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THMC40_11 Datasheet, PDF (15/19 Pages) Texas Instruments – VARIABLE SPEED 12-VDC BRUSHLESS FAN MOTOR DRIVERS | |||
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+12 V
CR1
1N4002
C5
10 µF
+
16 V
â¡
GND
THMC40, THMC41
VARIABLE SPEED 12-VDC BRUSHLESS FAN MOTOR DRIVERS
APPLICATION INFORMATION
SLIS097 â MARCH 2000
Speed Control Input
RD
1 â 10 Mâ¦â
1 â 10 Mâ¦â
Sleep State Option
Full Speed Option
R1
100 kâ¦
0.1 µF
C3
C4
0.1 µF
1 COSC
2 RD
3 CP
4 VPWR
5
VOUT
6 NC
7 PGND
C2
2200 pF
VPWM 14
H+ 13
Hâ 12
THMC41D
PHA 11
PHB 10
AGND 9
NC 8
0.1 µF
C1
R2
3.01 kâ¦
1
4 HALL 2
SENSOR
3
MOTOR
L2
LO
L1
â Optional resistors control fan operation with open speed control input.
â¡ An analog ground trace should be connected close to the ground connection of C4 and C5.
NOTE: Traces in bold handle highest current.
Figure 11. THMC41 Application Schematic
⢠POST OFFICE BOX 655303 DALLAS, TEXAS 75265
15
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