An output drive circuit that can realize output high level conversion
An output drive circuit, high-level technology, applied in the direction of output power conversion devices, electrical components, etc., can solve the problems of output drive signal pull-up, reduce power consumption, improve flexibility, and isolate noise interference Effect
Active Publication Date: 2017-02-22
BEIJING MXTRONICS CORP +1
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The feedback circuit is used to solve the problem of insufficient output drive signal pull-up when the output terminal is connected to a large load
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
[0037] The present invention will be explained below in conjunction with the accompanying drawings and specific embodiments.
[0038] Such as image 3 As shown, the present invention proposes an output drive circuit that can realize output high-level conversion, including a first power supply VDD1, a second power supply VDD2, an output control circuit T, a pull-up P tube pre-driver circuit, and a pull-up output drive PMOS Tube MP2, pull-down output drive tube MN5, output isolation circuit, pull-down N tube pre-drive circuit, variable drive signal MID generating circuit, pull-down pre-drive circuit.
[0039] Such as image 3 As shown, the output control circuit T is a three-state control circuit, including a data signal input terminal A, an enable signal input terminal S, a first output terminal Z1, and a second output terminal Z2;
[0040] Such as image 3 As shown, the pull-up P transistor pre-driver circuit includes a first output buffer BUF1, a level shift buffer circuit...
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 an output driving circuit capable of realizing output high level conversion. The output driving circuit is characterized by comprising a first power supply VDD1, a second power supply VDD2, an output control circuit T, an upwards pulling P tube pre-driving circuit, an upwards pulling output driving PMOS (P-channel metal oxide semiconductor) tube MP2, a downwards pulling output driving tube MN5, an output isolation circuit, a downwards pulling N tube pre-driving circuit, a variable driving signal MID and a downwards pulling pre-driving circuit. The upwards pulling pre-driving circuit provides the variable driving signal MID for the driving tube MP2 through the pulling of a level displacement buffer circuit SHIFT by using the feedback circuit for acceleration, so that the whole circuit realizes the output high level voltage conversion under the high-voltage-device-free condition. Compared with other circuits, the technology has the characteristics that an additional high-voltage device output tube is not needed, different selections of low level input and high level output can be realized, the load is fast driven, the power supply noise can be isolated, the area is smaller, and the power consumption is lower.
Description
technical field [0001] The invention relates to an output drive circuit capable of converting low-level voltage to high-level voltage without using high-voltage devices, and more specifically relates to the field of level converter and integrated circuit I / O design. Background technique [0002] With the diversification of the development of integrated circuits, integrated circuits operating at various levels of voltage have been derived. Proper signal levels ensure reliable system operation and prevent damage to sensitive circuits due to excessively high or low voltage conditions. Inputs below the desired level will reduce the signal noise margin, while inputs that are too large will cause excessive energy loss. In order to effectively transmit signals, integrated circuits usually use input / output (I / O) interfaces as a bridge between low voltage and high voltage, so that low voltage signals can be completely transmitted without interference from high voltage signals. [0...
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 Patents(China)
IPC IPC(8): H02M1/088H02M1/44
CPCH02M1/088H02M1/44
Inventor 李雪赵元富文治平王宗民周亮冯文晓张硕
Owner BEIJING MXTRONICS CORP