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L9341 데이터시트(PDF) 4 Page - STMicroelectronics

부품명 L9341
상세설명  QUAD LOW SIDE DRIVER
PDF  10 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9341 데이터시트(HTML) 4 Page - STMicroelectronics

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background image
15
CLK
PWM3
PWM4
PWM1
PWM2
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Figure 1: Logic Diagram of PWM Generation.
+12V
I s
I s
12V
0
1A
1A
0
0
du/dt
du/dt
di/dt
di/dt
di/dt
di/dt
5%
5%
Internal PWM Signal
I
I
Current through
Flyback Diode
Current through
Low Side Switch
I
GND
out
V out
t
dpo
out
t
dpo
f
I
f
D
DMOS
D
OUT
Vs
D
I
f
Output Voltage V
20 mH
5
10 nF
220 nF
Figure 2: Output Switching Diagram.
220 nF
D1
Schaffner
Generator
4 x 10 nF
-2V to 40 V
Vs
GND
OUT1
OUT2
OUT3
OUT4
4x 1 nF
+12V
10 uF
VCC
+5V
Figure 3: Test Circuit for Schaffner Pulses.
INTERNAL
CLOCK
L9341
4/10



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