公开(公告)号：EP3361636B1

公开(公告)日：2020-07-29

申请号：EP17187803.6

申请日：2017-08-24

Applicant: STMicroelectronics S.r.l.

Inventor： RAMORINI, Stefano ,  NICOLLINI, Germano ,  CATTANI, Alberto ,  GASPARINI, Alessandro

IPC: H03K4/06 ,  H03F3/217

公开(公告)号：EP3002863A1

公开(公告)日：2016-04-06

申请号：EP15185652.3

申请日：2015-09-17

Applicant: STMicroelectronics S.r.l.

Inventor： RAMORINI, Stefano ,  GASPARINI, Alessandro ,  CATTANI, Alberto

IPC: H02M3/158 ,  H02M1/00 ,  H02J7/34

Abstract: An energy harvesting circuit (240) receives an input voltage from a transducer and uses a single inductor (L) operating in a DC-DC converter charging mode to generate charging current at a first output (252) coupled to an energy storage device where a supply voltage is stored. The energy harvesting circuit further receives the supply voltage from the energy storage device and uses the same single inductor operating in a DC-DC converter regulating mode to generate load current at a second output (254) where a regulated load voltage is provided. The energy harvesting circuit (240) switches between the charging mode and the regulating mode in accordance with a discontinuous mode (DCM) control process.

Abstract translation: 能量收集电路（240）从换能器接收输入电压并使用以DC-DC转换器充电模式工作的单个电感器（L），以在耦合到能量存储装置的第一输出（252）产生充电电流，其中 电源电压被存储。 能量收集电路还从能量存储装置接收电源电压，并使用以DC-DC转换器调节模式工作的相同的单个电感器，以在提供调节的负载电压的第二输出（254）产生负载电流。 能量收集电路（240）根据不连续模式（DCM）控制过程在充电模式和调节模式之间切换。

公开(公告)号：EP3828662A1

公开(公告)日：2021-06-02

申请号：EP20207694.9

申请日：2020-11-16

Applicant: STMicroelectronics S.r.l.

Inventor： RAMORINI, Stefano ,  NICOLLINI, Germano

IPC: G05F3/30 ,  G05F3/26

Abstract: A bandgap circuit (10), for use in AMOLED display devices, for instance, comprises a supply node (V SUPPLY ) as well as a first bipolar transistor (Q 1 ) and a second bipolar transistor (Q 2 ), having their base terminals jointly coupled to a bandgap node to provide a bandgap voltage (V BG ) at the bandgap node. A first current generator (121a, 121b) and a second current generator (122a, 122b) coupled to the supply node (V SUPPLY ) are provide to supply a first current (I 1 ) and a second current (I 2 ) to a first circuit node (A) and a second circuit node (B), with the current (I 2 ) of the second current generator mirroring the current (I 1 ) of the first current generator. A third circuit node (D) is coupled to the current flow path through the first bipolar transistor (Q 1 ) via a first resistor (R 1 ) and coupled to ground (GND) via a second resistor (R 2 ), respectively. The third circuit node (D) is also coupled to the current flow path through the second bipolar transistor (Q 2 ) so that the second resistor (R 2 ) is traversed by a current which is the sum of the currents (I 1 , I 2 ) through the bipolar transistors (Q 1 and Q 2 ). Intermediate the current generators (121a, 121b; 122a, 122b) and the bipolar transistors (Q 1 , Q 2 ) a decoupling stage (200) is provided comprising a first (N 1 ) and a second (N 2 ) cascode decoupling transistor having their control terminals jointly coupled to a fourth circuit node (C) sensitive to the ground-referred bandgap voltage (V BG ).

公开(公告)号：EP3002863B1

公开(公告)日：2020-05-06

申请号：EP15185652.3

申请日：2015-09-17

Applicant: STMicroelectronics S.r.l.

Inventor： RAMORINI, Stefano ,  GASPARINI, Alessandro ,  CATTANI, Alberto

IPC: H02M3/158 ,  H02M1/00 ,  H02J7/34 ,  H02J7/00

公开(公告)号：EP3703236A1

公开(公告)日：2020-09-02

申请号：EP20171034.0

申请日：2015-09-17

Applicant: STMicroelectronics S.r.l.

Inventor： RAMORINI, Stefano ,  GASPARINI, Alessandro ,  CATTANI, Alberto

IPC: H02M3/158 ,  H02M1/00 ,  H02J7/34

Abstract: An energy harvesting circuit (240') receives an input voltage from a transducer and uses a single inductor (L) operating in a DC-DC converter charging mode to generate charging current at a plurality of storage outputs (252(1), 252(2)) coupled to respective energy storage devices where a supply voltage is stored. The circuit further receives the supply voltage from the energy storage devices and uses the same single inductor operating in a DC-DC converter regulating mode to generate load current at a load output (254) where a regulated load voltage is provided. To this end, the circuit (240') comprises a set of switches (S1-S8) that can be actuated for selective connection of the inductor in a buck-boost mode to charge the energy storage devices, and in a regulating mode to generate load current to provide a regulated output voltage to the load output. The control circuit is configured to control switching between the charging mode and the regulating mode in accordance with a discontinuous mode (DCM) hysteretic control process.

公开(公告)号：EP3361636A1

公开(公告)日：2018-08-15

申请号：EP17187803.6

申请日：2017-08-24

Applicant: STMicroelectronics S.r.l.

Inventor： RAMORINI, Stefano ,  NICOLLINI, Germano ,  CATTANI, Alberto ,  GASPARINI, Alessandro

IPC: H03K4/06 ,  H03F3/217

Abstract: A triangular-voltage generator (20) for a class-D amplifier circuit (1) has an input terminal (IN) designed to receive a first power supply voltage (V HV ) and an output terminal (OUT) designed to supply a triangular-wave voltage (V TRI ) having a repetition period (T S ), and is provided with an operational amplifier (21) in integrator configuration, having a first input, a second input and an output coupled to the output terminal (OUT). The second input is designed to receive a reference voltage (V REF ), as a function of the first power supply voltage (V HV ), and the first input is designed to be selectively and alternately connected to the input terminal (IN) during a first half-period (T S /2) of the repetition period (T S ), via a first resistor element (R i1 ), and to a reference terminal (gnd) during a second half-period (T S/ 2) of the repetition period (T S ), via a second resistor element (R i2 ).