Bidirectional signal conversion circuit

By introducing switches, pull-up resistors, and output response enhancement circuits into the bidirectional signal conversion circuit, and utilizing AC coupling and output stage circuitry to accelerate voltage changes, the problems of slow signal transmission speed and gate delay in traditional bidirectional voltage converters are solved, achieving fast signal conversion and low-cost design.

CN116742966BActive Publication Date: 2026-06-09REALTEK SEMICON CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
REALTEK SEMICON CORP
Filing Date
2022-03-01
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing bidirectional voltage converters have shortcomings in signal transmission speed, especially in terms of insufficient pull-up capability and limited pull-down capability, resulting in slow signal transmission speed. At the same time, there is a gate delay problem when transmitting high-frequency signals.

Method used

By employing switches, first and second pull-up resistors, and first and second output response enhancement circuits, and through the combination of first and second AC coupling circuits and output stage circuits, the control signal is used to accelerate port voltage changes, thereby achieving fast signal conversion.

Benefits of technology

It improves signal transmission speed, avoids high-cost circuit design, enhances transient response capability of signal conversion, and solves the problems of slow signal transmission speed and gate delay in traditional circuits.

✦ Generated by Eureka AI based on patent content.

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Abstract

A bidirectional signal conversion circuit is used to perform signal conversion between a first port and a second port, and includes a switch, a first pull-up resistor, a second pull-up resistor, a first output response enhancement circuit and a second output response enhancement circuit. The switch is coupled between the first port and the second port, and operates according to a bias voltage. The first pull-up resistor is coupled between the first port and a high voltage terminal. The second pull-up resistor is coupled between the second port and a low voltage terminal. The first output response enhancement circuit includes a first AC coupling circuit and a first output stage circuit, and is capable of accelerating the transient response of an output port when the first port and the second port are respectively used as an input port and an output port. The second output response enhancement circuit includes a second AC coupling circuit and a second output stage circuit, and is capable of accelerating the transient response of the output port when the second port and the first port are respectively used as the input port and the output port.
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