Title:
CURRENT DETECTING CIRCUIT FOR POWER ELEMENT
Document Type and Number:
WIPO Patent Application WO/2014/167821
Kind Code:
A1
Abstract:
A current detecting circuit (3, 43, 51) is provided with a current detecting section (12, 15), and a signal generating/transmitting section (13, 49, 52), and corresponding to PWM signals inputted from a control circuit (2), the current detecting circuit detects a current flowing via a power element (6). At a timing when a PWM signal carrier determined on the basis of the signals inputted from the control circuit indicates a smallest value and/or a maximum value, the current detecting section detects the current flowing in the power element. The signal generating/transmitting section generates detection signals having a pulse width corresponding to a current value detected by means of the current detecting section, and transmits the detection signals to the control circuit for each carrier cycle.
Inventors:
NAGAOKA NOBUSUKE (JP)
Application Number:
PCT/JP2014/001976
Publication Date:
October 16, 2014
Filing Date:
April 07, 2014
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H02M7/48; G01R19/00; G01R19/25; H03K17/695
Foreign References:
| JP2003009509A | 2003-01-10 | |||
| JPH09229972A | 1997-09-05 | |||
| JP2003079159A | 2003-03-14 | |||
| JPS6380774A | 1988-04-11 | |||
| JP2007116817A | 2007-05-10 |
Attorney, Agent or Firm:
KIN, Junhi (JP)
Gold Junki (JP)
Gold Junki (JP)
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