PFM in a VIA Package
AC-DC Converter
PFM4914xB6M24D0yzz
S
CUNRTL S
C US
Isolated AC-DC Converter with PFC
Features & Benefits
Product Ratings
Universal input (85 264V )
AC V = 85 264V P = up to 400W
IN OUT
24V , regulated, isolated
OUT
V = 24V I = 16.67A
OUT OUT
400W maximum power
Product Description
High efficiency
Built-in EMI filtering
The PFM in a VIA package is a highly advanced 400W AC-DC
converter operating from a rectified universal AC input which
Chassis-mount or board-mount packaging options
delivers an isolated and regulated Safety Extra Low Voltage (SELV)
Always-on, self-protecting converter control architecture
24V secondary output.
SELV Output
This unique, ultra-low-profile module incorporates AC-DC
conversion, integrated filtering and transient surge protection in a
Two temperature grades including operation to 40C
chassis-mount or PCB-mount form factor.
Robust package
The PFM in a VIA package enables a versatile two-sided thermal
Versatile thermal management strategy which greatly simplifies thermal design challenges.
When combined with downstream Vicor DC-DC conversion
Safe and reliable secondary-side energy storage
components and regulators, the PFM in a VIA package allows the
High MTBF
Power Design Engineer to employ a simple, low-profile design
3
which will differentiate his end-system without compromising on
127W/in power density
cost or performance metrics.
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
Output Max
Product Package Package Package Input Range
Voltage Output Product Grade Option Field
Function Length Width Type Voltage Ratio
(Range) Current
PFM 49 14 x B6 M 24 D0 y z z
PFM = 00 = Chassis/Always On
Length in Width in B = Board VIA C = 20 to 100C
Power Factor Internal Reference 04 = Short Pin/Always On
Inches x 10 Inches x 10 V = Chassis VIA T = 40 to 100C
Module 08 = Long Pin/Always On
PFM in a VIA Package Rev 1.5
Page 1 of 25 08/2018PFM4914xB6M24D0yzz
Typical PCB-Mount Applications
J
1
24V +
24V 10A
+IN +OUT
_
D
1
+
2 x Cool-Power
~ +
3.3V 10A
_
ZVS Buck
85 - ++ +
MOV
PFM4914
264V
AC C C C C
4 1 2 3
~
+
Cool-Power
1.8V 8A
_
ZVS Buck
IN OUT
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 24V output of the PFM in a VIA package. The 24V 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 6A 250V 5 x 20mm fuseholder
F1 (mount in J1) Littelfuse 0216008.MXP 8A 250V 5 x 20mm holder
AC
D1 Fairchild GBPC1210W 12A 1000V PTH
Nichicon UVR1V153MRD 15,000F 35V 4.3A 25 x 50mm bent 90, x 3pcs
or
CDE 380LX153M035A022 15,000F 35V 5.6A 35 x 30mm snap in, x 3pcs
C1, C2, (C3) or
Sic Safco Cubisic LP A712062 22,000F 35V 5.8A 45 x 75 x 12mm rectangular, x 2pcs
or
CDE MLPE1566 22,000uF 35V 8.4A 45 x 76 x 12.5mm x 2pcs.
C4 Panasonic ECQ-U2A474ML 0.47F 275V
MOV Littelfuse TMOV20RP300E VARISTOR 10kA 300V 250 J 20mm
PFM in a VIA Package Rev 1.5
Page 2 of 25 08/2018
Filter