The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 25, 2014
Filed:
Sep. 12, 2011
Ryotaro Kudo, Kanagawa, JP;
Tomoaki Uno, Kanagawa, JP;
Koji Tateno, Kanagawa, JP;
Hideo Ishii, Kanagawa, JP;
Kazuyuki Umezu, Kanagawa, JP;
Koji Saikusa, Kanagawa, JP;
Ryotaro Kudo, Kanagawa, JP;
Tomoaki Uno, Kanagawa, JP;
Koji Tateno, Kanagawa, JP;
Hideo Ishii, Kanagawa, JP;
Kazuyuki Umezu, Kanagawa, JP;
Koji Saikusa, Kanagawa, JP;
Renesas Electronics Corporation, Kanagawa, JP;
Abstract
Miniaturization of a multiphase type power supply device can be achieved. A power supply control unit in which, for example, a microcontroller unit, a memory unit and an analog controller unit are formed over a single chip, a plurality of PWM-equipped drive units, and a plurality of inductors configure a multiphase power supply. The microcontroller unit outputs clock signals each having a frequency and a phase defined based on a program on the memory unit to the respective PWM-equipped drive units. The analog controller unit detects a difference between a voltage value of a load and a target voltage value acquired via a serial interface and outputs an error amp signal therefrom. Each of the PWM-equipped drive units drives each inductor by a peak current control system using the clock signal and the error amp signal.