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:
Oct. 29, 2019
Filed:
Aug. 23, 2018
Applicant:
Dialog Semiconductor (Uk) Limited, London, GB;
Inventor:
Mark Childs, Swindon, GB;
Assignee:
Dialog Semiconductor (UK) Limited, London, GB;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/158 (2006.01); H02M 3/156 (2006.01); H03L 7/10 (2006.01); H03K 4/48 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 3/156 (2013.01); H03K 4/48 (2013.01); H03L 7/10 (2013.01); H02M 2001/0041 (2013.01);
Abstract
Current in a switching converter is controlled using a current-mode hysteretic controller. The high-side switch (usually a PMOS) is turned off when the current in the coil exceeds a certain peak control current. The low-side switch (usually an NMOS) is turned off when the current in the coil falls below a certain valley control current. A current ramp is added to one of these control currents, either peak or valley. The current ramp is initiated by a reference clock signal, which has the effect of synchronizing the switching converter to the reference clock.