FAN8412M/FAN8413M
10
Typical Application Circuits2 (48V)
1 D1 : A reverse protection diode for IC.
2.D2 : A reverse protection diode for motor coil.
3.D3/D4 : Zener diode for freewheeling.
4.R1/R2 : A resister to set DC hall bias level.
5.R3/R4 : A resister to limit a base current of external power TR.
6.R5 : A pull-up resister for taco output signal when a fan motor is locked.
7.R6/R7 : A resister to set a output voltage of TR(Q3).
8.C1 : A Capacitor for lock protection and detection of a fan motor.
If lock protection and detection functions are not necessary , LD pin should be connect ground.
9.C2 : A capacitor to reduce a noise in hall input stage. This is not necessary in case of no noise.
10.C3 : This is not necessary in case the stable input on V
CC
is provided.
11.Q1/Q2 : An external power TR .
12.Q3 : An external power TR to control output voltage.
Commutation
& Control
V
CC
Hall
IN-
IN+
AL /
LD
V
CC
GND
OUT
B
OUT
A
V
S
V
M
D2
D3
D4
R1
R2
R3
R4
C1
C2
R5
8
6
3
4
2
5
1
7
FAN8412M/
FAN8413M
Q1
Q2
R6
R7
Q3
D1
C3
V
Signal
TACO
