Shared Three-Phase Fan Driver Circuit for Independent Multi-Fan Control
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Solution Overview
Problem
The existing fan driving systems require multiple controllers and protection and input interface circuits for each fan, leading to increased cost and volume when multiple fans are used in electronic products.
Innovation Solution
A plural-fans driving apparatus that includes a controller, a first three-phase motor driver structure, a second three-phase motor driver structure, and a protection and input interface circuit, which allows for simultaneous control of multiple fans using a common interface, reducing the need for multiple controllers and interface circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple controllers and protection and input interface circuits are used for each fan, then each fan can be controlled independently, but the cost and volume of the system increase significantly
Solution Approach 1:
The patent merges multiple fan control functions into a single controller. The controller includes a plurality of output terminals that can respectively drive first fan to nth fan, allowing one controller to replace multiple controllers. The protection and input interface circuit is also shared among all fans, further reducing component count and system complexity while maintaining independent control capability through the output terminals.
Solution Approach 2:
The controller is designed with multi-functionality to serve multiple fans. The output terminals can be selectively activated to control different fans, and the protection and input interface circuit provides universal protection and input handling for all fans. This universal design allows the same hardware components to perform multiple fan control functions without requiring dedicated components for each fan.
2Ease of operation
If multiple controllers and protection and input interface circuits are used for each fan, then each fan can be controlled independently, but the cost of the system increases
Solution Approach 1:
The patent merges multiple fan control functions into a single controller. The controller includes a plurality of output terminals that can respectively drive first fan to nth fan, allowing one controller to replace multiple controllers. The protection and input interface circuit is also shared among all fans, further reducing component count and system complexity while maintaining independent control capability through the output terminals.
Solution Approach 2:
The controller is designed with multi-functionality to serve multiple fans. The output terminals can be selectively activated to control different fans, and the protection and input interface circuit provides universal protection and input handling for all fans. This universal design allows the same hardware components to perform multiple fan control functions without requiring dedicated components for each fan.
Data Source
AI summary
A plural-fans driving apparatus is provided to drive a first fan and a second fan, and the first fan and the second fan are three-phase fans. The plural-fans driving apparatus includes a controller, a first three-phase motor driver structure, a second three-phase motor driver structure, and a protection and input interface circuit. The protection and input interface circuit is coupled to the first three-phase motor driver structure and the second three-phase motor driver structure, and protects the first three-phase motor driver structure and the second three-phase motor driver structure. The controller controls the first three-phase motor driver structure to drive the first fan, and controls the second three-phase motor driver structure to drive the second fan.