Patent ID: 11881759
Assignee: STMICROELECTRONICS S.R.L.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A circuit, comprising: a current generator; and a negative bootstrap circuitry coupled to a first node of the current generator, the negative bootstrap circuit including a pump capacitor having a first terminal and a second terminal, the first terminal coupled to the first node of the current generator, the second terminal selectively coupled, through a first inverting buffer, to one of a first voltage potential or a second voltage potential;
a transistor coupled between the first terminal of the pump capacitor and the second voltage potential, the transistor configured to be controlled based on a pulse signal; and
a selection circuit, the selection circuit configured to output one of the first voltage potential or a voltage potential at the first terminal of the pump capacitor to a control terminal of the transistor based on the pulse signal,
wherein in response to the second terminal of the pump capacitor is coupled to the second voltage potential, the first terminal of the pump capacitor provides a negative voltage at the first node of the current generator based on a potential between the second terminal and the first terminal.