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. 23, 1995
Filed:
Jul. 19, 1993
Robert B Davies, Tempe, AZ (US);
David F Mietus, Phoenix, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A multi-leaded protected power device having a boot-strap input has been provided. The power device includes a current controlled, boot-strap driven control die (20) for use with a power transistor (25). The control die includes an under voltage lock-out circuit (46) which inhibits drive to the power transistor until the input signals exceed a predetermined threshold level. Moreover, the control die includes a noise immunity enhancement circuit (56) for providing an excess reverse bias across an output SCR (58) for preventing false triggering of the output SCR. The power device further includes a status output lead (204) for indicating when a voltage occurring across the power transistor has exceeded a predetermined threshold, and a current output lead (220) for providing a current that is proportional to a current flowing through the power transistor.