公开(公告)号：US20010030530A1

公开(公告)日：2001-10-18

申请号：US09826299

申请日：2001-04-04

Applicant: STMicroelectronics S.A.

Inventor： Nicolas Marty

IPC: G05F001/40

CPC classification number: G05F1/565 ,  G05F1/575

Abstract: A voltage regulator includes a regulation MOS transistor and an amplifier providing an output for driving a gate of the regulation MOS transistor. The amplifier drives the gate based upon a difference between a reference voltage and a feedback voltage. The voltage regulator may further include a circuit for making the amplifier switch to a standby mode with low current consumption when the difference between the supply voltage and the output voltage of the regulator is below a first threshold. This is done while maintaining, at the gate of the regulation transistor, a voltage that keeps the regulation transistor on. The present invention is particularly applicable to the management of power supplies in portable telephones.

Abstract translation: 电压调节器包括调节MOS晶体管和提供用于驱动调节MOS晶体管的栅极的输出的放大器。 放大器基于参考电压和反馈电压之间的差异驱动门。 电压调节器还可以包括用于当电源电压和调节器的输出电压之间的差低于第一阈值时使放大器开关进入具有低电流消耗的待机模式的电路。 这是在保持调节晶体管的栅极处保持调节晶体管导通的电压的同时完成的。 本发明特别适用于便携式电话中的电源的管理。

公开(公告)号：US20020093322A1

公开(公告)日：2002-07-18

申请号：US10017911

申请日：2001-12-14

Applicant: STMicroelectronics S.A.

Inventor： Nicolas Marty ,  Regis Robert

IPC: G05F001/40

CPC classification number: G05F1/575 ,  G05F1/565

Abstract: A voltage regulating device includes a comparison circuit for comparing a voltage proportional to an output voltage to a fixed reference voltage. The fixed reference voltage is received on a first input and the voltage proportional to an output voltage is received on a second input. The voltage regulating device further includes a variable resistance-forming circuit controlled by the output of the comparison circuit and disposed so that the output voltage remains substantially constant. The voltage regulating device may be supplied with a variable input voltage. The voltage regulating device further includes a second comparison circuit so that the output voltage remains substantially constant if the input voltage is greater than a threshold, and substantially equal to the input voltage if the input voltage is less than the threshold.

Abstract translation: 电压调节装置包括比较电路，用于将与输出电压成比例的电压与固定参考电压进行比较。 在第一输入端接收固定参考电压，并在第二输入端接收与输出电压成比例的电压。 电压调节装置还包括由比较电路的输出控制的可变电阻形成电路，并被布置为使得输出电压基本保持恒定。 可以向电压调节装置提供可变的输入电压。 电压调节装置还包括第二比较电路，使得如果输入电压大于阈值，则输出电压保持基本恒定，并且如果输入电压小于阈值则基本上等于输入电压。

公开(公告)号：US20030085693A1

公开(公告)日：2003-05-08

申请号：US10253399

申请日：2002-09-24

Applicant: STMicroelectronics S.A.

Inventor： Nicolas Marty

IPC: G05F001/44

CPC classification number: G05F1/573 ,  G05F1/565 ,  G05F1/575

Abstract: A voltage regulator includes a power transistor for providing an electrical current to a load circuit connected to an output of the regulator. The delivered current is limited by a limitation circuit within the regulator. A stabilization resistor is connected between the power transistor and the output of the regulator. The limitation circuit includes a fixed-voltage generator, and a comparator for comparing the voltage generated in the stabilization resistor by the output current of the regulator with the fixed voltage. The output of the comparator controls an adjustment transistor that limits the current delivered by the power transistor.

Abstract translation: 电压调节器包括用于向连接到调节器的输出端的负载电路提供电流的功率晶体管。 传输的电流受调节器内的限制电路的限制。 稳压电阻连接在功率晶体管和调节器的输出端之间。 限制电路包括固定电压发生器和用于将稳压电阻器中产生的电压与调节器的输出电流与固定电压进行比较的比较器。 比较器的输出控制限制由功率晶体管传递的电流的调节晶体管。

公开(公告)号：US20010050546A1

公开(公告)日：2001-12-13

申请号：US09827295

申请日：2001-04-05

Applicant: STMicroelectronics S.A.

Inventor： Nicolas Marty

IPC: G05F001/40

CPC classification number: G05F1/565 ,  G05F1/575

Abstract: A voltage regulator includes a regulation MOS transistor with low serial resistance having a first terminal connected to a voltage source and a second terminal connected to the output of the voltage regulator and an amplifier having an output driving a gate of the transistor. The gate is driven based upon a difference between a reference voltage and a feedback voltage. The regulator may also include an anti-overshoot switch with a first terminal connected to the gate of the regulation MOS transistor and a second terminal is taken to a potential for turning the regulation MOS transistor off. A switch controller closes the switch when the output voltage of the regulator is higher than a first threshold. The first threshold may be higher than the nominal value of the output voltage.

Abstract translation: 电压调节器包括具有低串联电阻的调节MOS晶体管，其具有连接到电压源的第一端子和连接到电压调节器的输出端的第二端子和具有驱动晶体管的栅极的输出的放大器。 基于参考电压和反馈电压之间的差异来驱动门。 调节器还可以包括具有连接到调节MOS晶体管的栅极的第一端子的反过冲开关，并且将第二端子置于使调节MOS晶体管截止的电位。 当调节器的输出电压高于第一阈值时，开关控制器关闭开关。 第一阈值可能高于输出电压的标称值。