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:
Apr. 07, 2015
Filed:
Jul. 31, 2012
Chao-jen Huang, Taichung, TW;
Chien-chun LU, Tainan, TW;
Chao-Jen Huang, Taichung, TW;
Chien-Chun Lu, Tainan, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A maximum power point tracking controller, suitable for controlling an output voltage of a power converter is provided, including a slope detection unit and a control unit. The slope detection unit calculates whether the output voltage is in a positive trend or in a negative trend according to a detection signal corresponding to the output voltage in order to output a trend signal, in which the voltage level of the trend signal is a first voltage level or second voltage level when the output voltage is in the positive trend or negative trend. The control unit has first and second operation modes to respectively increase and decrease a duty cycle of a PWM signal, in which the control unit switches current operation mode to perform a maximum power point tracking procedure when the trend signal is changed from the first voltage level to the second voltage level.