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:
May. 10, 2005
Filed:
Mar. 04, 2002
Bruno C. Nadd, Lourmarin, FR;
David C. Tam, Manhattan Beach, CA (US);
Mark Pavier, Guildford, GB;
Glyn Connah, Glossop, GB;
Bruno C. Nadd, Lourmarin, FR;
David C. Tam, Manhattan Beach, CA (US);
Mark Pavier, Guildford, GB;
Glyn Connah, Glossop, GB;
International Rectifier Corporation, El Segundo, CA (US);
Abstract
A fully protected H-bridge for a d-c motor consists of two high side MOSFETs and a control and logic IC on a first conductive heat sink all within a first package and two discrete low side MOSFETs. The entire bridge is controlled by the IC. Shoot thru protection is provided for each leg, and a PMW soft start sequence is provided through the control of the low side MOSFETs, programed by an external, chargeable RC circuit. Input signals to the high side MOSFETs select the operation modes. Protective circuits are provided for short circuit current and over current conditions. Sleep mode and braking/non braking control is also provided.