公开(公告)号：US08836377B1

公开(公告)日：2014-09-16

申请号：US13869634

申请日：2013-04-24

Applicant: Texas Instruments Incorporated

Inventor： Vadim Valerievich Ivanov ,  Ravi Balasingam ,  Ritu Shree

IPC: H03K5/153

CPC classification number: H03K3/01 ,  G01R19/16542 ,  G01R19/16576 ,  G06F1/1626 ,  G06F1/28 ,  H02H3/207

Abstract: A power supervisor circuit is provided. The circuit includes a first sample circuit that periodically samples a first reference voltage derived from a high output rail of a voltage source and generates a first sampled output voltage. The circuit includes second sample circuit that periodically samples a second reference voltage associated with a low output rail of the voltage source and generates a second sampled output voltage. A voltage supervisor in the circuit generates a trip point signal when a combination of the first and second sampled output voltage crosses a predetermined threshold indicating that the voltage source output voltage has fallen below a desired output voltage.

Abstract translation: 提供电源管理电路。 电路包括第一采样电路，其周期性地对从电压源的高输出轨导出的第一参考电压进行采样，并产生第一采样输出电压。 电路包括第二采样电路，周期性地对与电压源的低输出轨相关联的第二参考电压进行采样，并产生第二采样输出电压。 当第一和第二采样输出电压的组合跨过预定阈值，指示电压源输出电压已经低于期望输出电压时，电路中的电压监控器产生跳变点信号。