HA13561F データシートの表示（PDF） - Hitachi -> Renesas Electronics

部品番号

コンポーネント説明

メーカー

HA13561F

Combo (Spindle & VCM) Driver

Hitachi -> Renesas Electronics 

3. Motor start-up seaquence

HA13561F

(a) Timing chart of start-up seaquence

SPNENAB

Open

No

Rotation

Speed

Synchronous

Driving

Driving by

B-EMF

sensing

No+∆No*1

No–∆No*1

0

Internal

READY

READY

(Pin 43)

Switching

tdelay*2

Soft Switching*3

Note *1. Speed lock detection range ∆No is as follows.

t

∆No =1.2% when CNTSEL=H

=1.5% when CNTSEL=Open

=1.8% when CNTSEL=L

*2. READY output goes to High, if the rotation speed error keeps to be less than

∆No longer time than tdelay.

tdelay= 500 • 107 [ms]

fclk [Hz]

*3. The turning point of driving mode from switching synchronize to the turning

point of READY output from Low to High.

(b) Retry circuitry for misstart-up

Motor

on

Synchronous

driving

(Motor off)

(Motor stop)

,,,, Driving by

B-EMF

sensing

(not stop)

Motor

stop

detector

The HA13561F has the motor stop detector as shown hatching block. This function is monitoring the

situation of the motor while the motor is running by B-EMF sensing. If the motor will be caused a

misstarting up, the motor will be automatically restarted within 200 ms after the motor stopped. This

function increase the reliability for the motor starting up.

9

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