HA13571FR Datasheet, PDF (11/22 Pages) Hitachi Semiconductor – Combo (Spindle & VCM) Driver for HDD

HA13571FR
External Components
Parts No.
R1, R2
R101
R102, R103
R106
R107
R108
Rnf
Rs
Rx, Ry
Rf
C101
C102
C103
C104
C105
C107
C108
C109
C110
C111
C112
C113
C114
C115
C116
C117
C118
C119
C120
C121
C131
C132
C133 *
Reccomended
Value
—
34 kΩ
—
100 kΩ
—
TBD
0.33 Ω
0.33 Ω
15 Ω
—
4.7 µF
470 pF
0.047 µF
1000 pF
0.22 µF
2.2 µF
2.2 µF
0.1 µF
390 pF
0.47 µF
0.47 µF
0.003 µF
1.0 µF
0.47 µF
—
0.47 µF
0.02 µF
TBD
0.01 µF
4.4 µF
220 pF
220 pF
4.7 µF
Purpose
Setting of Retract voltage
PWM time off for Spindle driver
Setting of VCM driver gain
Time constant for Soft switching
Phase compensation for VCM driver
for Watch dog timer
Current sensing for Spindle driver
Current sensing for VCM driver
for Filter VCCA12 and VCC5
Snubber for VCM driver
5V power supply by passing
PWM time off for Spindle driver
PWM filter for Spindle driver
PWM filter for VCM driver
Delay for POR
Capacitor for Retract voltage supply
for Booster
for Booster
Time constant for Oscillation
Phase compensation for Spindle driver
12V power supply by passing
Time constant for Soft switching
12V power supply by passing
12V power supply by passing
Phase compensation for VCM driver
Reference output by passing
Prevent from oscillation during PWM drive
for Watch dog timer
Reduction of noise from 12V power supply for VCM driver
Reduction of noise from 12V power supply for VCM driver
(Option) Filter for POR12VADJ
(Option) Filter for POR5VADJ
Reduction of noise from 12V power supply for VCM driver
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