)
COUT-EXT
Allows for ±20% capacitor tolerance
15000
µF
Output Turn-On Delay
TON
From VIN applied
500
1000
ms
Start-Up Set-Point Aquisition Time
TSS
Full load
500
1000
ms
TCR
Full load
5.5
11
ms
20
%
Cell Reconfiguration Response Time
Voltage Deviation (Transient)
%VOUT-TRANS
6800
–37.5
Recovery Time
TTRANS
600
ms
Line Regulation
%VOUT-LINE
Full load
3
%
Load Regulation
%VOUT-LOAD
10% to 100% load
3
%
SOA
8.33
A
20ms duration, average power ≤POUT, max
12.5
A
Output Current (Continuous)
Output Current (Transient)
PFM™ in a VIA™ Package
Page 6 of 25
IOUT
IOUT-PK
300
Rev 1.5
08/2018
PFM4914xB6M48D0yzz
Electrical Specifications (Cont.)
Specifications apply over all line and load conditions, 50Hz and 60Hz line frequencies, TINT = 25°C, unless otherwise noted; boldface specifications apply over
the temperature range of the specified product grade. COUT is 10,000µF ±20% unless otherwise specified.
Attribute
Symbol
Conditions / Notes
Min
Typ
Max
Unit
74
83
VRMS
Powertrain Protections
Input Undervoltage Turn-On
VIN-UVLO+
Input Undervoltage Turn-Off
VIN-UVLO–
Input Overvoltage Turn-On
VIN-OVLO–
Input Overvoltage Turn-Off
VIN-OVLO+
Output Overvoltage Threshold
VOUT-OVLO+
Upper Start / Restart Temperature
Threshold (Case)
TCASE-OTP–
See Timing Diagram
See Timing Diagram
Instantaneous, latched shutdown
65
71
VRMS
265
270
VRMS
58
273
287
VRMS
61
64
V
100
°C
Overtemperature Shutdown
Threshold (Internal)
TINT-OTP+
125
°C
Overtemperature Shutdown
Threshold (Case)
TCASE-OTP+
110
°C
Overcurrent Blanking Time
TOC
Based on line frequency
Input Overvoltage Response Time
TPOVP
Input Undervoltage Response Time
TUVLO
Based on line frequency
Output Overvoltage Response Time
TSOVP
400
460
550
ms
40
ms
200
ms
Powertrain on
30
ms
Short Circuit Response Time
TSC
Powertrain on, operational state
270
µs
Fault Retry Delay Time
TOFF
See Timing Diagram
10
s
Output Power Limit
PPROT
50% overload for 20ms typ allowed
PFM™ in a VIA™ Package
Page 7 of 25
Rev 1.5
08/2018
400
W
PFM™ in a VIA™ Package
Page 8 of 25
Output
Input
Rev 1.5
08/2018
ILOAD
VOUT
EN
VIN-RMS
tON
≈30VRMS
VIN-UVLO+
1
Input Power
On & UV
Turn-on
VOUT-NL
VOUT
2
3
10%
Full
Load
Load
Applied Applied
tEN-DIS
4
EN
Forced
Low
tON
5
EN
High
tSS
VIN-CR+
tPOVP
tON
tSS
VIN-OVLO-
7
8
Input
Input
OV
OV
Turn-off Turn-on
VIN-OVLO+
tCR
6
Range
Change
LO to HI
tCR
VIN-CR-
9
Range
Change
HI to LO
tUVLO
VIN-UVLO-
11
12
Load Input Power
Step
Off & UV
Turn-off
tTRANS
(2 places)
10
Load
Dump
PFM4914xB6M48D0yzz
Timing Diagram
PFM™ in a VIA™ Package
Page 9 of 25
Output
Input
Rev 1.5
08/2018
ILOAD
VOUT
EN
VIN-RMS
tSS
tON
VIN-UVLO+
13
Input Power
ON & UV
Turn-on
tOFF+tON
tOC
tOC
14
Output OC
Fault
tOFF+tON
tOC
15
Output
OC
Recovery
))
tSOVP
))
))
*
))
))
))
))
))
))
VOUT-OVLO+
*
18
Output
OVP
Fault
))
tON
17
Toggle EN
(Output
OVP
Recovery)
))
))
16
Output
OVP
Fault
VIN-UVLO+
tON
19
Recycle
Input
Power
(Output
OVP
Recovery)
tSC
tOFF+tON
20
Output
SC
Fault
tOFF+tON
21
Output
SC
Recovery
≥tOFF+tON
VIN-UVLO-
22
23
24
OT Fault
Line
Input
&
Drop-Out Power
Recovery
Off & UV
Turn-off
PFM4914xB6M48D0yzz
Timing Diagram (Cont.)
PFM4914xB6M48D0yzz
Application Characteristics
Typical characteristics at 20°C with 10,000µF bulk electrolytic capacitor unless otherwise noted.
