Single Controller Power Supply Apparatus
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Solution Overview
Problem
Existing power supply apparatuses with two controllers result in higher power consumption, increased costs, and communication delays due to the need for separate software updates and complex controller interactions.
Innovation Solution
A power supply apparatus with a single secondary side controller, digital isolator, and isolation sensing units that processes alternating current to direct current without a power factor correction circuit, reducing power consumption and costs while eliminating communication delays by isolatedly measuring and controlling voltages and currents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two controllers are used in the power supply apparatus, then control functionality is provided, but power consumption increases and cost increases
Solution Approach 1:
The patent merges the primary side controller and secondary side controller into a single integrated controller. This single controller performs both primary side control (controlling the switching frequency of the power factor correction circuit) and secondary side control (regulating the output voltage), thereby reducing the component count from two to one controller, which directly reduces power consumption and cost while maintaining full control functionality.
Solution Approach 2:
The single controller is designed with multi-functionality to replace both the primary side controller and secondary side controller. It includes multiple control units that can operate in different modes: a first control unit for primary side control and a second control unit for secondary side control, allowing one controller to perform the functions previously requiring two separate controllers.
2Reliability
If two controllers are used in the power supply apparatus, then control functionality is provided, but device complexity increases
Solution Approach 1:
The patent merges the primary side controller and secondary side controller into a single integrated controller. This single controller performs both primary side control (controlling the switching frequency of the power factor correction circuit) and secondary side control (regulating the output voltage), thereby reducing the component count from two to one controller, which directly reduces power consumption and cost while maintaining full control functionality.
Solution Approach 2:
The single controller is designed with multi-functionality to replace both the primary side controller and secondary side controller. It includes multiple control units that can operate in different modes: a first control unit for primary side control and a second control unit for secondary side control, allowing one controller to perform the functions previously requiring two separate controllers.
3Reliability
If two controllers are used in the power supply apparatus, then control functionality is provided, but communication delay occurs between controllers
Solution Approach 1:
The patent merges the primary side controller and secondary side controller into a single integrated controller. This single controller performs both primary side control (controlling the switching frequency of the power factor correction circuit) and secondary side control (regulating the output voltage), thereby reducing the component count from two to one controller, which directly reduces power consumption and cost while maintaining full control functionality.
Solution Approach 2:
The patent introduces a communication unit as an intermediary between the control unit and the external environment. This communication unit handles all external communications and data exchanges, allowing the internal control logic to operate without communication delays. The communication unit acts as a buffer and mediator, managing data transmission efficiently between different components and eliminating the communication delay problems that would exist between separate controllers.
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 achieves lower power consumption and costs by using a single controller for software updates and eliminates communication delays, enabling efficient processing of alternating current to direct current without a power factor correction circuit.
Implementation Method 1
a bridge rectifier, electrically connected to the first connection point, the second connection point, the third connection point, and the fifth connection point
Implementation Method 2
a digital isolator, electrically connected to the secondary side controller
Implementation Method 3
a first capacitor, electrically connected to the first connection point and the second connection point; a second capacitor, electrically connected to the third connection point and the fifth connection point
Implementation Method 4
an inductor, electrically connected to the third connection point and the current sensing unit
Data Source
AI summary
A power supply apparatus mainly includes a secondary side controller, a digital isolator, a plurality of isolation sensing units, and a driving unit. The secondary side controller is configured to isolatedly measure voltages and currents, and is configured to isolatedly control the driving unit. The power supply apparatus includes a controller only, i.e. the secondary side controller 114. Therefore, the power consumption is lower, and the cost is lower. Only one controller is required to update software. There is no communication delay problem between two controllers.