bq50120etl16pys SynQor Worldwide Headquarters, bq50120etl16pys Datasheet - Page 12

• Manufacturer Part Number: bq50120etl16pys
• Description: Eighth-brick Dc Bus Converter
• Manufacturer: SynQor Worldwide Headquarters

Product # BQ55120ETL16
T
T
Vin
Figure H: BusQor Output Paralleling for increased current output.
be used to ensure accuracy. A calibrated DMM set to 300mV
is acceptable. Since this measurement is done on the Primary
area of the converter, a slight non-linearity may be observed
over the load current range. Using the Scale Factor referenced
above, the error may be on the order of 4%. For more detailed
information consult the application note on SynQor’s web site
titled “Output Load Current Calculations”.
Current Sharing: BusQor modules are designed to operate in
parallel without the use of any external current share circuitry. A
typical circuit for paralleling two BusQor modules is shown in
Figure H. An output capacitor is recommended across each mod-
ule and located close to the converter for optimum filtering and
noise control performance. Dedicated input inductors are recom-
mended but are considered optional. Input capacitors must be
located close to the converter module. PCB layout in the input cir-
cuit should be such that high frequency ripple currents of each
module is restricted to a loop formed by the input capacitors and
the input terminals of the BusQor module. See Figure K for details
on PCB layout. Contact SynQor application engineering for fur-
ther assistance on PCB trace design.
Figure G: Location of Sense Resistors
echnical S
echnical S
pecification
pecification
Phone [phone]
1
2
3
1
2
3
(N logic option)
(N logic option)
BusQor module
BusQor module
5
4
5
4
www.synqor.com
12Vout
32A
The current share performance of two paralleled modules is illus-
trated in the graph in Figure J. In this graph the percent deviation
from ideal sharing (50%) is plotted for each module versus the
total output load current at 48Vin.
RoHS Compliance: The EU led RoHS (Restriction of Hazardous
Substances) Directive bans the use of Lead, Cadmium,
Hexavalent Chromium, Mercury, Polybrominated Biphenyls
(PBB), and Polybrominated Diphenyl Ether (PBDE) in Electrical
and Electronic Equipment. This SynQor product is available as
5/6 RoHS compliant (product with lead) or 6/6 RoHS compliant.
For more information please refer to SynQor’s RoHS addendum
available at our RoHS Compliance / Lead Free Initiative web
page or e-mail us at [e-mail].
Figure J: Current share performance of 2 paralleled modules
48Vin
Figure K: Recommended PCB layout for input circuit
(Not shown
in Figure H)
-0.5%
-1.0%
-1.5%
-2.0%
2.0%
1.5%
1.0%
0.5%
0.0%
Doc.# 005-2BE552B Rev. A
4
CM EMI
filter
8
Bulk
Cap
12
P
P
Current:
Current:
ackage:
ackage:
Output:
Output:
Total Load Current (A)
Input:
Input:
16
Input LC filters
20
03/16/06
35-55 V
12 V
16 A
Eighth-brick
35-55 V
12 V
16 A
Eighth-brick
24
(192W)
(192W)
Module 1
Module 2
BusQor module
28
BusQor module
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