Method and apparatus for controlling power source semiconductor

• US 9,544,012 B2
• Filed: 11/10/2015
• Issued: 01/10/2017
• Est. Priority Date: 11/12/2014
• Status: Active Grant

• Current Assignee: Hyundai Mobis Co., Ltd.
• Original Assignee: Hyundai Autron Co., Ltd. (Hyundai Mobis Co., Ltd.)
• Inventors: Lee, Soon Seob, Ha, Tae Ok, Shin, Jong Ha
• Primary Examiner(s): Washburn, Daniel
• Assistant Examiner(s): Hassan, Sarah
• Application Number:
  US14/937,635
• Publication Number:
  US 20160134326A1
• Time in Patent Office: 427 Days
• Field of Search: 375/224, 315/194
• US Class Current: 1/1
• CPC Class Codes: H01L 23/24 solid or gel at the normal operating temperature of the device H01L23/3135 takes precedence
• CPC Class Codes: H02M 1/143 using compensating arrangements for reducing noise from the supply in transmission systems H04B15/005
• CPC Class Codes: H02M 1/44 Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
• CPC Class Codes: H04B 1/69 Spread spectrum techniques

Abstract

A method for controlling a power source semiconductor may include: supplying, by a switching frequency supply unit, preset respective reference switching frequencies to a plurality of elements which are operated according to a respective switching frequency; sensing, by a control unit, sensing interference in the plurality of elements, based on operations of the elements according to the respective reference switching frequencies; setting, by the control unit, bandwidths for the respective reference switching frequencies when the interference in the plurality of elements is sensed; and increasing, by a bandwidth adjusting unit, bandwidth of the respective reference switching frequencies supplied through the switching frequency supply unit, based on the bandwidths for the respective reference switching frequencies.

Claims

1. A method for controlling a power source semiconductor, comprising:

supplying, by an oscillator, preset respective reference switching frequencies to a plurality of elements which are operated according to a respective switching frequency;

sensing, by a controller, sensing interference in the plurality of elements, based on operations of the elements according to the respective reference switching frequencies;

setting, by the controller, bandwidths for the respective reference switching frequencies when the interference in the plurality of elements is sensed; and

increasing, by the controller, bandwidth of the respective reference switching frequencies supplied through the oscillator, based on the bandwidths for the respective reference switching frequencies,

wherein in the setting of the bandwidths for the respective reference switching frequencies, the controller sets the bandwidths for the respective reference switching frequencies such that the bandwidths are proportional to a magnitude of respective reference switching frequency.

2. The method of claim 1, wherein in the increasing of the bandwidth of the reference switching frequencies,

the controller increases the bandwidth of the reference switching frequencies through a spread spectrum method.

3. The method of claim 1, wherein the plurality of elements which are operated according to the respective switching frequency comprise a DC/DC converter and a charge pump.

4. The method of claim 1, wherein in the setting of the bandwidths for the respective reference switching frequencies,

the controller sets the bandwidths for the respective reference switching frequencies to values obtained by multiplying the respective reference switching frequency by a preset reference ratio.

5. An apparatus for controlling a power source semiconductor, comprising:

an oscillator supplying preset respective reference switching frequencies to a plurality of elements which are operated according to a respective switching frequency;

a controller sensing interference in the plurality of elements based on the operations of the elements according to the respective reference switching frequencies, setting bandwidths for the respective reference switching frequencies when the interference in the elements is sensed, and increasing bandwidth of the respective reference switching frequencies supplied through the oscillator, based on the bandwidths for the respective reference switching frequencies,

wherein the controller sets the bandwidths for the respective reference switching frequencies such that the bandwidths are proportional to a magnitude of respective reference switching frequency.

6. The apparatus of claim 5, wherein the controller increases the bandwidth of the respective reference switching frequencies through a spread spectrum method.

7. The apparatus of claim 5, wherein the plurality of elements which are operated according to the respective switching frequency comprise a DC/DC converter and a charge pump.

8. The apparatus of claim 5, wherein the controller sets the bandwidths for the respective reference switching frequencies to values obtained by multiplying the respective reference switching frequency by a preset reference ratio.