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:
Jun. 12, 2018
Filed:
Oct. 05, 2017
Nxp Usa, Inc., Austin, TX (US);
Xiaowen Wu, Shanghai, CN;
Lei Tian, Shanghai, CN;
NXP USA, INC., Austin, TX (US);
Abstract
A DC-DC power converter converts a DC input voltage at an input node into a DC output voltage at an output node. The converter has a main control loop that generates control signals used to control series-connected p-type and n-type switches that selectively connect an inductor to the input node or to ground while operating the converter in either a continuous-conduction mode (CCM) or a discontinuous-conduction mode (DCM). Zero-crossing detection (ZCD) circuitry detects when the inductor current reaches zero and generates a ZCD control signal used to control the n-type switch to inhibit negative inductor currents during the DCM mode. Overshoot-protection (OP) circuitry detects when the DC output voltage gets too high and generates an OP control signal used to control the n-type switch to inhibit overshoot conditions at the output node that can result from CCM-to-DCM mode transitions and from sudden reductions in output current loading.