No Load Power Dissipation (W)
93.2
Efficiency (%)
93.0
92.8
92.6
92.4
92.2
92.0
91.8
91.6
85
105
125
145
165
185
205
225
245
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
85
265
105
125
Figure 1 — Full-load efficiency vs. line voltage
185
205
225
245
265
1.00
0.98
700
0.96
Power Factor
Current (mA)
165
Figure 2 — Typical no-load power dissipation vs. VIN,
module enabled
800
600
500
400
300
0.94
0.92
0.90
0.88
0.86
200
0.84
100
0.82
0
145
Input Line Voltage
Input Line Voltage
0.80
0
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39
230V, 50Hz
1/3x EN61000-3-2, Class A
100
200
300
400
Output Power (W)
EN61000-3-2, Class D
VIN:
120V/60Hz
230V/50Hz
100V/50Hz
Figure 3 — Typical input current harmonics, full load vs. VIN using
typical applications circuit on pages 2 & 3
Figure 4 — Typical power factor vs. VIN and Iout using
typical applications circuit on pages 2 & 3
Figure 5 — Typical switching frequency output voltage ripple
waveform, TCASE = 30ºC, VIN = 230V, IOUT = 8.3A,
no external ceramic capacitance, 20MHz BW
Figure 6 — Typical line frequency output voltage ripple
waveform, TCASE = 30ºC, VIN = 230V, IOUT = 8.3A,
COUT = 10,000µF. 20MHz BW
PFM™ in a VIA™ Package
Rev 1.5
Page 10 of 25 08/2018
PFM4914xB6M48D0yzz
Application Characteristics (Cont.)
Typical characteristics at 20°C with 10,000µF bulk electrolytic capacitor unless otherwise noted.
Figure 7 — Typical output voltage transient response,
TCASE = 30ºC, VIN = 230V, IOUT = 8.3A, 2.1A
COUT = 10,000µF
Figure 8 — Typical start-up waveform, application of VIN ,
RLOAD = 5.7Ω, COUT = 10,000µF
Figure 9 — 230V, 120V range change transient response 16.7A,
IOUT = 8.3A, COUT = 10,000µF
Figure 10 — Line drop out, 230V 50Hz, 0° phase, IOUT = 8.3A,
COUT = 10,000µF
Figure 11 — Line drop out, 230V 50Hz, 90° phase, VIN = 230V,
50Hz, IOUT = 8.3A, COUT = 10,000µF
Figure 12 — Typical line current waveform, VIN = 120V,
60Hz IOUT = 8.3A, Cout = 10,000µF
PFM™ in a VIA™ Package
Rev 1.5
Page 11 of 25 08/2018
PFM4914xB6M48D0yzz
Application Characteristics (Cont.)
Typical characteristics at 20°C with 10,000µF bulk electrolytic capacitor unless otherwise noted.
Att 20 dB
Marker 2 [T1]
61.80 dB V
999.00000000 kHz
INPUT 2
100
Det
ResBW
Meas T
1 MHz
MA Trd
9 kHz
dB V
10 MHz
2 [T1]
61.80 dB V
1 [T1]
90
80
55022RED
20 ms Unit
ResBW
INPUT 2
100
Meas T
1 MHz
MA Trd
9 kHz
55022RED
20 ms Unit
dB V
10 MHz
999.00000000 kHz
76.61 dB V
198.00000000 kHz SGL
22QPA
1
90
SGL
80
1MA
22QPA
1MA
70
70
2
22QPB
60
50
40
40
30
30
17.Mar 2015 08:49
150 kHz
Date:
20
30 MHz
17.MAR.2015
Att 20 dB
Marker 2 [T1]
INPUT 2
100
61.57 dB V
978.00000000 kHz
1 MHz
Det
ResBW
Meas T
MA Trd
9 kHz
dB V
10 MHz
2 [T1]
61.57 dB V
Att 20 dB
14:59:08
Marker 1 [T1]
INPUT 2
100
57.24 dB V
158.00000000 kHz
1 MHz
978.00000000 kHz
73.94 dB V
230.00000000 kHz SGL
22QPA
1
80
1MA
Det
ResBW
Meas T
MA Trd
9 kHz
55022RED
20 ms Unit
dB V
10 MHz
1 [T1]
57.24 dB V
2 [T1]
90
158.00000000 kHz
54.30 dB V
19.90300000 MHz SGL
22QPA
1MA
70
70
2
22QPB
60
22QPB
60 1
50
50
40
40
2
30
30
20
30 MHz
20.MAR.2015
Figure 14 — Typical EMI spectrum, peak scan, 90% load,
115VIN, COUT = 10,000µF using typical chassis‑mount
application circuit
55022RED
20 ms Unit
1 [T1]
90
20.Mar 2015 14:59
150 kHz
Date:
08:49:31
Figure 13 — Typical EMI spectrum, peak scan, 90% load, 115VIN,
COUT = 10,000µF, no Inlet filter, C4
80
22QPB
60
50
20
Det
Att 20 dB
17.Mar 2015 09:21
150 kHz
Date:
17.MAR.2015
20
30 MHz
Date:
09:21:58
Figure 15 — Typical EMI Spectrum, peak scan, 90% load, 230VIN,
COUT = 10,000µF, no Inlet filter, C4
20.Mar 2015 15:36
150 kHz
20.MAR.2015
30 MHz
15:36:59
Figure 16 — Typical EMI Spectrum, peak scan, 90% load,
230VIN, COUT = 10,000µF using typical chassis‑mount
application circuit
PFM™ in a VIA™ Package
Rev 1.5
Page 12 of 25 08/2018
PFM4914xB6M48D0yzz
Application Characteristics (Cont.)
