Issue Date:
2010-02-04
Page 1 of 7
Report Reference #
E135493-A6-UL
2012-03-16
UL TEST REPORT AND PROCEDURE
Standard:
Certification Type:
CCN:
UL 60950-1, 2nd Edition, 2007-03-27 (Information Technology
Equipment - Safety - Part 1: General Requirements)
CSA C22.2 No. 60950-1-07, 2nd Edition, 2007-03 (Information
Technology Equipment - Safety - Part 1: General Requirements)
Component Recognition
QQGQ2, QQGQ8 (Power Supplies for Information Technology
Equipment Including Electrical Business Equipment)
Product:
Model:
DC/DC Converter
PRM Series
Rating:
See Miscellaneous Enclosure for model nomenclature.
Input:45V
Output: 48V Max
Power: 600W Max.
Applicant Name and Address:
VICOR CORP
25 FRONTAGE RD
ANDOVER MA 01810
UNITED STATES
This is to certify that representative samples of the products covered by this Test Report have been investigated in accordance with the
above referenced Standards. The products have been found to comply with the requirements covering the category and the products are
judged to be eligible for Follow-Up Service under the indicated Test Procedure. The manufacturer is authorized to use the UL Mark on
such products which comply with this Test Report and any other applicable requirements of UL LLC ('UL') in accordance with the FollowUp Service Agreement. Only those products which properly bear the UL Mark are considered as being covered by UL's Follow-Up
Service under the indicated Test Procedure.
The applicant is authorized to reproduce the referenced Test Report provided it is reproduced in its entirety.
UL authorizes the applicant to reproduce the latest pages of the referenced Test Report consisting of the first page of the Specific
Technical Criteria through to the end of the Conditions of Acceptability.
Any information and documentation involving UL Mark services are provided on behalf of UL LLC (UL) or any authorized licensee of UL.
Prepared by:
Gerard Soprych
Reviewed by: Daniel Pirozzi
Copyright © 2012
Issue Date:
2010-02-04
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Report Reference #
E135493-A6-UL
2012-03-16
Supporting Documentation
The following documents located at the beginning of this Procedure supplement the requirements of this Test
Report:
A. Authorization - The Authorization page may include additional Factory Identification Code markings.
B. Generic Inspection Instructions i. Part AC details important information which may be applicable to products covered by this Procedure.
Products described in this Test Report must comply with any applicable items listed unless otherwise
stated in the body of this Test Report.
ii. Part AE details any requirements which may be applicable to all products covered by this Procedure.
Products described in this Test Report must comply with any applicable items listed unless otherwise
stated in the body of each Test Report.
iii. Part AF details the requirements for the UL Certification Mark which is not controlled by the technical
standard used to investigate these products. Products are permitted to bear only the Certification
Mark(s) corresponding to the countries for which it is certified, as indicated in each Test Report.
Product Description
The full size VI Chip PRM is a non-isolating DC-DC front end Pre-Regulator Module that is designed to be
used with a VI Chip VTM to make a complete regulated DC-DC converter. The PRM DC-DC converters are
designed for building-in and the input is intended to be derived from a TNV-2, SELV, or non-hazardous
secondary circuit.
Model Differences
See Miscellaneous Enclosure for model nomenclature.
Issue Date:
2010-02-04
Page 3 of 7
Report Reference #
E135493-A6-UL
2012-03-16
Technical Considerations
Equipment mobility : for building-in
Connection to the mains : Not connected directly to mains
Operating condition : continuous
Access location : building-in
Over voltage category (OVC) : Not connected directly to mains
Mains supply tolerance (%) or absolute mains supply values : No direct connection
Tested for IT power systems : No
IT testing, phase-phase voltage (V) : -
Class of equipment : Class II
Considered current rating (A) : -
Pollution degree (PD) : PD 2
IP protection class : IP X0
Altitude of operation (m) : 150
Altitude of test laboratory (m) : 2000
Mass of equipment (kg) : 0.0125
The product was submitted and evaluated for use at the maximum ambient temperature (Tma)
permitted by the manufacturer’s specification of: semiconductor junction temperature of the VI Chip
not exceeding 125°C
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2010-02-04
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Report Reference #
E135493-A6-UL
2012-03-16
Engineering Conditions of Acceptability
For use only in or with complete equipment where the acceptability of the combination is determined by UL
LLC. When installed in an end-product, consideration must be given to the following:
The input to the PRM is intended to be supplied from a TNV-2 circuit, or other non-hazardous
secondary circuit
The PRM is a non-isolating device. The output of the PRM can be considered SELV when the input
is SELV with the exception of the VIZ0051. The output of the VIZ0051 can exceed the SELV limits
under a fault condition but it does not exceed the limits of TNV-2 circuits.
Max Temperature: Keep the maximum semiconductor junction temperature of the VI Chip at 125°C
or less. There are two methods to demonstrate compliance. Method 1: Keep T casemax < 100°C
under all conditions where T casemax is the maximum case temp of the VI chip. Method 2: Keep T
casemax < 125°C - (P dissmax X 1.5) under all conditions where P dissmax = P inputmax - P
outputmax. P dissmax is the amount of power in Watts dissipated within the device. The thermal
resistance of the full size VI Chip from the internal semiconductor junction to the case is 1.5°C/Watts.
If the internal semiconductor junction temperature exceeds 125°C the module may be damaged.
