Flip pulse width control circuit and control method of piezoelectric energy harvesting interface circuit
By designing a flip pulse width control circuit, detecting the zero-crossing signal of the current source and determining the flip direction signal, generating a switch pulse width signal of a specific time, and preventing false triggers through multiple delay units and D flip-flops, the problems of energy loss and error signals during inductance flip are solved, and efficient rectification and normal operation of the piezoelectric energy collection interface circuit is realized.
Patent Information
- Application Number
- CN202210091672.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-01-26
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2042-01-26
AI Technical Summary
In the piezoelectric energy harvesting interface circuit, energy loss is caused by the presence of resistors during inductance flip, and rapid voltage conversion may generate incorrect output logic signals, affecting the normal control of the circuit.
A flip pulse width control circuit is designed, including a detection circuit module, a pulse width control module and a switch signal module. By detecting the zero-crossing signal of the current source and determining the flip direction signal, a switch pulse width signal of a specific time is generated, and logic processing is performed to generate correct switch control logic, and false triggers are prevented through multiple delay units and D flip-flops.
It effectively reduces the signal error triggering during the flip process, ensures that the circuit outputs the correct logical timing, and realizes the normal operation and efficient rectification of the piezoelectric energy collection interface circuit.