-
公开(公告)号：US12287663B2
公开(公告)日：2025-04-29
申请号：US17707321
申请日：2022-03-29
Inventor： Vratislav Michal , Regis Rousset
IPC: G05F3/30
Abstract: A band-gap circuit for generating a bandgap reference signal includes a first bipolar transistor and a second bipolar transistor of a same type among PNP and NPN types. The first and second bipolar transistors are configured to generate a current varying proportionally with the temperature. A capacitor is connected between a base and an emitter of one or both of the first and second bipolar transistors.
-
公开(公告)号：US11994537B2
公开(公告)日：2024-05-28
申请号：US17743785
申请日：2022-05-13
Applicant: STMicroelectronics (Grenoble 2) SAS
Inventor： Vratislav Michal
CPC classification number: G01R15/16 , G01R19/0084
Abstract: In an embodiment, a circuit includes a first branch coupled between a first node and a second node, the first branch including a first ceramic capacitor, the first ceramic capacitor including terminals configured to receive a first voltage applied therebetween. The circuit further includes a second branch coupled between the first node and a third node, the second branch including a second ceramic capacitor that is substantially identical to the first ceramic capacitor, the second ceramic capacitor including terminals configured to receive a second voltage applied therebetween. The circuit further includes a control circuit configured to modify the second voltage until a first current passing through the second node is substantially equal to a second current passing through the third node.
-
公开(公告)号：US10520554B2
公开(公告)日：2019-12-31
申请号：US16269331
申请日：2019-02-06
Inventor： Vratislav Michal , Michel Ayraud
Abstract: A circuit includes an amplifier having a first power terminal configured to be coupled to a supply voltage and a second power terminal configured to be coupled to a reference potential. The circuit further includes a first impedance element coupled between a first input terminal of the amplifier and a first output terminal of the amplifier. The circuit additionally includes a second impedance element coupled between the first input terminal and the reference potential. The amplifier is configured to output a first voltage at a second output terminal of the amplifier in response to the supply voltage being greater than an output voltage at the first output terminal of the amplifier. The amplifier is further configured to output a second voltage at the second output terminal of the amplifier in response to the supply voltage being less than the output voltage at the first output terminal of the amplifier.
-
公开(公告)号：US09804616B2
公开(公告)日：2017-10-31
申请号：US14616413
申请日：2015-02-06
Applicant: STMicroelectronics (Grenoble 2) SAS
Inventor： Vratislav Michal
Abstract: A switched-mode power supply device includes a power switch configured to transfer power from a supply line to a load in switched-mode; a first oscillator configured to operate at a frequency proportional to a voltage of the supply line; a second oscillator configured to operate at a frequency proportional to a voltage of the load; and a regulator configured to operate the power switch according to a duty cycle based on a ratio between the first and second oscillator frequencies.
-
公开(公告)号：US20230327621A1
公开(公告)日：2023-10-12
申请号：US18189665
申请日：2023-03-24
Inventor： Vratislav Michal
CPC classification number: H03F3/45179 , H03F1/0205
Abstract: In an embodiment a device includes an input node configured to receive a first current, an output node configured to provide a second current determined by the first current, a first resistor having a first terminal connected to the input node and a second terminal coupled to a first node configured to receive a first supply voltage, a first MOS transistor having a source connected to the first node and a drain coupled to the output node of the device, a second resistor having a first terminal connected to a gate of the first MOS transistor, a biasing circuit configured to provide a biasing voltage on a second terminal of the second resistor and a first capacitor connected between the input node and the gate of the first MOS transistor.
