公开(公告)号：US20250103082A1

公开(公告)日：2025-03-27

申请号：US18897333

申请日：2024-09-26

Applicant: STMicroelectronics International N.V.

Inventor： Marc SABUT ,  Emmanuel ALLIER ,  Matthieu DESVERGNE

IPC: G05F3/26 ,  H03F3/45

Abstract: A bandgap voltage generator circuit is formed using only bipolar transistors. The bandgap voltage generator circuit includes output nodes generating first and second bandgap reference currents. A transconductance amplifier circuit in a current control feedback loop of the bandgap voltage generator circuit has differential inputs which receive base currents. A differential amplifier circuit has inputs configured to receive the first and second bandgap reference currents and includes a compensation current sink circuit configured to sink compensation currents from the first and second bandgap reference currents which correspond to the base current received at the differential inputs of the transconductance amplifier circuit.

公开(公告)号：US20250103072A1

公开(公告)日：2025-03-27

申请号：US18373520

申请日：2023-09-27

Applicant: STMicroelectronics International N.V.

Inventor： Marc SABUT ,  Emmanuel ALLIER ,  Matthieu DESVERGNE ,  Denis COTTIN

IPC: G05F1/46 ,  G05F1/575 ,  G05F3/26

Abstract: A bandgap voltage generator circuit is formed using only bipolar transistors. The bandgap voltage generator circuit includes an output node at which a bandgap reference voltage is generated. A transconductance amplifier circuit in a current control feedback loop has a differential input which receives a base current. A compensation current sink circuit operates to sink a compensation current from the output node corresponding to the base current received at the differential input of the transconductance amplifier.