Title:
MOTOR DRIVE CONTROL SYSTEM
Document Type and Number:
Japanese Patent JP2013162568
Kind Code:
A
Abstract:
To provide a motor drive control system capable of suppressing a malfunction due to a misdetection of current passing through an H bridge circuit.
A motor drive control system includes a backflow detection circuit that outputs a backflow detection signal when current passes through a coil load in a second direction opposite to a first direction during a high speed attenuation mode. A PWM control circuit shifts an H bridge circuit state from the high speed attenuation mode to a low speed attenuation mode according to the backflow detection signal.
Inventors:
AIZAWA HIROTOSHI
TAKAYAMA TORU
YOSHIDA TAKAKAZU
TAKESHITA SHINYA
TAKAYAMA TORU
YOSHIDA TAKAKAZU
TAKESHITA SHINYA
Application Number:
JP2012020713A
Publication Date:
August 19, 2013
Filing Date:
February 02, 2012
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
H03K17/16; H02P7/29; H02P7/291; H02P8/12; H03K17/695
Attorney, Agent or Firm:
Hirohito Katsunuma
Yasukazu Sato
Yasushi Kawasaki
Takeshi Sekine
Akaoka Akira
Tomoya Deguchi
Yasukazu Sato
Yasushi Kawasaki
Takeshi Sekine
Akaoka Akira
Tomoya Deguchi
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