Issue Date:
2008-07-17
Page 1 of 5
Report Reference #
E135493-A5-UL
2014-03-19
UL TEST REPORT AND PROCEDURE
Standard:
Certification Type:
CCN:
Product:
Model:
UL 60950-1, 2nd Edition, 2011-12-19 (Information Technology
Equipment - Safety - Part 1: General Requirements)
CSA C22.2 No. 60950-1-07, 2nd Edition, 2011-12 (Information
Technology Equipment - Safety - Part 1: General Requirements)
Component Recognition
QQGQ2, QQGQ8 (Power Supplies for Information Technology
Equipment Including Electrical Business Equipment)
DC/DC Converter
BCM Series
BCM2 Series
See Miscellaneous Enclosure for model nomenclature.
Input:48V
Output: 48V Max
Power: 300W Max.
Rating:
Applicant Name and Address:
VICOR CORP
25 FRONTAGE RD
ANDOVER MA 01810-5499
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 © 2014
Issue Date:
2008-07-17
Page 2 of 5
Report Reference #
E135493-A5-UL
2014-03-19
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 BCM and BCM2 are isolating DC-DC Bus Converter Module. These DC-DC converters
are designed for building-in and the input is intended to be derived from a TNV-2, SELV, or other nonhazardous secondary circuit.
Model Differences
See Miscellaneous Enclosure for model nomenclature.
Technical Considerations
Equipment mobility : for building-in
Connection to the mains : N/A
Operating condition : continuous
Access location : building-in
Over voltage category (OVC) : OVC II
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 of protective device as part of the building installation (A) : -
Pollution degree (PD) : PD 2
IP protection class : IP X0
Altitude of operation (m) : 2000
Altitude of test laboratory (m) : 150
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
Issue Date:
2008-07-17
Page 3 of 5
Report Reference #
E135493-A5-UL
2014-03-19
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 BCM is intended to be supplied from a TNV-2 circuit, or other non-hazardous
secondary circuit
The BCM provides 2250 Vdc of isolation from input to output with the exception of the B048F120T20
and the B048K120T20 which only provide 1500Vdc isolation.
The output of the BCM is considered SELV.
Max Temperature: Keep the maximum semiconductor junction temperature of the VI Chip at 125°C
or less. There are three 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.
Method 3: Maintain the internal semiconductor junction temperature at Tj = 125°C or less. This can
be achieved by measuring the dc voltage at the TM (temperature monitor) lead and converting the
voltage to temperature The TM has a nominal +27C set point of 3.0 Vdc and a nominal gain of 10mV
/ °C. Example; TM = 3.4Vdc, Tj = (27 + 40) 67°C
The BCM requires a Littelfuse Nano²Fuse rated 10A or less.
The following Production-Line tests are conducted for this product: Electric Strength
The end-product Electric Strength Test is to be based upon a maximum working voltage of: PrimarySELV: 57.9 Vrms, 88.8 Vpk
The following secondary output circuits are SELV: All
The following secondary output circuits are at non-hazardous energy levels: All
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
Issue Date:
2008-07-17
Page 4 of 5
2014-03-19
VI Chip BCM Model Number: Bbbbcdddeffx
Example: B048F480T30A
B = constant
BCM (Buss converter module)
B
Standard BCM
bbb = 048
Input Voltage
048
c= F
Package
Size
Full VIC
Nominal (range)
48 Vdc (38-55)
In Board
BGA
K
ddd = 480
Output Voltage Designator
010
1.0 Vdc
120
015
1.5 Vdc
160
030
3.0 Vdc
180
040
4.0 Vdc
240
060
6.0 Vdc
320
080
8.0 Vdc
360
096
9.6 Vdc
480
On Board
J-Lead
F
12
16
18
24
32
36
48
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
e= T
Product Grade
T
-40 to 125C
M
-55 to 125C
ff = 30
Output Power Designator
12
120 W
14
140 W
17
170 W
20
200 W
21
210 W
24
240 W
30
300 W
x= A
Revision (optional, non-safety related)
x
Any alphanumeric character
Through
Hole
T
Report Reference #
E135493-A5-UL
Issue Date:
2008-07-17
Page 5 of 5
Report Reference #
2014-03-19
VI CHIP BCM2 Model Number:
Example: BCM48BF240T300A00
BCMbbbcdddefffxzz
BCM = Constant
BCM Family (Buss Converter Module)
BCM Standard version
MBCM Mil-COTS version
bbb = 48B
Input
Voltage
48B
48C
48D
Nominal (range)
48 Vdc (38-55)
48 Vdc (42-53)
48 Vdc (38-60)
c= F
Package Size and Lead Designator
F
Full VI Chip J-Lead
T
Full VI Chip Though-hole
ddd = 240
Output Voltage Designator (can be any three digits from 010 to 480)
Vout = (designator / 10), non-inclusive list of examples below
010
1.0 Vdc
120
12 Vdc
015
1.5 Vdc
160
16 Vdc
030
3.0 Vdc
180
18 Vdc
040
4.0 Vdc
240
24 Vdc
060
6.0 Vdc
320
32 Vdc
080
8.0 Vdc
360
36 Vdc
096
9.6 Vdc
480
48 Vdc
e= T
Product Grade
T
-40 to 125C
M
-55 to 125C
fff = 300
Output Power Designator (can be any three digits from 120 to 300)
non-inclusive list of examples below
120
120 W
210
210 W
140
140 W
240
240 W
170
170 W
300
300 W
200
200 W
x= A
Revision (non-safety related)
x
Any alphanumeric character
zz = 00
Customer reference (non-safety related)
zz
Any alphanumeric character
E135493-A5-UL