Regenerative Building Block Rectifier Low Voltage Drop
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Solution Overview
Problem
Conventional diode bridges experience high energy losses during signal rectification, especially at low voltages, limiting their efficiency and requiring complex circuitry for synchronous rectification, which complicates the operation and increases costs.
Innovation Solution
The development of a regenerative self-controlling semiconductor device with a regenerative building block (RBB) structure, featuring four electrodes - source, drain, gate, and probe, allowing automatic switching between ON and OFF states without the need for additional control circuitry, enabling efficient rectification with reduced voltage drop.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional diode bridges are used for rectification, then the circuit structure is simple, but energy losses are high especially at low voltages
Solution Approach 1:
The regenerative building block uses the voltage at its own drain terminal to control the gate, enabling automatic switching between ON and OFF states without external control circuitry. This self-service mechanism eliminates the need for complex synchronous rectification controllers while achieving low voltage drops through regenerative action that reinforces the switching state.
Solution Approach 2:
The probe electrode detects the voltage at the drain terminal and feeds this information back to the gate control mechanism. This feedback loop enables the device to automatically sense when switching is needed and reinforces the switching action, creating a regenerative effect that reduces voltage drop and improves efficiency without requiring external sensors or controllers.
2Loss of energy
If synchronous rectification with MOSFET is used, then rectification efficiency is improved, but circuit complexity increases significantly
Solution Approach 1:
The regenerative building block eliminates the need for external controllers, sensors, and gate drivers required by conventional synchronous rectification. The device uses its own operating voltage to control its state through the feedback mechanism, reducing the complex circuitry to just the regenerative building blocks themselves while maintaining low voltage drops comparable to synchronous rectification.
Solution Approach 2:
The invention extracts and eliminates the complex control circuitry (sensors, controllers, gate drivers) from the synchronous rectification system, retaining only the essential switching function implemented through the regenerative building block's inherent feedback mechanism. This removes the burden of additional signal processing while maintaining efficiency.
3Loss of energy
If synchronous rectification is implemented, then rectification efficiency improves, but operation speed decreases due to signal processing
Solution Approach 1:
The direct voltage feedback from drain to gate through the probe electrode enables instantaneous response to voltage changes. This direct feedback path eliminates the signal processing delays inherent in conventional synchronous rectification, allowing the device to switch states rapidly in response to voltage polarity changes without reducing rectification efficiency.
4Device complexity
If conventional diodes are used, then circuit implementation is simple, but forward voltage drop is large limiting low voltage operation
Solution Approach 1:
The regenerative building block uses the voltage at its drain terminal to automatically control its own gate state. When the drain voltage exceeds the threshold, the feedback mechanism automatically switches the device to the ON state, maintaining a low voltage drop. This eliminates the need for complex control circuits while achieving superior voltage drop characteristics compared to conventional diodes.
Solution Approach 2:
The invention changes the operating parameters of the MOSFET by using regenerative feedback to maintain optimal gate voltage. This enables the device to operate in a regime where the voltage drop is minimized, allowing efficient low voltage operation that conventional diodes cannot achieve due to their fixed forward voltage characteristics.
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
The regenerative half-bridge rectifiers achieve lower forward voltage drops and reduced leakage currents, enabling efficient operation at low voltages with simplified circuitry, comparable to synchronous rectifiers but without the complexity, thus improving frequency operation and reducing energy losses.
Implementation Method 1
The probe electrode is adapted to detect a voltage at the drain terminal and feed back to the gate
Implementation Method 2
allowing automatic switching between ON and OFF states without the need for additional control circuitry, enabling efficient rectification with reduced voltage drop
Data Source
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AI summary
A rectifier building block has four electrodes: source, drain, gate and probe. The main current flows between the source and drain electrodes. The gate voltage controls the conductivity of a narrow channel under a MOS gate and can switch the RBB between OFF and ON states. Used in pairs, the RBB can be configured as a three terminal half-bridge rectifier which exhibits better than ideal diode performance, similar to synchronous rectifiers but without the need for control circuits. N-type and P-type pairs can be configured as a full bridge rectifier. Other combinations are possible to create a variety of devices.