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公开(公告)号：FR2819652B1
公开(公告)日：2003-05-30
申请号：FR0100597
申请日：2001-01-17
Applicant: ST MICROELECTRONICS SA
Inventor： HAMON CECILE , BERNARD CHRISTOPHE , PONS ALEXANDRE
Abstract: A voltage regulator having an output terminal provided for being connected to a load, including an amplifier having its inverting input connected to a reference voltage, and its non-inverting input connected to the output terminal, a charge capacitor arranged between the output terminal and a first supply voltage, first and second voltage-controlled switches each arranged to connect a second supply voltage and the output terminal, and a control means adapted to providing a voltage depending on the output voltage of the amplifier, on the one hand, to the gate of the first switch and, on the other hand, when the current flowing through the first switch reaches a predetermined threshold, to the gate of the second switch.
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公开(公告)号：FR2819652A1
公开(公告)日：2002-07-19
申请号：FR0100597
申请日：2001-01-17
Applicant: ST MICROELECTRONICS SA
Inventor： HAMON CECILE , BERNARD CHRISTOPHE , PONS ALEXANDRE
Abstract: The voltage regulator comprises an output terminal (O) connected to a resistive load (R) in parallel with a capacitor (C), a differential amplifier (2) whose positive input (IN+) is connected to the output terminal (O) and negative input (IN-) to a reference potential (Vref), two controlled switches in the form of transistors (T2,T3) connected between the supply potential (Vbat) terminal and the output terminal (O), and a control circuit (4) delivering a potential dependent on the output potential of differential amplifier to the gate of the first transistor (T2), and when the current (I2) through the first transistor reaches a predetermined threshold, to the gate of the second transistor (T3). The current (I2) through the first transistor (T2) is not greater than the predetermined threshold current (IOs). The amplifier (2) is powered between the supply potential (Vbat) and the ground (GND) potential. The resistive load (R) in parallel with the capacitor (C) is connected between the output terminal (O) and the ground. The transistors (T2,T3) are of p-MOS type, and the gate of transistor (T3) is larger than that of transistor (T2). The control circuit (4) contains two bipolar transistors of n-p-n type whose collectors are connected directly to the output terminals (COM2, COM3) and to the supply voltage (Vbat) by the intermediary of impedances, where the base of first transistor is connected to the collector, the base of second transistor is connected to the ground by the intermediary of a current source, the emitters are connected to the ground by the intermediary of an n-MOS transistor whose gate is connected directly to the input terminal (COM), and a p-MOS transistor connected as a diode between the base of second transistor and the supply voltage.
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公开(公告)号：FR2818762A1
公开(公告)日：2002-06-28
申请号：FR0016978
申请日：2000-12-22
Applicant: ST MICROELECTRONICS SA
Inventor： HAMON CECILE , BERNARD CHRISTOPHE , PONS ALEXANDRE
Abstract: The invention concerns a voltage regulator having an output terminal (S) designed to be connected to a load (R), comprising an operational amplifier (4) whereof the non-inverting input is connected to a first reference potential (Vref), and whereof the inverting input is connected to the output terminal (S), and inverting stage (6) whereof the input is connected to the operational amplifier output, a power switch (T1) controlled by the inverter stage (6) output, arranged between the output terminal (S) and a supply potential (Vbat), and a load capacitor (C) arranged between the output terminal (S) and a supply reference potential (GND), including means (7) for reducing the effective output impedance of the operational amplifier (4).
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Patent Agency Ranking
公开(公告)号：FR2835664B1
公开(公告)日：2004-04-16
申请号：FR0201302
申请日：2002-02-04
Applicant: ST MICROELECTRONICS SA
Inventor： PREMONT CHRISTOPHE , CHESNEAU DAVID , BERNARD CHRISTOPHE
Abstract: A ramp capacitor CAP1 has a first terminal connected to a power supply voltage VBAT. A generator circuit is connected to a second terminal of the ramp capacitor and adapted to generate a voltage ramp at the terminals of the ramp capacitor. The generator circuit includes a constant current source SCC connected to the second terminal B12 of the ramp capacitor CAP1 and auxiliary circuit MAX adapted in the presence of a transient variation of the power supply voltage to determine the transient current flowing in the ramp capacitor and generated by the transient variation. Responsive thereto, delivery is made to the second terminal B12 of the ramp capacitor CAP1 of a charging current equal to the algebraic sum of the constant current delivered by the constant current source and an auxiliary current equal and opposite to the transient current.
