公开(公告)号：EP4340199A1

公开(公告)日：2024-03-20

申请号：EP23196890.0

申请日：2023-09-12

Applicant: STMicroelectronics S.r.l.

Inventor： FLORIANI, Ivan ,  BRIGO, Elena

IPC: H02M1/38 ,  H02M3/158 ,  H02M7/5387

Abstract: Control module for an electronic circuit (2,4,16,18;DH1,DL1,GH1,GL1) which includes at least a first and a second switch (2,4;GH1,GL1), including: an event detector stage (130), which receives logic electrical signals (PWM,DCM,OV,REG_MOD;sROT,sSENSE); a pulse generator circuit (132), which is coupled to the event detector stage and generates a dead time signal (sPULSE) as a function of edges of the logic electrical signals detected by the event detector stage, the dead time signal including pulses delimited, each, by an edge of a first type and by a subsequent edge of a second type; a combinatorial sampling stage (134,186,189; 134,237), which generates, on the basis of a truth table and the logic electrical signals, at least a first and a second sampled preliminary signal (CMD_HS_sam, CMD_LS_sam), whose values are updated at each edge of the first type of the dead time signal; and an update stage (188,190;238), which, at each pulse of the dead time signal, updates the values of the first and the second control signals as a function of the first and the second sampled preliminary signals, subsequently to the edge of the first type or subsequently to the edge of the second type of the pulse of the dead time signal. Figure 3

公开(公告)号：EP4333281A1

公开(公告)日：2024-03-06

申请号：EP23183518.2

申请日：2023-07-05

Applicant: STMicroelectronics S.r.l.

Inventor： CASTORINA, Stefano ,  BRIGO, Elena

IPC: H02M1/00 ,  H02M1/32 ,  H02M3/158

Abstract: Control module for a buck-boost switching converter (101), which includes an inductor (12) and a shunt resistor (14) and is coupled to a load (13) which draws a load current (I LOAD ). The control module includes: a control stage (18,19) which performs charge (T' ON ) and discharge (T' OFF ) cycles of the inductor (12), during which the inductor (12) is traversed by an inductor current (I L ), the shunt resistor (14) being subject to a respective voltage (v dcm ) and being traversed by a resistor current (i dcm ); a first comparator stage (17A), which generates a first signal (sV1), which is indicative of the direction of the resistor current (i dcm ) and is provided to the control stage; a filtering circuit (102,104,106) of low-pass type, which generates a filtered electrical quantity (V filt ) as a function of the voltage (v dcm ) on the shunt resistor (14); a second comparator stage (52,56,117), which generates a second signal (sVx) indicative of a comparison between the filtered electrical quantity (V filt ) and a reference electrical quantity (V th ); and a detection stage (52,56) which detects the occurrence of an overcurrent in the load (13), on the basis of the second signal (sVx).

公开(公告)号：EP4113815A1

公开(公告)日：2023-01-04

申请号：EP22180463.6

申请日：2022-06-22

Applicant: STMicroelectronics S.r.l.

Inventor： FLORIANI, Ivan ,  BRIGO, Elena

IPC: H02M3/158 ,  H02M1/00 ,  G05F1/575

Abstract: A control device (62) for a switching voltage regulator (52) configured to operate in a plurality of operating conditions and having a switching circuit (60). The control device has a first input configured to receive a measurement signal representative of an output voltage of the switching circuit; a state-determination block (89), coupled to the first input and configured to generate an actual operating condition signal (MOD, DIAG) of the switching voltage regulator; and a driving signals generation module (91, 92, 94) configured to generate at least one switching command signal for the switching circuit from an error signal representative of a difference between the output voltage and a nominal voltage. The driving signals generation module has an error-compensation circuit (91, 100) having a transfer function and configured to generate a control signal (Vc, Ic, Ioc) from the error signal and the actual operating condition signal, wherein the control signal is a function of the actual operating condition of the switching voltage regulator.

公开(公告)号：EP4297258A1

公开(公告)日：2023-12-27

申请号：EP23178174.1

申请日：2023-06-08

Applicant: STMicroelectronics S.r.l.

Inventor： CASTORINA, Stefano ,  BRIGO, Elena ,  FLORIANI, Ivan

IPC: H02M1/00 ,  H02M3/158

Abstract: The control device (55) is for a switching voltage regulator (50) having a switching circuit (53). The control device receives an input voltage (V in ) and an output voltage (V out ) of the switching circuit and a measurement signal indicative of a current (I L ) of the switching circuit. The control device has: a feedback module (92) that detects an error signal (V E ) indicative of a difference between the output voltage and a nominal voltage (V ref ), and provides a control signal (I c ) as a function of the error signal; a threshold-correction module (98, 100, 102) that provides an offset signal (I bias ) and a ramp signal (I slope ); and a driving-signal generation module (94, 96, 97) coupled to the feedback module and to the threshold-correction module, which receives the measurement signal, compares the measurement signal with a threshold (I th ) and, in response, provides a modulated signal (PWM, T1, T2, T3, T4) for driving the switching circuit. The threshold is a function of the control signal, of the offset signal, and of the ramp signal. The threshold-correction module provides the offset signal as a function of the input voltage and/or of the output voltage.

公开(公告)号：EP4274070A1

公开(公告)日：2023-11-08

申请号：EP23170768.8

申请日：2023-04-28

Applicant: STMicroelectronics S.r.l.

Inventor： FLORIANI, Ivan ,  BRIGO, Elena

IPC: H02M1/00 ,  H02M3/158 ,  H02M1/32

Abstract: The control device (55) is for a switching voltage regulator (50) of the buck or buck-boost type. The regulator has a switching circuit (53) with a first side (88) and a second side (89). The control device has: a first detector (94) of a first measurement signal (V ds ) indicative of a current (I ds ) flowing in the first side, and providing a first comparison signal (COMP_HS) as a function of a first threshold (V th,HS ); a second detector (95) of a second measurement signal (V RS ) indicative of a current (I RS ) flowing in the second side, and providing a second comparison signal (COMP_LS) as a function of a second threshold (V th,LS ); a driving-signals generation module (96) which generates a switching control signal (PWM) from the first comparison signal to drive the switching circuit; a calibration module (149) which receives an alert signal (COMP_HS, IMAX_FLAG) indicative of the first threshold (I th,HS , V th,HS ), compares the alert signal and the second comparison signal, and provides a calibration signal (CAL) in response; and a feedback module (92) which provides a control signal (I c,ds ) as a function of an error signal and of the calibration signal. The first detector modifies the first threshold from the loop control signal. The first threshold is therefore a function of the calibration signal.