STEVAL-ISV020V1 Evaluation board for SPV1050 ULP energy harvester and battery charger buck-boost configuration Data brief Description The STEVAL-ISV020V1 is an evaluation board based on the ultralow power energy harvester and battery charger SPV1050. For any detail related to the SPV1050 features and performances please refer to the datasheet. The evaluation board implements the buck-boost configuration of the DC-DC converter and has the purpose of enhancing the SPV1050 based applications development by testing the silicon performance thanks to many jumpers and test points, and by helping to find out the best system configuration to make the SPV1050 device working at the most of efficiency. The STEVAL-ISV020V1 board is optimized to: Harvest energy from PV panels supplying 2.6 V V 9 V and 10 A I 20 mA. MP MP Features Charge a battery with the 3.7 V undervoltage protection threshold (V ) and 4.2 V end of UVP First startup at Vin = 2.6 V charge voltage threshold (V ). EOC Input voltage working range: Nevertheless, few easy changes on the 150 mV Vin 18 V application components (input and output resistor End of charge battery voltage: V = 4.25 V EOC partitioning, C capacitor) allow to use a different IN Battery undervoltage protection: V = 3.7 V PV panel and source (like TEG), and battery, by UVP setting the V , the V and the V MPP SET UVP EOC thresholds according to the source and load. Applications More in detail, operating ranges can be extended as follows: V from 150 mV up to 18 V, I up to Charge any battery chemistry, including lithium MP MP 100 mA, V down to 2.2 V and V up to based, NiMH, solid state thin film and UVP EOC 5.3 V. supercapacitor. WSN, HVAC, building and home automation, industrial control, access control, smart lighting, asset and livestock positioning and tracking, surveillance. Body area network, sportswear, fitness. May 2014 DocID025592 Rev 2 1/9 For further information contact your local STMicroelectronics sales office. www.st.comSchematic and bill of material STEVAL-ISV020V1 1 Schematic and bill of material The schematic, bill of material and gerber files can be downloaded from the Design resources tab of the STEVAL-ISV020V1 product folder on www.st.com. 2/9 DocID025592 Rev 2