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BQ57120EZB38 Datasheet(PDF) 12 Page - SynQor Worldwide Headquarters

Part No. BQ57120EZB38
Description  Output over-voltage protection
Download  13 Pages
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Maker  SYNQOR [SynQor Worldwide Headquarters]
Homepage  http://www.synqor.com
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BQ57120EZB38 Datasheet(HTML) 12 Page - SynQor Worldwide Headquarters

 
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Input:
40-65V
Output:
12.0V
Current:
38A
Package:
Eighth-brick
Product # BQ57120EZB38
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0006442 Rev. D
02/17/16
Page 12
Input:
40-65V
Output:
12.0V
Current:
38A
Package:
Eighth-brick
Applications Section
Figure F: Keep Out Areas for BusQor module (bottom view)
Current Sharing: BusQor modules are designed to operate in parallel
without the use of any external current share circuitry ("droop share").
An output capacitor is recommended across each module and located
close to the converter for optimum filtering and noise control performance.
Dedicated input capacitors / inductors are recommended. The input
inductor should be placed between the external input capacitor and the
input pins of the Bus Qor module. The external input inductor will limit
the ripple current into the external input capacitor (this Bus Qor product
does not have an "on board" input inductor). PCB layout for the input
circuit should be such that high frequency ripple currents of each module
is restricted to a loop formed by the input capacitors / inductor and the
input terminals of the BusQor module. See Figure H for details on PCB
layout. Contact SynQor application engineering for further assistance on
PCB trace design.
-5.0%
-4.0%
-3.0%
-2.0%
-1.0%
0.0%
1.0%
2.0%
3.0%
4.0%
5.0%
5
10 15 20 25 30 35 40 45 50 55 60 65 70 75
Total Load Current (A)
Module 1
Module 2
BusQor 1
BusQor 2
C2
C1
C3
C4
L2
L1
Common
Mode
The current share performance of two paralleled modules is illustrated
in the graph in Figure G. In this graph the typical percent deviation from
ideal sharing (50%) is plotted for each module versus the total output load
current at 48Vin.
Figure G: Current share performance of 2 paralleled modules
Figure H: Recommended PCB layout for input circuit
48Vin
column 7
column 8


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