In the pursuit of battery-free IoT, new techniques are continuously emerging to extract ambient energy from the environment which we call energy harvesting. One powerful example is the use of magnetic core technology to harvest energy through inductive coupling. In a recent collaboration between e-peas and TCT, a fully functional energy harvesting setup was demonstrated—highlighting the real-world application of energy harvesting PMICs in industrial environments.
Magnetic Core as an Energy Harvester: How It Works
The demonstration features a compact TCT current generator that captures energy from an AC electrical cable via inductive coupling. This non-invasive method enables safe and efficient energy collection without interfering with the electrical circuit.
At the core of the system is the e-peas AEM30940, a highly efficient energy harvesting PMIC designed to convert the harvested AC energy into stable DC power. Paired with a rectifier circuit, the AEM30940 supplies energy to multiple low-power components, including:
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Humidity sensors
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Temperature sensor
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Light sensors
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A wireless transceiver
This solution demonstrates a scalable, real-world application for powering distributed sensors in smart buildings, industrial automation, and grid monitoring – without the need for batteries or wired power.
Why Energy Harvesting PMICs Matter
Energy harvesting PMICs (Power Management Integrated Circuits) are critical in bridging the gap between raw ambient energy and reliable, usable power for electronics. e-peas’ portfolio of PMICs supports energy sources including:
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Magnetic and inductive harvesting
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RF energy harvesting
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Solar energy harvesting
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Thermal and vibration energy sources
The AEM30940 is optimized for intermittent and unpredictable energy inputs, offering ultra-low startup voltage, efficient storage management, and dual output voltages—making it ideal for wireless sensor networks and remote IoT applications.
Watch the On-Demand Demo above
Want to see this innovative solution in action? Watch the full video demonstration to explore how magnetic core-based energy harvesting works and how the e-peas AEM30940 brings it to life. This collaboration with TCT shows how the right combination of energy harvesting PMICs and smart design can eliminate the need for battery replacements and enable long-term autonomy for smart devices.
Start Building Battery-Free Devices
Whether you’re working on smart infrastructure, industrial IoT, or wireless sensing, e-peas’ energy harvesting ICs and ambient energy managers give you the flexibility to power your devices from the environment—efficiently and sustainably.
Explore e-peas.com to learn more.
