公开(公告)号：EP4207571A1

公开(公告)日：2023-07-05

申请号：EP22213961.0

申请日：2022-12-15

Applicant: STMicroelectronics S.r.l.

Inventor： BARBIERI, Andrea ,  VIDONI, Aldo ,  ZAMPROGNO, Marco

IPC: H02M3/157 ,  H02M1/00

Abstract: A DC-DC boost converter includes an inductor (L) coupled between an input voltage (Vin) and an input node (Nn), a diode (D1) coupled between the input node and an output node (No), and an output capacitor (C1) coupled between the output node and ground such that an output voltage (VBOOST) is formed across the output capacitor. A switch (Sw) selectively couples the input node to ground in response to a drive signal (Vdrive). Control loop circuitry (Vfbk, 15') includes an error amplifier (17') to generate an analog error voltage (Verr) based upon a comparison of a feedback voltage (Vfbk) to a reference voltage (Vref), the feedback voltage being indicative of the output voltage, a quantizer (21) to quantize the analog error voltage to produce a digital error signal (Err), and a drive voltage generation circuit (22) to generate the drive signal as having a duty cycle based upon the digital error signal.

公开(公告)号：EP4203281A1

公开(公告)日：2023-06-28

申请号：EP22211223.7

申请日：2022-12-02

Applicant: STMicroelectronics S.r.l.

Inventor： VIDONI, Aldo ,  BARBIERI, Andrea ,  CONSIGLIERI, Franco

IPC: H02M1/00 ,  H02M3/156

Abstract: A DC-DC boost converter (11) includes an inductor (L) coupled between an input voltage (Vin) and an input node (Nn), a first path coupled between the input node (Nn) and a first output node (N1) at which a first output voltage (VBOOSTL) is generated, and a second path coupled between the input node (Nn) and a second output node (N2) at which a second output voltage (VBOOSTR) is generated. The DC-DC boost converter (11) operates in a first operating phase where the first path boosts the first output voltage (VBOOSTL) and where the second path is kept from boosting the second output voltage (VBOOSTR) 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 (VBOOSTR) and where the first path is kept from boosting the first output voltage (VBOOSTL) by the second path not being coupled to the first path.