APPLICATIONS & SOLUTIONS / ENERGY HARVESTING APPLICATIONS
Vibration
The Vibration Solution
When would a Vibration Energy Harvesting solution be right for you?
Let’s assume that you work with battery powered IoT wireless devices that takes advantage of vibrations from ambient environment to acquire necessary energy. Without energy harvesting, chances are you need to replace the batteries of those devices, because they run out of energy. This generates operational costs.
In fact, in some environments, there is enough of energy dissipated by surrounding machines that you could use to power your devices.
When properly selected (material and topology) and sized (area exposed to temperature gradients), a piezoelectric harvester combined with our state of the art energy harvesting PMICs will recharge the batteries of your IoT applications from hot or cold sources.
Using e-peas’ piezoelectric energy harvesting, you will avoid typical operating costs associated with battery replacement.
What exactly does e-peas offer?
Best performing solutions that make your devices’ batteries live forever. Our innovative ICs autonomously and efficiently recharge your batteries from any temperature gradients.
e-peas offers you 1 AEM [Ambient Energy Manager] reference:
- The AEM30940 allows you for harvesting energy from a vibration energy harvester
Why e-peas? How does e-peas differ from competitors?
This reference is based on e-peas unique AEM platform offering:
- top energy conversion efficiency
- the fastest supercapacitor charge
- the lowest cold-start power
- the smallest footprint and associated components BOM
In addition, you will get direct access to engineering support by our designers.
Product Matrix
The following product(s) is/are recommended for vibration applications:
| Part Number | Vin | Cold-start | Pin | Pout | MPPT | Package |
| AEM30940 | 50mV to 5V | 380mV | 3μW to 400mW | 20mA@1.8V | Yes | QFN28 5x5mm |
AEM30940 for vibration harvesting
E-peas’ vibration energy harvesting IC solution – AEM30940 – is an integrated energy management subsystem that extracts DC power from a piezo or micro turbine generator to simultaneously store energy in a rechargeable element and supply the system with two independent regulated voltages. This allows product designers and engineers to extend battery lifetime and ultimately get rid of the primary energy storage element in a large range of wireless applications like industrial monitoring, home automation, wearables.
Ultra-low-power start-up
- Cold start from 380 mV input voltage and 3 µW input power (typical)
- RF input power from -19dBm up to 10dBm (typical)
Ultra-low-power Boost regulator
- Open-circuit voltage sensing for MPPT every 0.33s
- Configurable MPPT with 2-pin programming
- Selectable Voc ratios of 50, 65 or 80 %
- Input voltage operation range from 50mV to 5V
- MPPT voltage operation range from 50mV to 5V
- Constant impedance Matching (ZMPPT)
Integrated 1.2/1.8 V LDO regulator
- Up to 20 mA load current
- Power gated dynamically by external control
- Selectable output voltage
Integrated 1.8 V-4.1 V LDO regulator
- Up to 80 mA load current with 300 mV drop-out
- Power gated dynamically by external control
- Selectable or adjustable output voltage
Flexible energy storage management
- Selectable overcharge and overdischarge protection
- For any type of rechargeable battery or (super)capacitor
- Fast supercapacitor charging
- Warns the load when battery is running low
- Warns when output voltage regulators are available
Smallest footprint, smallest BOM
- Only seven passive external components
Optional primary battery
- Automatically switches to the primary battery when secondary battery gets empty