LB11873 データシートの表示（PDF） - ON Semiconductor

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LB11873

For Polygonal Mirror Motors Three-Phase Brushless Motor Driver

ON Semiconductor 

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Hall sensor input waveforms and output current waveform

(1) When the Hall sensor input amplitude is small or when the input waveform slope is low

High

IN1

Low

IN2

IN3

IOUT1

IOUT2

Source

Sink

IOUT3

Top view

180° drive: Current flows during all periods; there are on off periods (180° drive)

(2) When the Hall sensor input amplitude is larger or when the input waveform slope is steep

High

IN1

Low

IN2

IN3

IOUT1

IOUT2

Source

Sink

IOUT3

In this case, periods in which drive is off will occur (the off periods vary depending on the Hall sensor inputs).

No.A0081-5/14

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