Harvest energy from piezo elements and store it in super capacitor
Designed by ceech in Slovenia
This product is no longer available for sale.
The seller may be offering an improved version or it may be hanging out on the beach, enjoying the retired life.
Sadly, we found out that this seller passed away in February 2020. Our condolences to his family and friends.
APPLICATIONS Piezoelectric Energy Harvesting Electro-Mechanical Energy Harvesting Low Power Battery Charging Wireless HVAC Sensors Mobile Asset Tracking Tire Pressure Sensors Battery Replacement for…
Read More…APPLICATIONS
Operation
The board is an ultralow quiescent current power supply designed specifically for energy harvesting and/or low current step-down applications. It is designed to interface directly to a piezoelectric or alternative A/C power source, rectify a voltage waveform and store harvested energy on an external capacitor, bleed off any excess power via an internal shunt regulator, and maintain a regulated output voltage by means of a nanopower high efficiency synchronous buck regulator. A storage capacitor provides power when the input voltage source is unavailable.
Inputs
A/C unrectified source from piezo can be connected at PZ1 and PZ2 inputs. Alternative, DC voltage (14V-20V) source connects to Vin and GND input pins.
The board has selectable power outputs. Output voltage level is selected on the two solder jumpers where the following combination is used:
1+3 Vout = 3.45V
2+3 Vout = 4.1V
1+4 Vout = 4.5V
2+4 Vout = 5V
In the above example 4.5V is selected.
Power Good Comparator
A power good comparator produces a logic high referenced to VOUT on the PGOOD pin the first time the converter reaches the sleep threshold of the programmed VOUT, signaling that the output is in regulation. The PGOOD pin will remain high until VOUT falls to 92% of the desired regulated voltage.
Features
/i/26221/products/2017-09-09T09%3A03%3A18.320Z-s-l1600%20%284%29.jpg?1606306133)
