HA13705 Hitachi Semiconductor, HA13705 Datasheet - Page 13

• Manufacturer Part Number: HA13705
• Description: IPIC Intelligent Power IC High Side Solenoid Driver
• Manufacturer: Hitachi Semiconductor

Start-up of the Spindle motor
Not using external commutation mode
Using external commutation mode
SPNENAB
EXTCOM
COMM
PHASE
IU
IV
IW
SPNENAB
EXTCOM
COMM
PHASE
IU
IV
IW
Note: “Synchronous driving” is defined as the period after changing SPNENAB = L to H until
the first positive edge of the PHASE signal.
0
0
0
0
0
0
Low
Figure 8
Synchronous driving*
Synchronous driving*
Start-up of the Spindle Motor
B-EMF sensing driving
B-EMF sensing driving
HA13614FH
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