Multi-Voltage Converter With Thermal Protection For RF Biasing
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Solution Overview
Problem
RF components like PIN diodes and GaN devices require multiple voltage supplies and high current capabilities, leading to heat generation and the need for additional power supplies, which complicates their integration and operation in communication and radar systems.
Innovation Solution
An integrated multi-voltage converter with thermal protection that uses a single low-voltage supply to generate multiple programmable voltage outputs up to 35 volts and -20 volts, along with high current capabilities, and incorporates a temperature sensor and control circuitry to prevent overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple voltage supplies are used to power RF components, then the voltage requirements of RF components are met, but the system complexity and number of power supplies increase
Solution Approach 1:
The voltage converter is designed to provide multiple different voltage outputs (positive and negative voltages) from a single power supply unit, enabling it to power various RF components with different voltage requirements simultaneously. This multi-functional capability eliminates the need for multiple separate power supplies while maintaining adaptability to different voltage needs.
Solution Approach 2:
Multiple voltage generation functions are merged into a single integrated voltage converter device. Instead of using separate power supplies for different voltage requirements, the invention combines all voltage generation capabilities into one unit that can output multiple voltages, thereby reducing system complexity and the number of components.
2Power
If high current capabilities are provided to RF components, then the power delivery is sufficient, but heat generation increases
Solution Approach 1:
The voltage converter incorporates temperature sensing circuitry that continuously monitors the temperature of the device. When the temperature exceeds a predetermined threshold, the circuitry automatically reduces the output current to prevent overheating. This feedback mechanism allows the system to maintain high power delivery capability under normal conditions while actively managing heat generation when temperature limits are approached.
Data Source
AI summary
A multi-voltage converter is described that includes integrated temperature-protection circuitry. The converter may be used to bias radio-frequency components such as PIN diodes and gallium-nitride devices, and may include integrated bias-sequencing circuitry. Programmable output voltages as high as 30 volts and as low as −20 volts may be generated.