L6235 STMicroelectronics, L6235 Datasheet - Page 15
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L6235
Manufacturer Part Number
L6235
Description
DMOS DRIVER FOR THREE-PHASE BRUSHLESS DC MOTOR
Manufacturer
STMicroelectronics
Datasheet
1.L6235.pdf
(25 pages)
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Figure 15. Tachometer Speed Control Loop.
Figure 16. t
PULSE
versus C
V
REF
PUL
1 . 10
1 . 10
100
10
C
4
3
REF2
1
and R
R
3
C
R
1
4
PUL
V
R
DD
PUL
.
R
DD
= 20k
R
1
R
PUL
R
R
2
PUL
Cpul [nF]
RCPULSE
= 47k
10
TACHO
VREF
C
C
R
REF1
PUL
PUL
H
1
= 100k
MONOSTABLE
TACHO
100
L6235
15/25