公开(公告)号：US20230208294A1

公开(公告)日：2023-06-29

申请号：US17560977

申请日：2021-12-23

Applicant: STMicroelectronics S.r.l.

Inventor： Aldo VIDONI ,  Andrea BARBIERI ,  Franco CONSIGLIERI

IPC: H02M3/158 ,  G02B26/08

CPC classification number: H02M3/158 ,  G02B26/0833

Abstract: A DC-DC boost converter includes an inductor coupled between an input voltage and an input node, a first path coupled between the input node and a first output node at which a first output voltage is generated, and a second path coupled between the input node and a second output node at which a second output voltage is generated. The DC-DC boost converter operates in a first operating phase where the first path boosts the first output voltage and where the second path is kept from boosting the second output voltage by the second path being coupled to the first path, and operates in a second operating phase where the second path boosts the second output voltage and where the first path is kept from boosting the first output voltage by the second path not being coupled to the first path.

公开(公告)号：US20230216405A1

公开(公告)日：2023-07-06

申请号：US17565674

申请日：2021-12-30

Applicant: STMicroelectronics S.r.l.

Inventor： Andrea BARBIERI ,  Aldo VIDONI ,  Marco ZAMPROGNO

IPC: H02M3/158 ,  H02M1/00 ,  H02M1/08

CPC classification number: H02M3/158 ,  H02M1/0025 ,  H02M1/08

Abstract: A DC-DC boost converter includes an inductor coupled between an input voltage and an input node, a diode coupled between the input node and an output node, and an output capacitor coupled between the output node and ground such that an output voltage is formed across the output capacitor. A switch selectively couples the input node to ground in response to a drive signal. Control loop circuitry includes an error amplifier to generate an analog error voltage based upon a comparison of a feedback voltage to a reference voltage, the feedback voltage being indicative of the output voltage, a quantizer to quantize the analog error voltage to produce a digital error signal, and a drive voltage generation circuit to generate the drive signal as having a duty cycle based upon the digital error signal.