Power Converter Controller Pin Programming for Multi-Parameter Setup
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Solution Overview
Problem
Conventional power supply controllers require multiple configuration inputs and external components for setting operating parameters, increasing costs and reducing system reliability due to the need for numerous I/O pads and components, while also limiting flexibility for circuit designers.
Innovation Solution
A method and controller configuration that uses a single programming pin and component to set multiple operating parameters through measurement and reference tables, reducing the number of configuration inputs and external components required, and allowing for more comprehensive configuration options.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple configuration inputs and external components are used to set operating parameters, then configuration precision and flexibility are improved, but device complexity and cost increase
Solution Approach 1:
The patent implements a universal configuration input pin that can set multiple operating parameters through a single component (resistor). The controller reads the resistance value at this single pin and uses it to determine multiple parameters including switching frequency, maximum duty cycle, and protection thresholds, thereby providing multi-functionality without requiring multiple separate configuration inputs and components
Solution Approach 2:
The patent combines multiple configuration functions into a single configuration input pin. Instead of having separate pins for switching frequency, duty cycle, and protection thresholds, the invention merges these functions so that a single external resistor connected to one pin determines all these parameters simultaneously, reducing the overall number of components required
2Manufacturing precision
If multiple external components are used for parameter configuration, then configuration precision is improved, but system reliability decreases
Solution Approach 1:
The patent reduces the number of external configuration components from multiple resistors to a single resistor. This consolidation minimizes the total component count while maintaining the ability to precisely configure multiple parameters through the resistance value, thereby improving system reliability by reducing potential failure points without sacrificing configuration precision
3Adaptability or versatility
If multiple I/O pads are used for configuration, then parameter setting flexibility is improved, but manufacturing cost increases
Solution Approach 1:
The patent makes a single I/O pad universal for configuration purposes. This pad can set multiple operating parameters including switching frequency, maximum duty cycle, and various protection thresholds. This multi-functionality reduces the number of I/O pads required from multiple to just one, thereby lowering manufacturing cost while preserving parameter setting flexibility
Solution Approach 2:
The patent merges multiple configuration I/O pads into a single pad. By combining the functions of what would traditionally require separate pins into one unified configuration input, the invention reduces the total number of I/O pads needed, which directly reduces manufacturing cost while maintaining the ability to flexibly configure multiple parameters
Data Source
AI summary
The present application is directed at pin programming od controllers for power converters and provides for the programming of a plurality of different controller parameters using a single programming resistor. The value of the programming resistor is used as a pointer to select a table storing a plurality of different settings for the controller.