Power-on reset circuit and output stability improving method thereof
A technology of voltage stability and electrical reset, applied in the field of power-on reset circuit and its output stability improvement, can solve the problems of control chip, reset time has a great influence, cannot meet the application scenarios of the whole machine, etc., to ensure normal operation, High temperature stability and voltage stability, the effect of improving temperature stability and voltage stability
Pending Publication Date: 2022-04-01
CHONGQING SOUTHWEST INTEGRATED CIRCUIT DESIGN
View PDF0 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The traditional power-on reset circuit includes three parts: a charging circuit composed of MOS transistors, a charging and discharging capacitor, and a Schmitt trigger. To control the chip at any time, it cannot meet the application scenario of the whole machine that requires the power-on reset time point
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0036] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.
[0037] see Figure 1 to Figure 5 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arb...
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
Login to View More Abstract
The invention provides a power-on reset circuit and an output stability improving method thereof, the power-on reset circuit comprises a charging module, a charging and discharging capacitor, a Schmitt trigger and a delay shaping module, the charging module comprises a current generating unit and a shunting mirror image unit, the current generating unit generates and outputs a first current, and the shunting mirror image unit outputs a second current. The shunting mirror image unit receives the first current, shunts the first current to obtain a second current, outputs the second current in a mirror image manner, and outputs a reset signal after charging conversion and triggering shaping are performed on the charging and discharging capacitor by using the second current, and the second current is obtained by shunting on the basis of the first current; the second current is apportioned and weakened by the fluctuation influence of the temperature and the voltage, the temperature stability and the voltage stability of the second current are higher, the temperature stability and the voltage stability of a subsequent reset signal based on the second current are improved, and the influence of the temperature and the voltage on the reset time is small correspondingly. And the normal work of the circuit or other devices is effectively ensured.
Description
technical field [0001] The invention relates to the technical field of integrated circuits, in particular to a power-on reset circuit and a method for improving its output stability. Background technique [0002] The power-on reset (POR) circuit is widely used in analog, digital and radio frequency chips. Its function is to ensure that each part of the circuit is initialized to a known state after power is applied to ensure that the chip can work normally. The traditional power-on reset circuit includes three parts: a charging circuit composed of MOS transistors, a charging and discharging capacitor, and a Schmitt trigger. To control the chip at any time, it cannot meet the application scenarios of the whole machine that require the power-on reset time point. [0003] Therefore, it is very necessary to design a power-on reset circuit whose reset time is less affected by temperature and voltage. Contents of the invention [0004] In view of the shortcomings of the prior a...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H03K17/22
Inventor 吴炎辉徐振洋范麟刘永光李明剑李家祎
Owner CHONGQING SOUTHWEST INTEGRATED CIRCUIT DESIGN