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Voltage Regulators and System-on-Chip

A voltage regulator and reference voltage technology, applied in control/regulating systems, regulating electrical variables, instruments, etc., can solve problems such as large leakage current, affecting battery life, and excessive current, and achieve the effect of reducing power consumption

Active Publication Date: 2020-07-31
上海芯联芯智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to use a voltage converter (linear regulator) in the process of high-end technology, but the traditional DC static voltage conversion currently used has a large leakage current, for example, the leakage current may reach 2-3uA, which causes the main chip of the system Excessive current during sleep affects battery life

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Embodiment Construction

[0018] The detailed description of the present invention directly or indirectly simulates the operation of the technical solution of the present invention mainly through programs, steps, logic blocks, processes or other symbolic descriptions. In the ensuing description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. Rather, the invention may be practiced without these specific details. These descriptions and representations herein are used by those skilled in the art to effectively convey the substance of their work to others skilled in the art. In other words, for the purpose of avoiding obscuring the present invention, well-known methods and procedures have not been described in detail since they have been readily understood.

[0019] Reference herein to "one embodiment" or "an embodiment" refers to a particular feature, structure or characteristic that can be included in at least one implementation of the pres...

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Abstract

The invention discloses a voltage regulator and a system on chip. The voltage regulator comprises a first switch, a second switch and a third switch, a band-gap reference voltage generating circuit, apower field effect transistor, a voltage division circuit; a differential amplification circuit, a first capacitor, and a second capacitor, wherein the first switch, the second switch and the third switch are sequentially switched on and switched on for a first preset time, and then are sequentially switched off and switched off for a second preset time. Compared with the prior art, the voltage regulator with ultra-low leakage current is adopted to generate the working power supply voltage of a real-time clock control circuit, so that the power consumption is reduced.

Description

【Technical field】 [0001] The invention relates to the field of power supply design, in particular to a voltage regulator and an on-chip system using the differential voltage regulator. 【Background technique】 [0002] A general system-on-chip (SOC) will have a real-time clock control circuit (RTC). This circuit is a separate power supply module, and most of the power supply is directly powered by the battery. The main function of the real-time clock control circuit is to continue to maintain the clock function in the sleep state and to wake up the entire system-on-chip chip when needed, so as to meet the requirement of saving power consumption. [0003] Due to the progress of semiconductor technology, when realizing the design of the chip system chip, the voltage that the basic unit device can withstand is getting lower and lower, and the power supply voltage of the lithium battery is basically kept between 2.8 and 4.2V, far exceeding the current A power supply voltage of 1....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/46
CPCG05F1/46
Inventor 李耿民石克强何薇玲楼晓东肖正华
Owner 上海芯联芯智能科技有限公司