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. 28, 2020
Filed:
May. 03, 2019
Delta Electronics, Inc., Taoyuan, TW;
Chang-Jing Yang, Taoyuan, TW;
Delta Electronics, Inc., Taoyuan, TW;
Abstract
A power circuit includes a voltage converter, an UVLO circuit, a power transistor, and a driving circuit. The voltage converter converts an external voltage to a supply voltage according to an UVLO signal. The UVLO circuit generates the UVLO signal when the external voltage exceeds a threshold. The power transistor draws a power current according to a voltage of a driving node. The driving circuit includes a high-side transistor, a low-side transistor, a charge pump, and a pre-driver. The high-side transistor provides the supply voltage to the driving node according to a high-side voltage of a high-side node. The low-side transistor couples the driving node to a ground according to a first internal signal. The charge pump generates a high-side voltage that exceeds the supply voltage according to the first internal signal. The pre-driver generates the first internal signal according to a control signal.