HA13631T Datasheet, PDF (4/20 Pages) Hitachi Semiconductor – CD-ROM Combo Driver

HA13631T
Pin Description (cont)
Pin No.
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
Pin Name
HW+
HW–
VCTL
REFIN
RT
CT1
CT2
PWMDC
SGND
VSS
OP2IN
TRKIN
TRKN
TRKP
FCSGND
VFCS
FCSP
FCSN
FCSN
OP1IN
NC
NC
ASGND
Function
W-phase Hall +input, and W-phase B-EMF connection pin for sensorless
W-phase Hall –input, and center tap connection pin for sensorless
SPN driver control input
Reference voltage for control inputs. Common to all drivers.
Reference voltage. The IC’s internal reference current is determined by this
voltage and the external resistor Rt.
Time constant for clock oscillation. The oscillator frequency is determined by the
external capacitor and resistor Ct1 and Rt.
Time constant for PWM carrier. The amplitude is determined by the value of the
external capacitor Ct1.
Phase compensation connection pin for matching PWM carrier DC level with
REFIN
SPN small signal GND
Control block power supply. 5 V
Inverted input of OP amp. 2 for TRK driver control
TRK driver control input
TRK driver N output
TRK driver P output
FCS and TRK driver GND
FCS driver power supply
FCS driver P output
FCS driver N output
FCS driver control input
Inverted input of OP amp. 1 for FCS driver control
No connection
No connection
Actuator small signal GND
4