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参数资料
| 型号： | BQ50120QTA20NKC-G |
| 厂商： | SYNQOR INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 240 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT, QUARTER BRICK PACKAGE-5 |
| 文件页数： | 3/12页 |
| 文件大小： | 5072K |
| 代理商： | BQ50120QTA20NKC-G |
Product # BQ50120QTA20
Phone 1-888-567-9596
Doc.# 005-2BQ512J Rev. F
03/26/10
Page 11
Input:
Output:
Current:
PPackage:
ackage:
42-53 V
12 V
20 A
Quarter-brick
T
Technical S
echnical Specification
pecification
The number 800 is a “Load Current Scale Factor” for this prod-
uct, valid only for Vin = 48V. Hence, measurement should be
made at this input voltage.
The voltage drop across the sense resistor is about 25mV at full
load of 20A. Therefore, proper measuring techniques must 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 website 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 rec-
ommended but are considered optional. Input capacitors must be
located close to the converter module. PCB layout in the input
circuit 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 further assistance on PCB trace design.
The current share performance of two paralleled modules is illus-
trated in the graph in Figure J. In this graph the percent devia-
tion from ideal sharing (50%) is plotted for each module versus
the total output load current at 48Vin.
Figure H: BusQor Output Paralleling for increased current output.
BusQor module
(N logic option)
Vin
12Vout
40A
1
2
3
1
2
3
5
4
5
4
BusQor module
(N logic option)
Figure J: Current share performance of 2 paralleled modules
Figure K: Recommended PCB layout for input circuit
-8%
-6%
-4%
-2%
0%
2%
4%
6%
8%
10%
5
10
15
20
25
30
35
40
Total Load Current (A)
D
ev
ia
ti
o
n
fr
o
m
50
/5
0
S
h
ar
in
g
(%
)
Module 1
Module 2
48Vin
CM EMI
filter
Bulk
Cap
Input LC filters
BusQor module
(Not shown
in Figure H)
Figure G: Location of Sense Resistors
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|---|---|
| BQ50120QTA20NKS | 制造商:SYNQOR 制造商全称:SYNQOR 功能描述:Quarter-brick DC Bus Converter |
| BQ50120QTA20NNC | 制造商:SYNQOR 制造商全称:SYNQOR 功能描述:Quarter-brick DC Bus Converter |
| BQ50120QTA20NNS | 制造商:SYNQOR 制造商全称:SYNQOR 功能描述:Quarter-brick DC Bus Converter |
| BQ50120QTA20NRC | 制造商:SYNQOR 制造商全称:SYNQOR 功能描述:Quarter-brick DC Bus Converter |
| BQ50120QTA20NRS | 制造商:SYNQOR 制造商全称:SYNQOR 功能描述:Quarter-brick DC Bus Converter |
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