Datasheet

+12V
-12V
R
M
R = 12W
M
dc
Motor
R
2
10kW
R
1
1kW
R
SET
V
IN
EMF
R
S
1W
OPA564
V
DIG
(1)
C
0.1 F
1
m
C
0.1 F
1
m
C
47 F
2
m
C
47 F
2
m
R
5k
3
W
Z
2
S
2
Z
1
S
1
(2)
(2)
(3)
(3)
Note (4)
Note (4)
V+
V-
V
DIG
10kW
4.7V
Zener
1N4732A
(a)
(b)
2
51
4
3
IN
C
1000 Fm
I1
C
100nF
I2
C
22 Fm
OUT
I
IN
I
RO
V
RD
V
OUT
I
OUT
R
EXT
5kW
V
IN
I
D,c
I
D,d
I
GND
V
D
C
D
47nF
DELAY
GND
RESET
OUT
TLE4275-Q1
OPA564
www.ti.com SBOS372E –OCTOBER 2008– REVISED JANUARY 2011
(1) I
FLAG
and T
FLAG
connections are not shown.
(2) Z
1
, Z
2
= zener diodes (IN5246 or equivalent). Select Z
1
and Z
2
diodes that are capable of the maximum anticipated surge current.
(3) S
1
, S
2
= Schottky diodes (STPS1L40 or equivalent).
(4) C
1
= high-frequency bypass capacitors; C
2
= low-frequency bypass capacitors (minimum of 10mF for every 1A peak current).
Figure 55. DC Motor Speed Controller (without Tachometer)
Figure 56. Circuits for Generating V
DIG
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