PRM models rated up to 320W were evaluated with a Littelfuse Nano2Fuse rated 10A. PRM models
rated 400W were evaluated with a Littelfuse Nano2Fuse rated 15A. PRM models rated 600W were
evaluated with a Littelfuse Nano2 456 series fuse rated 20A and an SOC 25CF rated 18A
The end-product Electric Strength Test is to be based upon a maximum working voltage of: PrimarySELV: 75 Vrms, 76.8 Vpk
The power supply terminals and/or connectors are: Not investigated for field wiring
The investigated Pollution Degree is: 2
The following end-product enclosures are required: Mechanical , Fire , Electrical
The output of the VIZ0051, VIZ0051x may be considered TNV-2 or external circuitry may be added
and evaluated in the end product in order to provide output over voltage protection and compliance
with the limits of SELV circuits.
Outputs above 240W are considered hazardous energy and shall be investigated in the end use for
accessibility.
Additional Information
Report was upgraded under project 09ME09537 to second edition of standard UL 60950-1. CB Cert DE58297 and report reference 090-909538-000 provided as additional information, see test reference for
details.
Issue Date:
2010-02-04
Page 5 of 7
Report Reference #
2012-03-16
VI CHIP PRM Model Number:
Pbbbcdddeffxx
example: P045F048T40RS
P= P
PRM Family (Pre-regulator Module)
Constant
P
bbb = 045
Input
Voltage
024
028
036
c= F
Package
Size
Full VIC
Nominal (range)
24 Vdc (18-36)
28 Vdc (16-50)
36 Vdc (18-60)
In Board
BGA
K
Input
Voltage
045
048
On Board
J-Lead
F
ddd = 048
Output Voltage Designator
36.0 Vdc (26-55)
036
ff = 32
Output Power Designator
120 W
240 W
12
24
170 W
320 W
17
32
T
M
48.0 Vdc (26-55)
-55 to 125C
400 W
600 W
40
60
xx = AL
Feedback Style Designator (optional)
Adaptive Loop
AL
45 Vdc (38-55)
48 Vdc (36-75)
Through Hole
048
e= T
Product Grade
-40 to 125C
T
Nominal (range)
RS
Remote Sense
Customer Special Models:
Customer Special Model Numbers
Equivalent Standard Model Number
VIP0001, VIP0001x
P045F048T40RS
VIZ0017, VIZ0017x
P045F048T32AL
VIZ0032, VIZ0032x
P048F048T24AL
VIZ0036, VIZ0036x
P045F048T32AL
VIZ0051, VIZ0051x (see license conditions)
P045F048T40RS
VIZ0067, VIZ0067x
P045F048T32AL
MP028F036M12AL, VIZ0076, VIZ0076x
P028F036M12AL
VIZ0079, VIZ0079x
P036F048T12AL
VIZ0081, VIZ0081x
P048F048T24AL
VIZ0082, VIZ0082x
P045F048T32AL
x = revision, any letter A through Z, non-safety related
E135493-A6-UL
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2010-02-04
Page 6 of 7
Report Reference #
2012-03-16
VI CHIP PRM2 Model Number: PRMbbbcdddefffxzz
Example: PRM48BF480T400A00
PRM = Constant
PRM Family (Pre-regulator Module)
Standard version
PRM
Mil-COTS version
MPRM
bbb = 48B
Input
Voltage
24A
28A
28B
36A
36B
Nominal (range)
24 Vdc (18-36)
28 Vdc (16-50)
28 Vdc (5-50)
36 Vdc (18-60)
36 Vdc (26-50)
Input
Voltage
48A
48B
48D
48J
Nominal (range)
48 Vdc (36-75)
48 Vdc (38-55)
48 Vdc (38-60)
48 Vdc (42-55)
c= F
Package Size and Lead Designator
Full VI Chip J-Lead
F
Full VI Chip Though-hole
T
ddd = 480
Output Voltage Designator
36.0 Vdc (26-55)
360
48.0 Vdc (26-55)
480
e= T
Product Grade
-40 to 125C
T
-55 to 125C
M
fff = 400
Output Power Designator (can be any three digits from 120 to 600)
non-inclusive list of examples below
120W
320W
120
320
170W
400W
170
400
200W
500W
200
500
240W
600W
240
600
x= A
Revision (non-safety related)
Any alphanumeric character
x
zz = 00
Customer reference (non-safety related)
Any alphanumeric character or Blank
zz
Customer Special Models:
Customer special Model Numbers
Equivalent Standard Model Number
VIZ0055, VIZ0055x (see license conditions)
PRM48BF480T600A00
E135493-A6-UL
Issue Date:
2010-02-04
Page 7 of 7
Report Reference #
2012-03-16
Full Size Customer Configured PRM Model Number: PRMxyaa-zzzzzz
Example: PRM2A01-123456
PRM = Constant
PRM Family (Pre-regulator Module)
x=2
Controller Revision, 0 through 9 (non-safety related)
y=A
Product Revision, A through Z (non-safety related)
aa = 01
Hardware Configuration, max ratings, actual ratings may be less
HW Configuration
Vin (Vdc)
Vout (Vdc)
01 = full size narrow range
38-55V
55V
02 = full size wide range
36-75V
55V
Pout (W)
500W
400W
zzzzzz = 123456
Any 6 digit numeric combination, customer specific configuration, non-safety related,
J-Lead or Through-Hole, T or M grade, and Feedback Style
E135493-A6-UL