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. 21, 2006
Filed:
Jun. 22, 2004
Manfred Plankensteiner, Germering, DE;
Manfred Plankensteiner, Germering, DE;
Dialog Semiconductor GmbH, Kirchheim/Teck-Nabern, DE;
Abstract
Actual switching DC—DC converters have disadvantages in specific operating regions due to different reasons for power losses. Large switching transistors provide favorable efficiency at high output currents, but need high currents to charge/discharge the switching transistor's gate, resulting in poor efficiency at low output currents. Small transistors are more efficient at low currents, but are poor at high currents. The disclosed invention changes the size of the MOSFET switching transistors proportional to the output current, thus combining the efficiency of small transistors at low output currents and of large transistors at high output currents.