Buck-Boost Converter Control Using Power Supply ID Verification
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Solution Overview
Problem
Redundant power supply systems face challenges when incorporating power supplies from unknown or untrusted manufacturers, as these may provide inadequate power output, leading to potential device damage or interruption during operation, especially when hot-plugged into the system.
Innovation Solution
A redundant power supply system (RPSS) with a power distribution device (PDD) and controller that receives power supply identification signals to enable or disable buck boost converters based on the manufacturer and power output capability, ensuring only trusted and adequate power supplies operate, thereby preventing damage to electronic devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If power supplies from unknown or untrusted manufacturers are allowed to operate in the redundant power supply system, then the system's adaptability and ease of operation are improved, but the reliability and safety of the electronic device are compromised due to inadequate power output
Solution Approach 1:
The system performs preliminary identification of power supplies using PS ID signals before allowing them to operate. The controller checks the PS ID during system initialization and before enabling buck-boost converters, preventing untrusted power supplies from causing harm while still allowing trusted manufacturers' products to function. This preliminary verification resolves the contradiction by ensuring reliability through pre-checks while maintaining adaptability to various manufacturers.
2Ease of operation
If power supplies are hot-plugged into the system during active operation, then the ease of operation and adaptability are improved, but the risk of device damage increases due to potential inadequate power output from untrusted manufacturers
Solution Approach 1:
The system implements feedback control by continuously monitoring PS ID signals from power supplies during hot-plugging operations. When a power supply is hot-plugged, the controller receives its PS ID, verifies it against trusted manufacturer identifiers, and only enables the corresponding buck-boost converter if the PS ID is valid. This feedback mechanism allows easy hot-plugging while preventing device damage through automatic verification and control.
3Reliability
If the system disables buck-boost converters for power supplies from untrusted manufacturers, then the reliability is improved, but the device complexity increases due to the need for PS ID reception and controller logic
Solution Approach 1:
The controller performs multiple functions: it manages buck-boost converter operation, receives and processes PS ID signals from various power supply manufacturers, makes trust verification decisions, and controls system power distribution. By consolidating these diverse functions into a single multi-functional controller, the system achieves reliable trust verification without proportionally increasing overall device complexity, as the controller integrates these responsibilities efficiently.
Data Source
AI summary
An example redundant power supply system comprises a power supply input to receive power from a power supply; a buck-boost converter coupled to the power supply input; and a controller coupled to the buck-boost converter. The controller is to receive a power supply identification signal from the power supply. The controller is also to enable or disable the buck-boost converter based on the power supply identification signal.