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公开(公告)号：FR2842316A1
公开(公告)日：2004-01-16
申请号：FR0208624
申请日：2002-07-09
Applicant: ST MICROELECTRONICS SA
Inventor： PONS ALEXANDRE , BERNARD CHRISTOPHE
Abstract: The linear regulator (30) has a control unit (35) and output circuit (31) to supply a load (1) and smoothing capacitor (11). The output circuit consists of two MOS transistors (32,33) which supply an output terminal (OUT) and are controlled by connections to their grids (G1,G2) from the input/output stage (36) of the control unit. The input/output stage uses data from a reference unit (37) and the output circuit for regulation
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公开(公告)号：FR2819904A1
公开(公告)日：2002-07-26
申请号：FR0100745
申请日：2001-01-19
Applicant: ST MICROELECTRONICS SA
Inventor： HARMON CECILE , BERNARD CHRISTOPHE , PONS ALEXANDRE
Abstract: The invention concerns a voltage regulator having an output terminal (O) adapted to be connected to a load (R, C), comprising a device (1) limiting the current (Iout) passing through the load to a threshold current (It1) if the output terminal potential (Vout) is lower than a threshold potential (Vt), and to a second threshold current (It2) is higher than the first threshold current if the output terminal potential (Vout) is higher than the threshold potential (Vt).
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公开(公告)号：DE602005000736D1
公开(公告)日：2007-05-03
申请号：DE602005000736
申请日：2005-07-13
Applicant: ST MICROELECTRONICS SA
Inventor： PONS ALEXANDRE , GRIGIS FABIENNE
Abstract: The circuit has a low drop out voltage regulator with an output stage of an operational amplifier (AMP). A power stage has a main power transistor controlled by AMP`s main control voltage, and a sub-part with p identical power modules (module 1-module n), where p is less than/equal to n. The modules have p auxiliary power transistors controlled by p auxiliary control voltages, where p is chosen based on a desired maximum output current. The operational amplifier (AMP) has a main output and n auxiliary outputs to supply the main control voltage and n auxiliary control voltages.
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公开(公告)号：FR2873216A1
公开(公告)日：2006-01-20
申请号：FR0407853
申请日：2004-07-15
Applicant: ST MICROELECTRONICS SA
Inventor： PONS ALEXANDRE , GRIGIS FABIENNE
IPC: G05F3/24
Abstract: Le régulateur (LDO) comprend un étage de sortie (EtS) de l'amplificateur (AMP) qui comporte une sortie principale et n sortie auxiliaires aptes à délivrer respectivement une tension de commande principale (VGPRINC) et n tensions de commande auxiliaires (VG1, ..., VGn) ; et un étage de puissance (EtP) qui comporte un transistor de puissance principal (PMosPrinc), commandé sur sa grille par la tension de commande principale (VGPRINC), et p modules de puissance (module 1, ..., module n) topologiquement identiques avec p inférieur ou égal à n, comportant respectivement p transistors de puissances auxiliaires (PMos1, ..., PMosn) respectivement commandé sur leur grille par p tensions de commande auxiliaires (VG1, ..., VGn). Le nombre p est choisi en fonction d'un courant de sortie maximum désiré.
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公开(公告)号：FR2819904B1
公开(公告)日：2003-07-25
申请号：FR0100745
申请日：2001-01-19
Applicant: ST MICROELECTRONICS SA
Inventor： HARMON CECILE , BERNARD CHRISTOPHE , PONS ALEXANDRE
Abstract: A voltage regulator having an output terminal adapted to being connected to a load, including a device for limiting the current flowing through the load to a first threshold current if the voltage of the output terminal is lower than a threshold voltage, and to a second current threshold higher than the first current threshold if the voltage of the output terminal is greater than the threshold voltage.
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Patent Agency Ranking
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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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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