Title:
SPREAD SPECTRUM CIRCUIT, SWITCHING REGULATOR, AND SPREAD SPECTRUM METHOD
Document Type and Number:
Japanese Patent JP2018014797
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To spread a switching frequency of a power supply device by means of a simple structure.SOLUTION: A spread spectrum circuit causes a clock signal which is supplied to a switching regulator synchronously operating with a predetermined clock signal to perform spectrum spreading. Specifically, the spread spectrum circuit comprises an input unit to which the predetermined clock signal is input, and a spreading unit that performs pulse phase modulation to the clock signal input, and outputs a phase modulation signal which is a result of pulse phase modulation of the clock signal.SELECTED DRAWING: Figure 1
Inventors:
IZUMIMOTO RYO
Application Number:
JP2016141761A
Publication Date:
January 25, 2018
Filing Date:
July 19, 2016
Export Citation:
Assignee:
DENSO TEN LTD
International Classes:
H02M3/155
Attorney, Agent or Firm:
Yoshiyuki Kawaguchi
Mayuko Wakuda
Akira Hirakawa
Kazunobu Sera
Mayuko Wakuda
Akira Hirakawa
Kazunobu Sera
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