A full-wave motor drive IC based on the back-EMF sensing principle

A full-wave motor drive IC based on the back-EMF sensing principle

A bipolar IC has been designed which allows full-wave driving of brushless three-phase DC motors. The three push-pull power stages operate in a switching mode. The commutation moments are directly derived from the zero-crossings of the back-EMF (electromotive force) in the floating motor windings. A...

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Bibliographische Detailangaben
Veröffentlicht in:IEEE transactions on consumer electronics 1989-08, Vol.35 (3), p.415-420
1. Verfasser: Bahlmann, J.P.M.
Format: Artikel
Sprache:eng
Schlagworte:
Bipolar integrated circuits
Brushless DC motors
Brushless motors
Coils
Commutation
Consumer electronics
DC motors
Delay
Motor drives
Voltage
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Zusammenfassung:A bipolar IC has been designed which allows full-wave driving of brushless three-phase DC motors. The three push-pull power stages operate in a switching mode. The commutation moments are directly derived from the zero-crossings of the back-EMF (electromotive force) in the floating motor windings. A start-up system will generate communications when no zero-crossing can be detected. A highly accurate tach-signal is defined by the EMF zero-crossings. This IC offers the possibility of accurate full-wave motor-driving without extra sensors in the motor.< >
ISSN:0098-3063
1558-4127
DOI:10.1109/30.44298