Power Supply Bias Converter Failure Detection Logic
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Solution Overview
Problem
Power supply systems often fail to detect failures in bias converters during diagnostics, leading to faulty supplies being returned to users, as existing detection methods are inadequate.
Innovation Solution
A controller with logic circuitry connected to signal lines monitors internal voltages of the power supply, comparing them to reference thresholds to detect deviations and log failure events, preventing faulty supplies from being reused.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing detection methods are used during diagnostics, then the diagnostic process is simple and quick, but failure events in bias converters are not detected and faulty power supplies are returned to users
Solution Approach 1:
The bias converter circuit is designed to self-diagnose by monitoring its own output voltage through a feedback path. The sense line taps into the converter's output and feeds it back to the controller, enabling the system to automatically detect its own failure conditions without external intervention.
Solution Approach 2:
A feedback mechanism is implemented where the output voltage of the bias converter is continuously monitored and fed back to the controller. The controller compares this feedback voltage against expected thresholds to determine whether a failure event has occurred, enabling real-time detection of converter degradation or failure.
2Reliability
If comprehensive failure detection is implemented, then faulty power supplies are identified and not returned to customers, but the diagnostic complexity and time increase
Solution Approach 1:
The failure detection mechanism is built into the power supply circuitry itself, with sense lines and comparison logic pre-configured to detect bias converter failures. This preliminary setup allows for immediate detection during diagnostics without requiring complex external testing equipment or time-consuming manual inspection procedures.
Data Source
AI summary
Example implementations relate to determining a failure event of a power supply. In some examples, an apparatus may comprise logic circuitry coupled to a signal line, the logic circuitry to receive a monitor signal via the signal line, where the monitor signal corresponds to an internal voltage of a power supply that is consumed wholly by the power supply, compare the monitor signal to a reference signal, and determine, based on the comparison, whether a failure event has occurred in the power supply.