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VIA PFM™, AC-DC Converter with PFC
Universal Input, 24 V or 48 V Regulated, Isolated Output
For use in: Small Cell Base Station, Telecom Switching Equipment, LED Lighting,
Test and Measurement Equipment, 200 - 400 W Industrial Power Systems
and Office Equipment
Value Proposition
Today's AC-DC power systems need to be small, reliable,
easily-to-use, and cost competitive while achieving modern
system requirements for efficiency, power factor, and
conducted and radiated emissions. Vicor has solved these
difficult challenges by combining advanced power conversion
engines and electromagnetic compatibility functions inside
the thermally adept and ultra-low-profile VIA package.
Board mount
Features and Benefits
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Small Size, low profile:
Chassis mount
Eliminates constraints of size or height in a design
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Thermally adept VIA housing:
Enables easy thermal design, possibly eliminating the need for a fan;
chassis mount version enables system chassis to be part of thermal design
Product Description
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Integrated filtering, transient protection, inrush protection:
Simplifies EMI and surge protection design, faster time to market
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High efficiency of
up to 92%:
Excellent efficiency for such a small and low profile device
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Active Power Factor Correction (PFC) exceeding 0.95 at most line/
load conditions (filter dependent):
Meets all agency standards
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400 W available over entire input voltage range:
No need to design different systems for different parts of the world
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Chassis mount or PCB mount packaging options:
Provides design flexibility, enables multiplicity of thermal design strategies
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Small and simple “wall-plug-to-PoL design with Vicor PoL buck, and buck-boost regulator products:
Simple, modular complete solution to achieve benchmark performance
from wall-plug to Point of load
The VIA PFM is a highly advanced 400 W AC-DC converter
operating from a rectified universal AC input which delivers
an isolated and regulated Safety Extra Low Voltage (SELV)
24 V or 48 V secondary output. This unique, ultra-low profile
module incorporates AC-DC conversion, integrated filtering
and transient surge protection in chassis mount or PCB
mount form factor. The VIA PFM enables a versatile two sided
thermal strategy which greatly simplifies thermal design
challenges. When combined with downstream Vicor DC-DC
conversion components and regulators, the VIA PFM 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.
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Easy-to-use solution requires only a few external components (rectifier, fuse, MOV, hold-up caps):
Allows for design flexibility
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24 V version operates with ~27 mF of 35 V hold-up capacitors
48 V version operates with ~6.8 mF of 63 V hold-up capacitors
(application dependent): Small, flexible design
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Voltage, current, and temperature protections:
Protects the VIA PFM unit and system
Part Numbering
Product
Function
P
F
Package Package
Length
Width
M
PFM = Power
Factor Module
4
9
Inches
x 10
1
Package
Type
4
Inches
x 10
V
B = Board VIA
V = Chassis VIA
Max Input
Voltage
B
6
B6 = 85–264 Vac
Range
Ratio
M
M = 3.1
Max Output
Voltage (Range)
2
4
24 = 24 Vout
48 = 48 Vout
Max Output
Current/Power
D
0
D0 = 400 W
vicorpower.com
Product
Grade
C
C = -20 to 100°C
T = -40 to 100°C
Option Field
0
0
00 = Chassis Always-on
04 = Short Pin/Always-on
08 = Long Pin/Always-on
Rev 1.2
6/2015
Typical Application, 24 VOUT VIA PFMs
48 V Output
AC
85 – 264
Bridge
Rectifier
24 V Output
24 V
PFM
PFM
PFM
Cool-Power
ZVS Buck
LOAD 1
Cool-Power
ZVS Buck
LOAD 2
Cool-Power
ZVS Buck
LOAD 3
Cool-Power
ZVS Buck
Cool-Power
ZVS Buck
LOAD 4
LOAD 5
Mechanical Diagram (Chassis mount version shown)
A
B
.152
3.861
THRU
TYP
1
.11
2.90
3
1.171
29.750
1.40
35.54
4
2
USE TYCO LUG #696049-1 OR
EQUIV. FOR OUTPUT CONNECTION
PRODUCTS: 2361, 2392 AND 9223.
USE TYCO LUG #2-36161-6 OR
EQUIV. FOR OUTPUT CONNECTION
PRODUCTS: 2223, 3623, 4623, AND 6123.
USE TYCO LUG #324159 OR
EQUIV. FOR INPUT CONNECTION
ALL PRODUCTS
.37
9.30
C
PRODUCT
VIA PFM
DIM 'A'
2.17 [55.15]
DIM 'B'
1.757 [44.625]
DIM 'C'
4.91 [124.77]
vicorpower.com
Rev 1.2
6/2015
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