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參數(shù)資料
| 型號： | NCP4331 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Synchronous Buck Controller for High Efficiency Post Regulation |
| 中文描述： | 同步降壓控制器的高效率后調(diào)整 |
| 文件頁數(shù)： | 17/23頁 |
| 文件大?。?/td> | 195K |
| 代理商： | NCP4331 |
NCP4331
http://onsemi.com
17
APPLICATION INFORMATION
Figure 25. “Basic” Configuration (No Use of the Auxiliary Operational Amplifier)
L
LOAD2
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
+
Regulation
Block
LOAD1
HS_ DRV
VCC
VDD
LS_ DRV
GND
SYNC
BST
HB
SS
FB
Cramp
COMP
UVP
FB
VIN_FORWARD
Forward
Driver
(e.g.
NCP1280)
V
in
R
u
R
u
R
sync
V
out2
R
S
(Coil Series
Resistor)
V
out1
+
VCC
FB
CSin+
CSin-
CSout
The input voltage (V
IN
)
is rectified and a portion of the resulting signal is applied to the UVP pin so that the NCP4331 stops
operating when V
IN
is too low. The low and high thresholds of the UVP comparator set the V
IN
limits (V
IN
rising and falling)
together with the V
CC
capacitor.
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