Motor drive circuit and motor drive system using the same

Details Motor drive circuit and motor drive system using the same Motor drive circuit and motor drive system using the same

1992-03-10

1994-02-15

Ro, Bentsu

Electricity: motive power systems

Braking

318293, 3073031, H01L 2500, H02P 308

Patent

active

052870472

ABSTRACT:
A motor drive circuit, in which a first transistor at a drive stage, a second transistor at an output stage to be driven by the first transistor and a third transistor downstream the output stage for a short braking operation are formed in a common substrate or a common well of the substrate, a region of either a P type or an N type in either the substrate or the well is connected with the first transistor via a conductor so that a parasitic transistor is formed in which the substrate or the well serves as its base, whereby a current flowing from the first transistor to the second transistor during the short braking operation is sinked by turning on the parasitic transistor.

REFERENCES:
patent: 3829709 (1974-08-01), Maigret et al.
patent: 3967295 (1976-06-01), Stewart
patent: 4112670 (1978-09-01), Morozumi
patent: 4302718 (1981-11-01), Schade, Jr.
patent: 4933573 (1990-06-01), Takeda et al.
patent: 4937467 (1990-06-01), Tuska et al.
patent: 4989114 (1991-01-01), Storti et al.
patent: 5075577 (1991-12-01), Okitaka

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