Slave Bus Controller Power Conversion Circuitry
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Solution Overview
Problem
Current power systems for slave bus controllers in digital bus interfaces face challenges in maintaining a stable supply voltage, as they derive power from the input data signal, leading to voltage droop and inability to sustain appropriate charge, especially in spatially constrained devices like modern cellular telephones.
Innovation Solution
A bus interface system with a master bus controller generating an input data signal that is converted into a supply voltage and charge current by the slave bus controller's power conversion circuitry, using power conversion and switch regulation to regulate the supply voltage and maintain charge, eliminating the need for additional bus lines for power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If slave bus controller derives power from input data signal, then separate power bus line is eliminated, but supply voltage droops and charge cannot be maintained
Solution Approach 1:
The power derivation function is segmented into separate circuit blocks: rectifier circuit for converting input signal to voltage, regulator circuit for maintaining stable voltage, and storage element for charge accumulation. This segmentation allows each block to be optimized independently while working together to resolve the voltage stability issue.
Solution Approach 2:
A storage element (capacitor) is introduced as an intermediary between the power conversion circuitry and the slave bus controller. This storage element accumulates charge during high voltage periods and releases it during voltage droop, mediating the power delivery to maintain stable operation of the controller.
2Area of stationary object
If power is derived from data signal to save space, then spatial efficiency improves, but voltage regulation becomes difficult
Solution Approach 1:
The input data signal serves multiple functions simultaneously: it carries information data for bus communication and serves as the power source for the slave bus controller. This multi-functionality eliminates the need for separate power delivery infrastructure, achieving spatial efficiency while the power conversion circuitry handles both power extraction and regulation.
Solution Approach 2:
The power conversion circuitry dynamically adjusts its operation based on the varying voltage parameters of the input data signal. The regulator circuit modifies its control parameters to maintain stable output voltage despite the fluctuating input from the data signal, enabling effective voltage regulation in a space-constrained configuration.
3Use of energy by moving object
If storage elements are isolated from bus line for power derivation, then power conversion efficiency improves, but charge maintenance capability deteriorates
Solution Approach 1:
The storage element maintains continuous charge accumulation and discharge cycles, ensuring uninterrupted power supply to the slave bus controller. The regulator circuit continuously monitors and adjusts charging/discharging operations, maintaining stable voltage levels and reliable charge maintenance while preserving power conversion efficiency through the isolated configuration.
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 ensures stable power supply to the slave bus controller, preventing voltage droop and maintaining appropriate charge, thus enhancing the efficiency and spatial efficiency of bus interface systems in devices like cellular telephones.
Implementation Method 1
a power converter configured to convert the input data signal from the master bus controller into a supply voltage
Implementation Method 2
The power conversion circuitry is also configured to generate a charge current from the input data signal
Data Source
AI summary
This disclosure relates generally to digital bus interfaces. In one embodiment, a bus interface system includes a master bus controller and a slave bus controller coupled along a bus line. The master bus controller is configured to generate an input data signal that is received by the slave bus controller along the bus line. The slave bus controller includes power conversion circuitry that includes a power converter configured to convert the input data signal from the master bus controller into a supply voltage. The power conversion circuitry is also configured to generate a charge current from the input data signal. In this manner, the charge current can be used to regulate the supply voltage and maintain the appropriate charge.