45
90
40
88
35
50
92
45
90
40
88
35
86
30
84
25
82
20
15
86
30
84
25
82
20
80
15
80
78
10
78
0
1
2
VIN:
3
4
5
6
Load Current (A)
7
8
85V
115V
230V
Eff
85V
115V
230V
P Diss
9
45
90
40
88
35
86
30
84
25
82
20
80
15
Power Dissipation (W)
50
78
10
VIN:
2
3
4
5
6
Load Current (A)
7
8
85V
115V
230V
Eff
85V
115V
230V
P Diss
2
3
4
5
6
Load Current (A)
7
8
85V
115V
230V
Eff
85V
115V
230V
P Diss
9
Figure 18 — VIN to VOUT efficiency and power dissipation
vs. VIN and IOUT, TCASE = 20ºC
92
1
1
VIN:
94
0
10
0
Figure 17 — VIN to VOUT efficiency and power dissipation
vs. VIN and IOUT, TCASE = –40ºC
Efficiency (%)
94
9
Figure 19 — VIN to VOUT efficiency and power dissipation
vs. VIN and IOUT, TCASE = 85ºC
PFM™ in a VIA™ Package
Rev 1.5
Page 13 of 25 08/2018
Power Dissipation (W)
50
92
Efficiency (%)
94
Power Dissipation (W)
Efficiency (%)
Typical characteristics at 20°C with 10,000µF bulk electrolytic capacitor unless otherwise noted.
PFM4914xB6M48D0yzz
General Characteristics
Specifications apply over all line and load conditions, 50Hz and 60Hz line frequencies, TC = 25°C, unless otherwise noted; boldface specifications apply over
the temperature range of the specified Product Grade.
Attribute
Symbol
Conditions / Notes
Min
Typ
Max
Unit
Mechanical
Length
L
124.49 [4.90]
124.75 [4.91]
125.0 [4.92]
mm [in]
Width
W
35.29 [1.39]
35.54 [1.40]
35.79 [1.41]
mm [in]
Height
H
9.019 [0.355]
9.40 [0.37]
9.781 [0.385]
mm [in]
Volume
Vol
Weight
W
Without heat sink
42.0 [2.56]
cm3 [in3]
156 [5.5]
g [oz]
Pin Material
C145 copper, half hard
Underplate
Low-stress ductile nickel
50
100
µin
Palladium
0.8
6
µin
Soft Gold
0.12
2
µin
C-Grade, see derating curve in SOA
–20
100
°C
T-Grade, see derating curve in SOA
–40
100
°C
Pin Finish
Thermal
Operating Case Temperature
TC
Thermal Resistance, Pin Side
θINT_PIN_SIDE
1.3
°C/W
θINT_NON_PIN_SIDE
1.7
°C/W
θHOU
0.57
°C/W
32
J/K
Thermal Resistance, Non-Pin Side
Thermal Resistance, Housing
Shell Thermal Capacity
Thermal Design
See Thermal Considerations on Page 18
Assembly
ESD Rating
ESDHBM
Human Body Model,
JEDEC JESD 22-A114C.01
ESDMM
Machine Model,
JEDEC JESD 22-A115B
N/A
ESDCDM
Charged Device Model,
JEDEC JESD 22-C101D
200
1,000
V
Safety
cTÜVus; EN 60950-1
Agency Approvals / Standards
cURus; UL 60950-1
CE Marked for Low Voltage Directive and RoHS Recast Directive, as applicable
Touch Current measured in accordance
with IEC 60990 using measuring network
Figure 3 (PFM in a VIA package only)
PFM™ in a VIA™ Package
Rev 1.5
Page 14 of 25 08/2018
0.5
mA
PFM4914xB6M48D0yzz
General Characteristics (Cont.)
Specifications apply over all line and load conditions, 50Hz and 60Hz line frequencies, TC = 25°C, unless otherwise noted; boldface specifications apply over
the temperature range of the specified Product Grade.
Attribute
Symbol
Conditions / Notes
Min
Typ
Max
Unit
EMI/EMC Compliance (pending)
FCC Part 15, EN55022, CISPR22: 2006 +
A1: 2007, Conducted Emissions
Class B Limits - with –OUT
connected to GND
EN61000-3-2: 2009,
Harmonic Current Emissions
Class A
EN61000-3-3: 2005,
Voltage Changes & Flicker
PST
