Digital Device Boot Strap Circuit Stimulator
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Solution Overview
Problem
Existing digital devices require external discrete components or function-specific analog circuits for boot-strap power supply, leading to increased complexity and additional components for powering up and initializing before controlling electrical power applications.
Innovation Solution
A digital device generates a fixed duty cycle signal using an internal oscillator after Power-On-Reset (POR) to stimulate voltage generation circuits, allowing for internal power-up and initialization, then switches to normal operation and control of power applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external discrete components or function-specific analog circuits are used for boot-strap power supply, then the digital device can be powered up and initialized, but the device complexity and component count increase
Solution Approach 1:
The patent combines the boot-strap power supply function with the main power management circuitry by integrating the oscillator and control logic into the digital device itself. The digital device generates a fixed duty cycle signal internally that automatically stimulates the power generation circuit, eliminating the need for separate external boot-strap components while maintaining reliable power-up initialization
Solution Approach 2:
The digital device performs self-initialization by using its internal oscillator to generate the fixed duty cycle signal after Power-On-Reset. This self-service mechanism allows the device to power up and initialize itself without requiring external analog circuits or discrete components, thereby reducing overall system complexity while ensuring reliable startup
2Reliability
If external boot-strap components are used, then stable power can be provided during initialization, but the ease of manufacture and system integration deteriorate
Solution Approach 1:
The patent merges the boot-strap functionality into the main integrated circuit by incorporating the oscillator and control logic within the digital device. This integration ensures stable power during initialization while simultaneously improving ease of manufacture by reducing the number of external components that need to be assembled and tested
Solution Approach 2:
The digital device is designed with multi-functionality, serving both as the main control unit and as its own boot-strap power supply. The internal oscillator generates the fixed duty cycle signal that stimulates power generation, allowing the device to perform multiple functions (control + self-initialization) and thereby simplifying manufacturing and system integration
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 solution simplifies the power-up process by eliminating the need for external boot-strap components, reducing complexity and component count, while ensuring stable power supply and efficient control of power applications.
Implementation Method 1
when the power transistor switches on and off a varying magnetic flux is created in the power inductor that causes alternating current voltages to be generated in the power coil and the auxiliary coil
Data Source
AI summary
A digital device generates a fixed duty cycle signal with an internal oscillator after a Power-On-Reset (POR). This fixed duty cycle signal is output on a signal pin that normally is used for a PWM control signal. The fixed duty cycle signal is used to stimulate the voltage generation circuits so as to power up the digital device for initialization thereof. Once the digital device has powered-up and initialized, the digital device switches over to normal operation for control of the power system.