參數(shù)資料
型號: UC3844TD
廠商: 意法半導(dǎo)體
英文描述: HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
中文描述: 高性能電流模式PWM控制器
文件頁數(shù): 11/15頁
文件大?。?/td> 228K
代理商: UC3844TD
D99IN1060
+
-
+
R
A
1
7
f =
R
BIAS
OSC
C
6
V
REF
R
R
B
+
-
+
-
EA
R
2R
R
S
Q
8
4
5
2
3
5K
5K
5K
NE555
8
4
2
1
5
TO ADDITIONAL
UC384XT
1.44
(R
A
+ 2R
B
)C
D
max
=
R
B
R
A
+ 2R
B
Figure 23:
External Duty Cycle Clamp and Multi Unit Synchronization.
D95IN352
+
-
EA
+
R
2R
5
R
T
1
2
EXTERNAL
SYNC INPUT
The diode clamp is required if the Sync amplitude is large enough to cause
the bottom side of C
T
to go more than 300mV below ground
R
BIAS
OSC
C
T
0.01
μ
F
47
4
8
V
REF
R
Figure 22:
External Clock Synchronization.
U3842T - UC3843T - UC3844T - UC3845T
11/15
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