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Part Name
Description
UC3842B View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
UC3842B
HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
STMicroelectronics
UC3842B Datasheet PDF : 15 Pages
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Figure 18 :
Slope Compensation Techniques.
UC2842B/3B/4B/5B - UC3842B/3B/4B/5B
I
S
R
SLOPE
R
1
R
S
V
REG
R
T
R
T
/C
T
C
T
8
4
UC3842B
I
SENSE
3
5
GND
I
S
R
SLOPE
R
1
R
S
V
REG
R
T
R
T
/C
T
C
T
8
4
UC3842B
I
SENSE
3
5
GND
D95IN348
Figure 19 :
Isolated MOSFET Drive and Current Transformer Sensing.
V
CC
V
in
7
+
5.0Vref
-
+
-
S
Q
R
-
+
COMP/LATCH
6
3
C
D95IN349
ISOLATION
BOUNDARY
R
R
S
V
GS
Waveforms
Q1
+
+
0
0
-
50% DC
-
25% DC
( )
I
pk
=
V
(pin 1)
-1.4
3R
S
N
S
N
P
N
S
N
P
9/15
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