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參數(shù)資料
| 型號： | SRM4010 |
| 英文描述： | DC:DC Converter |
| 中文描述： | 直流：DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 9/11頁 |
| 文件大?。?/td> | 224K |
| 代理商： | SRM4010 |
Microsemi
Colorado Division
800 Hoyt Street, Broomfield, CO. 80020, 303-469-2161, Fax: 303-466-3775
Page 9
Copyright 2000
2003-02-05 Rev. IR
W
M
.
C
SRM4010
40A Synchronous Rectifier Module
COLOR ADO DIVISION
Very Low Output Voltage Converter
For voltages below 1.25 volts, R3 can be moved to REG out to allow regulation below the 1.24 volt reference as shown in Figure 8. In
this case the REG
OUT
is used to feed current into the TLV431’s summing node. This causes the output to regulate at a voltage lower than
the reference. There are other variations of closing the feedback loop that can be used, but in many cases the availability of the REG
OUT
makes the task easier.
In applications where the peak transformer voltage is less than about 8 volts, power can be supplied to the module through an additional
winding on the power transformer. This requires only the additional winding and one diode. This is illustrated in figure 8 with
transformer winding T1E and D4.
Figure 8
SRM4010 Configured for outputs below 1.25 Volts
D4
T1C
5
6
R3
CURRENT
MODE
CONTROL
T1E
9
10
C5
R4
1
R6
U2
TLV431A
R5
1
R2
T6D
7
8
L1
C3
22 PF
C4
U1
SRM4010
1
2
3
4
5
6
7
8
9
CTCH
FWD
Sgnd
REGin
REGout
Pgnd
CDLY
CPDT SPD
R1
1
C1
T1B
3
4
D3
T1A
1
2
ISO1
1
2
3
4
D1
Q1
C2
47 PF
A
P
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