公开(公告)号：US20230291416A1

公开(公告)日：2023-09-14

申请号：US17690847

申请日：2022-03-09

Applicant: STMicroelectronics S.r.l.

Inventor： Nicola Lupo ,  Enrico Mammei ,  Michele Bartolini ,  Stefano Colli

IPC: H03M1/66 ,  H03F3/21

CPC classification number: H03M1/66 ,  H03F3/21

Abstract: A method to drive a digital to analog converter (DAC), the method including setting a reference current for the DAC with a reference current source, a base voltage being responsive to changes in a reference voltage at a reference node coupled with the reference current source; sensing a change in the reference voltage; and adaptively steadying the base voltage based on the change in the reference voltage to maintain proportionality between an output current of the DAC and the reference current.

公开(公告)号：US20220413531A1

公开(公告)日：2022-12-29

申请号：US17362532

申请日：2021-06-29

Applicant: STMicroelectronics S.r.l.

Inventor： Enrico Mammei ,  Francesco Ravelli ,  Edoardo Contini ,  Paolo Pulici

IPC: G05F1/565 ,  G05F1/575 ,  G11B5/012

Abstract: In an embodiment, a linear voltage regulator includes: an output transistor having a first current path terminal configured to be coupled to a load, and a second current path terminal coupled to a first supply terminal, where the output transistor is configured to provide, at the first current path terminal, a regulated output voltage; a voltage source circuit configured to provide, in an open loop manner, a first voltage to a control terminal of the output transistor; and a feedback loop coupled between the first current path terminal of the output transistor and the control terminal of the output transistor, the feedback loop including a sense transistor having a first current path terminal coupled to the first current path terminal of the output transistor.