公开(公告)号：US20140312867A1

公开(公告)日：2014-10-23

申请号：US14097796

申请日：2013-12-05

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Francesco PULVIRENTI ,  Santo Ilardo

IPC: G05F1/56

CPC classification number: G05F1/56 ,  G05F1/565

Abstract: A low drop out voltage regulator includes an operational transconductance amplifier configured to be supplied with a supply voltage of the regulator, receive as inputs a reference voltage and a feedback voltage, and generate an intermediate current based upon a difference between the reference voltage and the feedback voltage. A current-to-voltage amplification stage is configured to be supplied with a boosted voltage greater than the supply voltage from a high voltage line, receive as input the intermediate current, and generate a driving voltage that is changed based upon the intermediate current. A pass transistor is controlled with the driving voltage to keep constant on a second conduction terminal thereof a regulated output voltage. A feedback network generates the feedback voltage based on the regulated output voltage.

Abstract translation: 低压差稳压器包括：运算跨导放大器，被配置为提供调节器的电源电压，接收参考电压和反馈电压作为输入，并且基于参考电压和反馈之间的差产生中间电流 电压。 电流 - 电压放大级被配置为被提供大于来自高压线的电源电压的升压电压，作为输入接收中间电流，并且产生基于中间电流而改变的驱动电压。 通过驱动电压来控制传输晶体管，以在其第二导通端子上保持恒定的稳定的输出电压。 反馈网络基于稳压输出电压产生反馈电压。

公开(公告)号：US10534388B1

公开(公告)日：2020-01-14

申请号：US16361545

申请日：2019-03-22

Applicant: STMicroelectronics S.r.l.

Inventor： Santo Ilardo

IPC: G05F1/567 ,  H03K3/011 ,  G05F1/575 ,  H03F3/45

Abstract: A driver circuit includes a temperature sensor generating a first voltage representative of current operating temperature. An amplifier compares the first voltage to a second voltage representative of an upper threshold operating temperature, and generates a control signal based thereupon. A variable current source generates a load current from the control signal. The amplifier generates the control signal to cause the variable current source to generate the load current as having a magnitude equal to an upper threshold when the first voltage is less than the second voltage. The amplifier generates the control signal to cause the variable current source to generate the load current as having a magnitude that is decreasing until the first and second voltages are equal, and then generates the control signal to cause the variable current source to maintain the load current magnitude at a level at which the first and second voltages are equal.

公开(公告)号：US09223329B2

公开(公告)日：2015-12-29

申请号：US14097796

申请日：2013-12-05

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Francesco Pulvirenti ,  Santo Ilardo

IPC: G05F1/565 ,  G05F1/56

CPC classification number: G05F1/56 ,  G05F1/565

Abstract: A low drop out voltage regulator includes an operational transconductance amplifier configured to be supplied with a supply voltage of the regulator, receive as inputs a reference voltage and a feedback voltage, and generate an intermediate current based upon a difference between the reference voltage and the feedback voltage. A current-to-voltage amplification stage is configured to be supplied with a boosted voltage greater than the supply voltage from a high voltage line, receive as input the intermediate current, and generate a driving voltage that is changed based upon the intermediate current. A pass transistor is controlled with the driving voltage to keep constant on a second conduction terminal thereof a regulated output voltage. A feedback network generates the feedback voltage based on the regulated output voltage.

Abstract translation: 低压差稳压器包括：运算跨导放大器，被配置为提供调节器的电源电压，接收参考电压和反馈电压作为输入，并且基于参考电压和反馈之间的差产生中间电流 电压。 电流 - 电压放大级被配置为被提供大于来自高压线的电源电压的升压电压，作为输入接收中间电流，并且产生基于中间电流而改变的驱动电压。 通过驱动电压来控制传输晶体管，以在其第二导通端子上保持恒定的稳定的输出电压。 反馈网络基于稳压输出电压产生反馈电压。