Title:
ELECTRONIC CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2014204598
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an electronic control device capable of setting a voltage to be output from a switching regulator to a desired value without changing hardware.SOLUTION: A switching power supply circuit 2 steps down a battery voltage VB to an intermediate voltage Vm, and outputs the voltage. Series power supply circuits 3 and 4 step down the intermediate voltage Vm to output voltages V1 and V2, and output those voltages. The switching power supply circuit 2 includes: a resistance voltage division type voltage detection circuit 6 for detecting the intermediate voltage Vm for matching the intermediate voltage Vm with a desired target value; and a voltage division resistance switching circuit 7 for switching the voltage division rate of the voltage detection circuit 6 into three stages. A control circuit 5 is configured to execute various processing on the basis of a control program. Thus, it is possible to execute voltage division rate setting processing of controlling the operation of the voltage division resistance switching circuit 7 to set the division rate to an arbitrary value.
Inventors:
ABE TORU
Application Number:
JP2013080345A
Publication Date:
October 27, 2014
Filing Date:
April 08, 2013
Export Citation:
Assignee:
DENSO CORP
International Classes:
H02M3/155
Attorney, Agent or Firm:
Patent business corporation Satow international patent firm