Adapter Microwave Gate Control for Crosstalk-Free MOS Switching
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Solution Overview
Problem
Existing chargers face efficiency limitations due to dead time constraints in MOS transistor control and parasitic interference causing crosstalk in circuits, particularly at high frequencies, with conventional isolation methods like transformers, capacitors, and optocouplers having limited distance settings and efficiency issues.
Innovation Solution
The use of a microwave unit to transmit control signals, allowing for shorter dead times and increased efficiency without crosstalk, by converting control signals into microwave signals for transmission and back to control transistors, enabling longer distance isolation and preventing parasitic capacitance transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional isolation methods (transformers, capacitors, optocouplers) are used to isolate control signals, then circuit crosstalk is prevented, but transmission distance is limited and efficiency is reduced
Solution Approach 1:
The patent replaces conventional electrical isolation methods (transformers, capacitors, optocouplers) with a microwave-based control signal transmission system. The control unit generates control signals that are transmitted via microwave signals to the MOS transistor, eliminating the need for traditional isolation components and enabling longer transmission distances without crosstalk.
Solution Approach 2:
The patent changes the transmission medium from conventional electrical signals to microwave signals. This parameter change allows the control signals to be transmitted over longer distances while maintaining isolation and preventing crosstalk, as microwave signals have different propagation characteristics that reduce parasitic interference.
2Reliability
If dead time of control signal is increased to ensure proper MOS transistor switching, then transistor switching reliability is improved, but charging efficiency is reduced
Solution Approach 1:
The patent replaces conventional control signal transmission with microwave-based transmission, which has faster signal propagation and sharper edges. This allows for shorter dead time while maintaining reliable MOS transistor switching, as the microwave signals can more precisely control the switching transitions without the parasitic delays associated with traditional isolation methods.
3Productivity
If MOS transistor operates at high frequency to improve charging speed, then productivity is improved, but parasitic interference and crosstalk increase
Solution Approach 1:
The patent changes the control signal transmission to use microwave frequencies, which have different interaction characteristics with parasitic capacitances compared to conventional control signals. This parameter change allows the MOS transistor to operate at high frequencies for improved charging speed while the microwave transmission method inherently reduces parasitic interference and crosstalk in the circuit.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances charging efficiency and prevents circuit crosstalk even at high frequencies, allowing for longer distance transmission without medium dependency, thus improving overall adapter performance.
Implementation Method 1
The first transmitting terminal is connected to the control unit, the first receiving terminal is configured to convert the first control signal into a first microwave signal and transmit it to the first receiving terminal
Implementation Method 2
the first receiving terminal is configured to convert the first microwave signal into the first control signal to control the at least one first transistor to be turned on or off
Data Source
AI summary
An adapter and a control method are provided. The adapter includes a transformer, at least one first transistor, a control unit, and a first microwave unit. The at least one first transistor is connected to a primary side of the transformer, and is configured to perform a chopping modulation on a voltage input to the transformer. The control unit is configured to output a first control signal. The first microwave unit includes a first transmitting terminal and a first receiving terminal. The first transmitting terminal is configured to convert the first control signal into a first microwave signal and transmit it to the first receiving terminal of the first microwave unit. The first receiving terminal is configured to convert the first microwave signal into the first control signal to control the at least one first transistor to be turned on or off.