Wang Xiudeng, Qian Libo, Li Yongyuan, along with other researchers from the Key Laboratory of Analog Integrated Circuits at Xidian University, have achieved remarkable advancements in the realm of micro-energy harvesting chips. Leveraging the 180nm BCD process, the team successfully developed a self-powered piezoelectric energy harvesting chip tailored for transient vibrations. This innovative chip employs synchronous flipping and an optimal charge extraction interface technology, thereby achieving complete decoupling between the piezoelectric transducer and the output. As a result, the output power remains unaffected by load fluctuations.

Furthermore, the team incorporated a single-stage maximum power point tracking technology (MPPT) based on envelope proportional flipping. This approach enables MPPT regulation directly at the source side, eliminating losses associated with multi-stage conversion and ensuring rapid convergence.

Additionally, the chip integrates a self-powered electronic circuit breaker and an envelope extractor. These features enable the chip to achieve near-zero standby power consumption and initiate immediate energy harvesting upon the onset of vibration, eliminating the need for a cold start process.