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

Power on/reset circuit and method for controlling start/reset state of digital circuit

A technology for resetting the circuit and turning on the power supply, which is applied to electronic switches, electrical components, output power conversion devices, etc., and can solve problems such as the inability to restart digital circuits smoothly

Active Publication Date: 2012-07-11
RICHWAVE TECH CORP
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a power-on circuit and a related method for controlling the on / reset state of a digital circuit, so that the potential of the on / reset signal can indeed turn on the digital circuit at the back end, and solve the problems in the known technology. The problem with turning digital circuits back on

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
  • Power on/reset circuit and method for controlling start/reset state of digital circuit
  • Power on/reset circuit and method for controlling start/reset state of digital circuit
  • Power on/reset circuit and method for controlling start/reset state of digital circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0060] see Figure 4 , which is a schematic diagram of the power on / reset circuit 300 disclosed in the present invention. Such as Figure 4 As shown, the power on / reset circuit 300 includes a voltage tracking module 310 , an inverting amplification module 320 , a current supplier 330 , and an inverting logic module 340 . Please also see Figure 8 , which is disclosed according to the embodiment of the present invention Figure 4 A detailed schematic diagram of the reverse amplification module 320 is shown. Such as Figure 8 As shown, the reverse amplification module 320 includes an inverter CM and a transistor group TN.

[0061] The voltage following module 310 includes P-type metal-oxide-semiconductor transistors Q12, Q13, Q14, Q17, Q18, N-type metal-oxide-semiconductor transistors Q11, Q15, Q16, and capacitor C1, and is coupled to a DC voltage source VDD1 to form Figure 4The equivalent current source I1 shown. The source of the PMOS transistor Q12 is coupled to the D...

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

The invention discloses a power on / reset circuit and a method for controlling the start / reset state of a digital circuit. The power on / reset circuit comprises a voltage follow-up module, a reverse amplifying module, and at least one first transistor connected in series in a cascode manner, wherein the voltage follow-up module generates a first analog signal, and the potential level of the first analog signal changes with that of a first DC voltage source; the reverse amplifying module is used for reversing the potential logic of the first analog signal, generating a second analog signal; and the first transistor is used for adjusting the second analog signal, so as to enable the potential of a start / reset signal controlled by the second analog signal to be enough for rightly operating the digital circuit at the rear end.

Description

technical field [0001] The present invention discloses a power on / reset circuit and a related method for controlling the on / reset state of a digital circuit, especially a power on / reset comprising at least one transistor connected in series in a stack manner. Circuits and associated methods of controlling the on / reset state of digital circuits. Background technique [0002] In order to integrate more functions, general integrated circuits are mostly in the form of System-on-a-chip (SOC) and mixed-mode (mixed-mode), basically including digital circuits and analog circuits, and In addition to providing functions such as control, logic operations, and data storage, the digital circuit part also needs to include the setting of the initial condition of the integrated circuit, and the setting of the initial value of the initial condition requires a so-called open / reset signal ( Power on / Reset Signal). [0003] see figure 1 and figure 2 , which is a schematic diagram of two in...

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): H02M1/36H03K17/22
Inventor 李维杰
Owner RICHWAVE TECH CORP