Title:
DC MOTOR DRIVE CIRCUIT, DRIVE METHOD, AND ELECTRONIC DEVICE USING THE SAME
Document Type and Number:
Japanese Patent JP2019088063
Kind Code:
A
Abstract:
To reduce power consumption.SOLUTION: An error detector 310 is a position error value ERR corresponding to a difference between a position command value P_REF indicating the target position of a rotor based on a clock signal CLK and a position detection value P_FB indicating the current position of the rotor based on the pulse signals EN_A and EN_B from the encoder. A feedback controller 330 generates a torque command value T_REF such that the position error value ERR approaches zero. A drive IC 200C transitions to a pause mode in which the operation of at least some of the circuit blocks are stopped when the non-input state of the clock signal CLK continues for a predetermined time.SELECTED DRAWING: Figure 11
Inventors:
DOBASHI MASANORI
HASHIMOTO HIROKI
HASHIMOTO HIROKI
Application Number:
JP2017213092A
Publication Date:
June 06, 2019
Filing Date:
November 02, 2017
Export Citation:
Assignee:
ROHM CO LTD
International Classes:
H02P6/16; H02P6/24
Domestic Patent References:
| JP2009055723A | 2009-03-12 | |||
| JP2011200073A | 2011-10-06 | |||
| JP2016019388A | 2016-02-01 | |||
| JP2017184427A | 2017-10-05 |
Foreign References:
| WO2017154476A1 | 2017-09-14 |
Attorney, Agent or Firm:
Sakaki Morishita
Masaki Taiki
Masaki Taiki