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公开(公告)号：AT376256T
公开(公告)日：2007-11-15
申请号：AT03749913
申请日：2003-05-02
Applicant: ST MICROELECTRONICS SA
Inventor： CATHELIN ANDREA , BERNARD CHRISTOPHE , DELPECH PHILIPPE , TROADEC PIERRE , SALAGER LAURENT , GARNIER CHRISTOPHE
IPC: H01L23/52 , H01L23/66 , H01G17/00 , H01L21/3205 , H01L21/4763 , H01L21/76 , H01L21/822 , H01L23/48 , H01L23/522 , H01L23/58 , H01L27/04 , H04Q7/20
Abstract: An electronic circuit includes a substrate. A capacitor and at least one semiconductor component are supported by a surface of the substrate. A substantially planar screen, oriented parallel to the surface of the substrate and made of metallic material, is placed between the capacitor and the semiconductor component. Preferably, the semiconductor component is placed in proximity to the surface of the substrate and several superposed layers of insulating material cover the surface of the substrate and the semiconductor component. The capacitor is then placed within at least one layer of insulating material above the semiconductor component, and the screen is placed within an intermediate layer of insulating material between the layer incorporating the capacitor and the surface of the substrate.
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公开(公告)号：FR2819064B1
公开(公告)日：2003-04-04
申请号：FR0017296
申请日：2000-12-29
Applicant: ST MICROELECTRONICS SA
Inventor： HAMON CECILE , BERNARD CHRISTOPHE , PONS ALEXANDRE
Abstract: A voltage regulator having an output terminal adapted to being connected to a load, including an operational amplifier having its non-inverting input connected to a reference voltage, and its inverting input connected to the output terminal, an inverting amplifier having its input connected to the output of the operational amplifier, a capacitive impedance connected between the input and the output of the inverting amplifier, a power switch controlled by the output of the inverter amplifier, arranged to connect the output terminal to a first supply voltage, said capacitive impedance including a short-circuitable portion associated with active short-circuit means when the current flowing through the load is greater than a predetermined current.
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公开(公告)号：FR2818762B1
公开(公告)日：2003-04-04
申请号：FR0016978
申请日：2000-12-22
Applicant: ST MICROELECTRONICS SA
Inventor： HAMON CECILE , BERNARD CHRISTOPHE , PONS ALEXANDRE
Abstract: A voltage regulator having an output terminal adapted to being connected to a load, including an operational amplifier having its non-inverting input connected to a first reference voltage, and its inverting input connected to the output terminal, an inverting stage having its input connected to the output of the operational amplifier, a power switch controlled by the output of the inverter stage, arranged between the output terminal and a supply voltage, and a charge capacitor arranged between the output terminal and a reference supply voltage, including a means for reducing the effective output impedance of the operational amplifier.
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公开(公告)号：FR2819064A1
公开(公告)日：2002-07-05
申请号：FR0017296
申请日：2000-12-29
Applicant: ST MICROELECTRONICS SA
Inventor： HAMON CECILE , BERNARD CHRISTOPHE , PONS ALEXANDRE
Abstract: The invention concerns a voltage regulator having an output terminal (2) designed to be connected to a load (R), comprising an operational amplifier (4) whereof the non-inverting input is connected to a reference potential (Vref), and the inverting input is connected to the operational amplifier output, a capacitive impedance connected between the inverting amplifier input and output, a power switch (T1) controlled by the inverting amplifier output, arranged so as to connect the output terminal (2) to a first supply potential (Vbat), said capacitive impedance comprising a portion (C2) capable of being shorted associated with active shorting means (8, 10) when the current flowing through the load is higher that a predetermined current.
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