Boost Circuit Voltage Output for Diode Overcurrent Protection
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Solution Overview
Problem
In existing voltage output devices, the diode in the boost circuit is required to handle a huge current, leading to potential damage and increased production costs.
Innovation Solution
A voltage output device with a boost circuit that includes a switch unit and a second diode, where the switch unit controls the connection between the voltage source and the second diode, preventing the second diode from bearing a huge current by only allowing the connection when necessary, thus preventing damage and reducing production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the diode in the boost circuit is designed to handle huge current, then the device can operate during transistor switching transitions, but the diode will be damaged and production costs increase
Solution Approach 1:
A third transistor is introduced as an intermediary component between the diode and the main circuit. This intermediary transistor controls the current flow path, allowing the diode to operate under normal conditions while the third transistor handles the switching transitions and absorbs the harmful huge current that would otherwise damage the diode.
2Strength
If the diode is made more robust to handle huge current, then it can withstand switching transitions, but production costs increase
Solution Approach 1:
The current handling function is segmented between multiple components: the diode handles normal rectification current, while the third transistor handles the exceptional huge current during switching transitions. This segmentation allows the diode to be a standard, inexpensive component rather than requiring an expensive high-current-rated diode.
3Reliability
If the switch timings of transistors are controlled to prevent simultaneous conduction, then component damage is prevented, but a default time interval is required between state changes
Solution Approach 1:
The third transistor acts as a mediator that resolves the timing conflict between transistors T1 and T2. It provides a safe current path during the transition period, eliminating the need for a default time interval and allowing transistors to switch states immediately without worrying about simultaneous conduction damage.
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 solution effectively prevents the second diode from being damaged by a huge current, thereby reducing production costs and ensuring the device's reliability.
Implementation Method 1
the diode 202 will sink a huge current to reverse the PN-junction
Implementation Method 2
the inductor 106 keeps current from changing
Implementation Method 3
the diode 202 keep charging to the capacitor 204
Data Source
AI summary
The present invention discloses a voltage output device for an electronic system, for transforming an input voltage for generating an output voltage for a load, which includes a first node, a second node, a third node, a first transistor, a second transistor, a first driving unit, a second driving unit, a control unit, a first diode, an inductor, a first capacitor, and a boost circuit.