Phase-Tracked Pulse Circuit for Staggered Power Supply Synchronization
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Solution Overview
Problem
The instability of power supply systems caused by large peak currents when multiple power supplies operate simultaneously, leading to interference and instability in the system and other devices.
Innovation Solution
A phase tracking pulse generation circuit that includes a constant current circuit, peak voltage circuit, pulse rising edge extraction circuit, switch circuit, and comparison circuit, which synchronize the operation of two power supplies by generating a phase tracking pulse to reduce peak power and interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two power supplies work simultaneously to improve reliability and power supply efficiency, then the power supply reliability and efficiency are improved, but the instantaneous peak power becomes large causing interference and instability
Solution Approach 1:
The patent applies periodic action by implementing phase-tracking pulse generation that periodically switches between two power supplies. The circuit generates tracking pulses that cause the power supplies to operate in alternating phases rather than simultaneously, thereby maintaining high reliability through redundancy while eliminating the harmful peak power interference that occurs when both supplies operate at once.
2Use of energy by moving object
If two power supplies work simultaneously to improve power supply efficiency, then the power supply efficiency is improved, but the large peak currents cause instability in the power system
Solution Approach 1:
The patent implements periodic action through phase-tracking pulse generation that alternates the operation of two power supplies. By switching between supplies in a periodic manner controlled by tracking pulses, the system maintains efficient power supply operation while avoiding the stability issues caused by simultaneous operation and large peak currents.
Solution Approach 2:
The patent applies preliminary action by using a phase-tracking circuit that generates switching pulses in advance to control the alternation between power supplies. The tracking circuit anticipates the need to switch supplies and prepares the switching signals beforehand, ensuring smooth transitions that maintain system stability while preserving power supply efficiency.
Data Source
Figure 1~3
AI summary
Disclosed are a phase-tracked pulse generation circuit and a power supply device. The present application uses a driving pulse rising edge of a power supply as a reference, and uses a constant current circuit to charge a charging and discharging circuit at a constant current. When the reference driving pulse rising edge comes, the charging and discharging circuit is discharged; the peak voltage on the charging and discharging circuit is taken out and then divided for comparison with the voltage on the charging and discharging circuit; when the voltage on the charging and discharging circuit is equal to a divided voltage value of the peak voltage, the output of a comparison circuit turns high, and the output of a comparator is the phase-tracked pulse; the rising edge of the phase-tracked pulse can be used for synchronizing another power supply. The present application is suitable for staggered-phase working of two power supplies.