Sgs-Thomson Microelectronics S.a.

Other

Olivier Pizzuto

Federico Pio

Francedillaois Pierre Tailliet

Fran&ccedil;ois Tailliet

An oscillator circuit produces first and second oscillating logic signals that are of a same frequency and are non-overlapping in a first logic state. This oscillator includes a flip-flop circuit to produce third and fourth oscillating logic signals of opposite polarities, this flip-flop circuit being driven by first and second driving logic signals. First and second logic gates receive the third and fourth logic signals and produce the first and second logic signals, the logic state transitions in the first and second logic signals being produced as a function of the logic state transitions of the third and fourth logic signals. The first and second logic gates are organized so as to introduce a delay into the transitions from a second logic state to the first logic state, in the first and second logic signals, with respect to transitions in the third and fourth logic signals. First and second RC type circuits produce the first and second driving signals to control the transitions in the third and fourth logic signals. The oscillator circuit can be used in a switch-over control circuit for a load pump type of high-voltage generator.

Oscillator and switch-over control circuit for a high-voltage generator

A structure of electronic devices integrated in a semiconductor substrate with a first type of conductivity comprising at least a first HV transistor and at least a second LV transistor, each having a corresponding gate region. Said first HV transistor has lightly doped drain and source regions with a second type of conductivity, and said second LV transistor has respective drain and source regions with the second type of conductivity, each including a lightly doped portion adjacent to the respective gate region and a second portion which is more heavily doped and comprises a silicide layer.

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Fuveau, France

Olivier Pizzuto