-
Patent Agency Ranking
公开(公告)号：US20220390490A1
公开(公告)日：2022-12-08
申请号：US17743785
申请日：2022-05-13
Applicant: STMicroelectronics (Grenoble 2) SAS
Inventor： Vratislav Michal
Abstract: In an embodiment, a circuit includes a first branch coupled between a first node and a second node, the first branch including a first ceramic capacitor, the first ceramic capacitor including terminals configured to receive a first voltage applied therebetween. The circuit further includes a second branch coupled between the first node and a third node, the second branch including a second ceramic capacitor that is substantially identical to the first ceramic capacitor, the second ceramic capacitor including terminals configured to receive a second voltage applied therebetween. The circuit further includes a control circuit configured to modify the second voltage until a first current passing through the second node is substantially equal to a second current passing through the third node.
-
公开(公告)号：US10236842B2
公开(公告)日：2019-03-19
申请号：US15393485
申请日：2016-12-29
Inventor： Vratislav Michal , Michel Ayraud
Abstract: A circuit includes an amplifier having a first power terminal configured to be coupled to a supply voltage and a second power terminal configured to be coupled to a reference potential. The circuit further includes a first impedance element coupled between a first input terminal of the amplifier and a first output terminal of the amplifier. The circuit additionally includes a second impedance element coupled between the first input terminal and the reference potential. The amplifier is configured to output a first voltage at a second output terminal of the amplifier in response to the supply voltage being greater than an output voltage at the first output terminal of the amplifier. The amplifier is further configured to output a second voltage at the second output terminal of the amplifier in response to the supply voltage being less than the output voltage at the first output terminal of the amplifier.
-
公开(公告)号：US09793181B2
公开(公告)日：2017-10-17
申请号：US14659051
申请日：2015-03-16
Applicant: STMicroelectronics (Grenoble 2) SAS
Inventor： Vratislav Michal
Abstract: A method for calibrating a resistance value comprises the steps of measuring a value of a reference capacitor, and adjusting a variable resistor based on the measured value of the reference capacitor. The method may more specifically comprise the steps of directing a constant current through the reference capacitor during a reference time interval; after the reference time interval, directing the constant current through the variable resistor; and varying the variable resistor value progressively by varying a control signal until a voltage of the variable resistor reaches a voltage of the reference capacitor.
-
公开(公告)号：US11984796B2
公开(公告)日：2024-05-14
申请号：US17677806
申请日：2022-02-22
Applicant: STMicroelectronics (Grenoble 2) SAS
Inventor： Vratislav Michal
CPC classification number: H02M1/0095 , H02M3/07
Abstract: In an embodiment a power converter includes a first capacitor and a second capacitor coupled in series with the first capacitor, wherein the converter is configured to charge, during a first phase, the first and second capacitors by a supply voltage so that a voltage across terminals of each of the first and second capacitors is substantially equal to half the supply voltage and discharge, during a second phase, the second capacitor to a third capacitor.
-
公开(公告)号：US20190187218A1
公开(公告)日：2019-06-20
申请号：US16269331
申请日：2019-02-06
Inventor： Vratislav Michal , Michel Ayraud
IPC: G01R31/3835 , G01R31/36 , H03F3/45 , G01R1/30 , H03F1/02
CPC classification number: G01R31/3835 , G01R1/30 , G01R17/02 , G01R31/3646 , H03F1/0205 , H03F3/45179 , H03F3/45183 , H03F2200/129 , H03F2200/261 , H03F2200/471 , H03F2203/45151
Abstract: A circuit includes an amplifier having a first power terminal configured to be coupled to a supply voltage and a second power terminal configured to be coupled to a reference potential. The circuit further includes a first impedance element coupled between a first input terminal of the amplifier and a first output terminal of the amplifier. The circuit additionally includes a second impedance element coupled between the first input terminal and the reference potential. The amplifier is configured to output a first voltage at a second output terminal of the amplifier in response to the supply voltage being greater than an output voltage at the first output terminal of the amplifier. The amplifier is further configured to output a second voltage at the second output terminal of the amplifier in response to the supply voltage being less than the output voltage at the first output terminal of the amplifier.
-
-
-
-
-
-
-
-
-
Search Results
13
records
(took 0.014 seconds)
