HA13631T Datasheet, PDF (8/20 Pages) Hitachi Semiconductor – CD-ROM Combo Driver

HA13631T
3. Running
H
EXTCOM
L
Reverse start-up
voltage
B-EMF
+
0
−
Td
Zero cross
+
detection
0
input
−
H
FGOUT
L
U
U
V
V
W
W
Vspn
Output voltage
(U phase)
0
PWM
PWM
Vspn
Output voltage
(V phase)
0
PWM
PWM
Vspn
Output voltage
(W phase)
0
PWM
PWM
+
Output current
(U phase)
0
−
+
Output current
(V phase)
0
−
+
Output current
(W phase)
0
−
Notes: 1. Delay time Td is determined by C105 to C107, and R109 to R116.
Refer to the section of External Components.
2. B-EMF sensing is masked while FGOUT = H (= Tmint). The Tmint time is set internally.
Refer to the Electrical Characteristics.
8