公开(公告)号：JP2004289993A

公开(公告)日：2004-10-14

申请号：JP2003400931

申请日：2003-12-01

Applicant: St Microelectronics Sa ,  エスティマイクロエレクトロニクス エスエー

Inventor： PREMONT CHRISTOPHE ,  TALLARON LOUIS ,  TROCHUT SEVERIN

IPC: H02M3/155 ,  H02M3/157 ,  H02M3/158

CPC classification number: H02M3/157 ,  H02M3/1584 ,  Y10T307/696 ,  Y10T307/702

Abstract: PROBLEM TO BE SOLVED: To provide a method for controlling a switch mode power supply having only one induction element and a plurality of outputs. SOLUTION: In the control method of a switch mode power supply provided with a controllable period switching cell (SC) and having only one induction element (L) and a plurality of outputs, a total power level corresponding to the sum of individual power levels required by all outputs (OUTi), respectively, during each conduction cycle is thrown into the induction element (L), outputs requiring non-zero individual power levels are selected continuously for all cycles in the same specified order, and corresponding individual power levels are generated for respective outputs thus selected. COPYRIGHT: (C)2005,JPO&NCIPI

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

IPC: H02M3/158 ,  H03K3/011 ,  H03K4/502 ,  H03K4/12 ,  G05F1/10 ,  G05F3/08 ,  H02M3/156 ,  H04M19/00

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.

公开(公告)号：GB2385472B

公开(公告)日：2006-06-28

申请号：GB0301963

申请日：2003-01-28

Applicant: ST MICROELECTRONICS SA

Inventor： PREMONT CHRISTOPHE ,  CHESNEAU DAVID ,  BERNARD CHRISTOPHE

IPC: H03K4/502 ,  H02M3/158 ,  H03K3/011

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.

公开(公告)号：GB2385472A

公开(公告)日：2003-08-20

申请号：GB0301963

申请日：2003-01-28

Applicant: ST MICROELECTRONICS SA

Inventor： PREMONT CHRISTOPHE ,  CHESNEAU DAVID ,  BERNARD CHRISTOPHE

IPC: H02M3/158 ,  H03K3/011 ,  H03K4/502 ,  H03K4/08

Abstract: The electronic device includes a ramp capacitor CAP1 having a first terminal connected to a power supply voltage VBAT, and generator means 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 means include a constant current source SCC connected to the second terminal B12 of the ramp capacitor CAP1 and auxiliary means MAX adapted in the presence of a transient variation of the power supply voltage to determine the transient current flowing in said ramp capacitor and generated by said transient variation and to deliver to the second terminal B12 of the ramp capacitor CAP1 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. The method is applied to a step-down switching regulator in a mobile phone.

公开(公告)号：FR2835664A1

公开(公告)日：2003-08-08

申请号：FR0201302

申请日：2002-02-04

Applicant: ST MICROELECTRONICS SA

Inventor： PREMONT CHRISTOPHE ,  CHESNEAU DAVID ,  BERNARD CHRISTOPHE

IPC: H02M3/158 ,  H03K3/011 ,  H03K4/502 ,  H03K4/12 ,  G05F1/10 ,  G05F3/08 ,  H02M3/156 ,  H04M19/00

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.

公开(公告)号：FR2848356A1

公开(公告)日：2004-06-11

申请号：FR0215369

申请日：2002-12-05

Applicant: ST MICROELECTRONICS SA

Inventor： PREMONT CHRISTOPHE ,  TALLARON LOUIS ,  TROCHUT SEVERIN

IPC: H02M3/157 ,  H02M3/158 ,  H02M3/155 ,  H02M1/08 ,  H04Q7/32 ,  H04M19/08 ,  H02M3/02

Abstract: The power supply circuit uses a single inductive element, and this supplied with pulses of energy, the width of the pulse being such as to provide different output voltages as required in a cyclical process. The system enables efficient delivery of energy at different voltages as required by different parts of the circuit. The chopped supply comprise a switching cell (CCM) which is cyclically controlled, a single inductive element, L, and several individually selectable outputs. In the course of each cycle of conduction, energy in injected into the inductive element, L. The total energy injected corresponds to the sum of the elementary energies required respectively by all the outputs (OUTi) in the course of this cycle. The device successively selects the outputs requiring non-null elementary energy, in a predetermined order which is the same for all cycles, and the corresponding elementary energy is supplied to each output.