公开(公告)号：US08996943B2

公开(公告)日：2015-03-31

申请号：US13722594

申请日：2012-12-20

Applicant: STMicroelectronics Pvt. Ltd. ,  STMicroelectronics S.r.I.

Inventor： Nicolas Bernard Grossier ,  Sabyasachi Das ,  V Srinivasan

IPC: G06F11/00 ,  G05F1/56 ,  G01R31/00 ,  G01R31/319 ,  G05F1/10

CPC classification number: G05F1/56 ,  G01R31/00 ,  G01R31/31924 ,  G05F1/10

Abstract: A Voltage regulator includes a first input terminal configured to receive an input supply voltage, includes a second input terminal configured to receive a regulated output supply voltage as a function of the input supply voltage or to receive a test supply voltage and comprises a power transistor including an input terminal configured to receive the input supply voltage and including an output terminal configured to generate the regulated output supply voltage. The Voltage regulator is configured, during a start-up phase of a test operation mode, to receive a control signal equal to the input supply voltage, is configured to receive the input supply voltage having a substantially increasing trend, detect that the input supply voltage is equal to a first voltage threshold and generate, as a function of the detected signal and of the control signal, a by-pass signal having a transition from a first logic value to a second logic value for indicating a by-pass status of the Voltage regulator, and is configured to receive the by-pass signal having the second logic value and open the power transistor. The second input terminal is configured, during the test operation mode, to receive the test supply voltage having a test value different from a nominal value of the regulated output supply voltage.

Abstract translation: 电压调节器包括被配置为接收输入电源电压的第一输入端子，包括被配置为接收作为输入电源电压的函数的调节输出电源电压或者接收测试电源电压的第二输入端子，并且包括功率晶体管，包括 输入端子，被配置为接收所述输入电源电压并且包括被配置为产生所述稳定的输出电源电压的输出端子。 电压调节器在测试操作模式的启动阶段被配置为接收等于输入电源电压的控制信号，被配置为接收具有基本上增加的趋势的输入电源电压，检测输入电源电压 等于第一电压阈值，并且根据所检测的信号和控制信号产生具有从第一逻辑值到第二逻辑值的转变的旁路信号，用于指示所述第一电压阈值的旁路状态 电压调节器，并且被配置为接收具有第二逻辑值的旁路信号并且打开功率晶体管。 在测试操作模式期间，第二输入端被配置为接收具有与调节输出电源电压的标称值不同的测试值的测试电源电压。

公开(公告)号：US20130271107A1

公开(公告)日：2013-10-17

申请号：US13722594

申请日：2012-12-20

Applicant: STMicroelectronics S.r.l. ,  STMicroelectronics Pvt. Ltd.

Inventor： Nicolas Bernard Grossier ,  Sabyasachi Das ,  V Srinivasan

IPC: G05F1/56

CPC classification number: G05F1/56 ,  G01R31/00 ,  G01R31/31924 ,  G05F1/10

Abstract: A Voltage regulator includes a first input terminal configured to receive an input supply voltage, includes a second input terminal configured to receive a regulated output supply voltage as a function of the input supply voltage or to receive a test supply voltage and comprises a power transistor including an input terminal configured to receive the input supply voltage and including an output terminal configured to generate the regulated output supply voltage. The Voltage regulator is configured, during a start-up phase of a test operation mode, to receive a control signal equal to the input supply voltage, is configured to receive the input supply voltage having a substantially increasing trend, detect that the input supply voltage is equal to a first voltage threshold and generate, as a function of the detected signal and of the control signal, a by-pass signal having a transition from a first logic value to a second logic value for indicating a by-pass status of the Voltage regulator, and is configured to receive the by-pass signal having the second logic value and open the power transistor. The second input terminal is configured, during the test operation mode, to receive the test supply voltage having a test value different from a nominal value of the regulated output supply voltage.

Abstract translation: 电压调节器包括被配置为接收输入电源电压的第一输入端子，包括被配置为接收作为输入电源电压的函数的调节输出电源电压或者接收测试电源电压的第二输入端子，并且包括功率晶体管，包括 输入端子，被配置为接收所述输入电源电压并且包括被配置为产生所述稳定的输出电源电压的输出端子。 电压调节器在测试操作模式的启动阶段被配置为接收等于输入电源电压的控制信号，被配置为接收具有基本上增加的趋势的输入电源电压，检测输入电源电压 等于第一电压阈值，并且根据所检测的信号和控制信号产生具有从第一逻辑值到第二逻辑值的转变的旁路信号，用于指示所述第一电压阈值的旁路状态 电压调节器，并且被配置为接收具有第二逻辑值的旁路信号并且打开功率晶体管。 在测试操作模式期间，第二输入端被配置为接收具有与调节输出电源电压的标称值不同的测试值的测试电源电压。