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, 2013
Filed:
Mar. 15, 2012
Carmelo Ucciardello, Catania, IT;
Antonino Conte, Tremestieri Etneo, IT;
Santi Nunzio Antonino Pagano, Catania, IT;
Carmelo Ucciardello, Catania, IT;
Antonino Conte, Tremestieri Etneo, IT;
Santi Nunzio Antonino Pagano, Catania, IT;
STMicroelectronics S.R.L., Agrate Brianza (MB), IT;
Abstract
The charge pump circuit has a plurality of cascaded charge pump stages, each provided with a first pump capacitor connected to a first internal node and receiving a first high voltage phase signal, and a second pump capacitor connected to a second internal node and receiving a second high voltage phase signal, complementary with respect to the first. A first transfer transistor is coupled between the first internal node and an intermediate node, and a second transfer transistor is coupled between the second internal node and the intermediate node. The first and second high voltage phase signals have a voltage dynamics higher than a maximum voltage sustainable by the first and second transfer transistors. A protection stage is set between the first internal node and second internal node and respectively, the first transfer transistor and second transfer transistor, for protecting the same transfer transistors from overvoltages.