Variable Slope Current Regulation for VRM Dynamic Testing
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Solution Overview
Problem
Current electronic loads can only simulate one slope of output current for voltage regulator modules (VRMs), failing to meet the variable slope requirements of different loads during dynamic response testing.
Innovation Solution
A power supply test device comprising a controller, function generator, loading circuit, current detection circuit, enabling circuit, keyboard interface, and display, which generates a square-wave signal to actively regulate the output current of a VRM, allowing for adjustable slope by modifying the waveform parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a present electronic load is used to drive the VRM, then the output current can be regulated to simulate a dynamic load, but the output current can only have one fixed slope and cannot meet the requirement of variable slopes
Solution Approach 1:
The patent applies the dynamics principle by making the slope of the output current adjustable rather than fixed. The electronic load is designed to dynamically change the slope parameter based on different testing requirements, allowing the same device to adapt to various VRM specifications. This is achieved through controllable current regulation circuits that can modify the rate of current change (slope) in response to control signals, thereby resolving the contradiction between maintaining a simple device structure and achieving variable slope capability.
Solution Approach 2:
The patent implements parameter changes by allowing the slope parameter of the output current to be modified. Different slope values can be set to match different VRM requirements, transforming the electronic load from a fixed-function device to a configurable one. This parameter adjustment capability enables the device to meet diverse testing needs without requiring multiple separate electronic loads, thus improving adaptability while controlling device complexity.
2Adaptability or versatility
If the electronic load regulates the output current to simulate dynamic load, then the dynamic response testing can be performed, but it cannot drive different VRMs with different slope requirements
Solution Approach 1:
The patent uses the dynamics principle to enable the electronic load to adapt its output current characteristics to match different VRM requirements. By making the slope adjustable, the device can dynamically configure itself for testing different types of VRMs, ensuring compatibility across various specifications while maintaining reliable and accurate test results through proper matching of load characteristics to device requirements.
Data Source
AI summary
A power supply test device includes a function generator, a loading circuit, a current detection circuit, and a controller. The function generator outputs a square-wave signal to the loading circuit. The loading circuit is electronically connected to a power supply, the loading circuit regulates an output current of the power supply according to the square-wave signal. The current detection circuit cooperates with the controller in detecting a slope of the output current. The controller compares the detected slope with a preset value, and regulates the square-wave signal according to the comparison to regulate the slope of the output current.