Unlock instant, AI-driven research and patent intelligence for your innovation.

On-off control method and on-off control circuit integrated in chip

A technology of switch control and switch control, which is applied in the electronic field and can solve problems such as the complexity of LDO switch control circuits

Pending Publication Date: 2019-10-22
兆讯恒达科技股份有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And it is necessary to use a specific off-chip power switching circuit for power supply to the switch control circuit of the LDO, so the realization of the existing LDO switch control circuit is very complicated

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • On-off control method and on-off control circuit integrated in chip
  • On-off control method and on-off control circuit integrated in chip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0029] The on-chip integrated switch control circuit provided by the embodiment of the present invention is integrated in the chip, especially can be used in the security chip, and realizes the output of the enabling signal of the linear voltage regulator (LDO) in the circuit system through the circuit. Control the switch of the LDO to realize the control of the load power components, that is, the switch machine.

[0030] In order to better understand the on / off control method of the present invention, the on-chip integrated on / off control circuit is first described. figure 1 A schematic diagram of an on-chip integrated on-off control circuit provided by an embodiment of the present invention.

[0031] As shown in the figure, the switch machine control circuit includes: switch signal input terminal 1 , delayer 2 , fli...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An embodiment of the invention relates to an on-off control method and an on-off control circuit integrated in a chip. A delayer in the chip receives an on-off control signal, and triggers start of delay timing according to the signal pulse of the on-off control signal; when the delay timing reaches a set time, a first pulse signal is output; a toggle flip-flop in the chip is triggered to reversethe level of the current output signal according to the signal rising edge or falling edge of the first pulse signal; and the reversed level is output by an enable signal output terminal to form an enable signal for on-off control.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a switch control method and an on-chip integrated switch control circuit. Background technique [0002] Power supply is an indispensable part of various electronic equipment, and its performance is directly related to the technical indicators of electronic equipment and whether it can work safely and reliably. At present, the commonly used DC regulated power supply is divided into two categories: linear power supply and switching power supply. [0003] An LDO is a linear regulator that uses a transistor or FET operating in its linear region to subtract excess voltage from the applied input voltage to produce a regulated output voltage. If the input voltage is very close to the output voltage, the LDO voltage regulator can be used to achieve high efficiency. [0004] The structure of the LDO low-dropout linear regulator mainly includes a startup circuit, a constant current s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/625
CPCG05F1/625
Inventor 李立杨磊于飞洋
Owner 兆讯恒达科技股份有限公司