STEVAL-ISV020V1

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  VMP  9 V and 10 A  IMP 20 mA. Features Charge a battery with the 3.7 V undervoltage protection threshold (VUVP) and 4.2 V end of charge voltage threshold (VEOC).  First startup at Vin = 2.6 V  Input voltage working range: 150 mV  Vin  18 V  End of charge battery voltage: VEOC = 4.25 V  Battery undervoltage protection: VUVP = 3.7 V Applications  Charge any battery chemistry, including lithium based, NiMH, solid state thin film and supercapacitor. Nevertheless, few easy changes on the application components (input and output resistor partitioning, CIN capacitor) allow to use a different PV panel and source (like TEG), and battery, by setting the VMPP_SET, the VUVP and the VEOC thresholds according to the source and load. More in detail, operating ranges can be extended as follows: VMP from 150 mV up to 18 V, IMP up to 100 mA, VUVP down to 2.2 V and VEOC up to 5.3 V.  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 For further information contact your local STMicroelectronics sales office. 1/9 www.st.com Schematic and bill of material 1 STEVAL-ISV020V1 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 73 73  /B+9 &1 &1  ,1B/9   /     39,1 STEVAL-ISV020V1 Figure 1. Schematic (;7B683   &  )  & '10  73  73 -   033 8 0336(7 5   - 73 *1'      5     & Q)  639                            %$77B2. %$77B&+*  6725( 9%$77 /'2B(1         2873876 &21) /'2 /'2  73      893 (2& %$77B2. %$77B&+* DocID025592 Rev 2  - 0336(7 0335() 6*1' /'2B(1 /'2 &    033  73  5  /'2 ,1B/9 73 6725( 9%$77 3*1' /B+9 ,1B+9  &1 *1' 39   & Q) 6725(  & Q)  5  73  893 5 6:     73 6725(       5  73  6:  /'2B(1 *1'   6725(    $09 3/9 Schematic and bill of material  &1 893 Sect. Item QuanReference tity Part / value 1 1 U1 SPV1050 2 1 CN1 2-way screw connector 3 1 C1 4.7 µF Tolerance % Voltage current Watt Technol. Manufacturer Package Manufacturer code info. VFQFPN 3x3x1 20L (code A0BR) 15% DC-DC input section DocID025592 Rev 2 15% 25 V 0805 25 V 0805 ST SPV1050 Plastic socket TE Connectivity 282834-2 Input connector for PV panel or TEG Murata 0 C2 (DNM) 4.7 µF 5 3 J1, J2, J3 Jumper 8 1 R1 10 M 1% 0805 YAGEO RC0805FR0710ML 9 1 R2 1 M 1% 0805 TE Connectivity CRG0805F1M0 10 1 R3 5.6 M 1% 0805 VISHAY CRCW08055M 60FKEA 11 1 L1 22 µH 20% Coilcraft LPS4018223ML_ 12 1 C8 10 nF 15% 16 V X7R Murata GCM21BR71C 475KA73L 4 Pitch 2.54 mm Input capacitance GCM21BR71C 475KA73L TH 0603 More information Schematic and bill of material 4/9 Table 1. Bill of material Enable/disable MPPT Murata DC-DC inductor Voltage sampling time constant capacitance STEVAL-ISV020V1 GRM188R71C1 03KA01D Resistor partitioning for MPP track/setting Sect. Item QuanReference tity Part / value Tolerance % Battery section 1 CN4 2-way screw connector 14 1 C9 47 µF 20% 15 1 R4 6.2 M 16 1 R5 17 1 18 19 Watt Technol. Manufacturer Package Manufacturer code info. TE Connectivity Connector for external supply of pin STORE 0805 TDK 5% 0805 RS RS-0805-6m25%-0.125W 499 k 1% 0805 VISHAY CRCW0805499 KFKEA R6 2.7 M 1% 0805 VISHAY CRCW08052M 70FKEA 1 CN2 8-way screw connector TE Connectivity 282836-8 Connector for battery and battery status signals 2 C6, C7 100 nF KEMET C0603C104K4 RAC Tank capacitor for LDOs 21 2 23 1 5-pin male SW1, SW2 Stripline CN3 4-way screw connector 10% 10 V 282834-2 More information X7R Pitch 2.54 mm 0603 C2012X5R1A4 76M125AC Resistor Partitioning for UVP, EOC, protection setting Close 2 - 3: LDO disabled Close 1 - 2: LDO enabled Floating: external control through CN3 TH TE Connectivity 282836-4 Connector for LDOs load connection 5/9 Schematic and bill of material LDOs section DocID025592 Rev 2 13 Voltage current STEVAL-ISV020V1 Table 1. Bill of material (continued) Sect. Item QuanReference tity Part / value Tolerance % Voltage current Watt Technol. Manufacturer Package Manufacturer code info. More information List of test points DocID025592 Rev 2 24 1 TP1 True hole PV+ pin sensing and soldering 25 1 TP2 True hole MPP pin sensing and soldering 26 1 TP3 True hole MPP-SET pin sensing and soldering 27 1 TP4 True hole STORE pin sensing and soldering 28 1 TP5 True hole ULP pin sensing and soldering 29 1 TP6 True hole EOC pin sensing and soldering 30 1 TP7 True hole GND pin sensing and soldering 31 1 TP8 True hole GND pin sensing and soldering 32 1 TP9 True hole IN_LV pin sense (for probe scope) 33 1 TP10 True hole GND pin sensing (for probe scope) 34 1 TP11 True hole L_HV pin sensing (for probe scope) Schematic and bill of material 6/9 Table 1. Bill of material (continued) STEVAL-ISV020V1 STEVAL-ISV020V1 2 Layout Layout Figure 2 to Figure 4 show the components placement and the layout (top and bottom views) of the STEVAL-ISV020V1. Figure 2. Layout ‐ silkscreen view Figure 3. Layout - top view Figure 4. Layout ‐ bottom view DocID025592 Rev 2 7/9 9 Revision history 3 STEVAL-ISV020V1 Revision history Table 2. Document revision history Date Revision 28-Nov-2013 1 Initial release. 2 Updated Section : Features on page 1 (updated values of “First startup at Vin” and “Input voltage working range”). Updated Section : Description on page 1 (updated values of “Harvest energy from PV panels supplying”, added extended operating ranges). Updated Section 1: Schematic and bill of material on page 2 (updated web link). Updated Figure 1: Schematic on page 3 (updated value of C9 capacitor, minor modifications). Updated Table 1: Bill of material on page 4 (removed “PV panel” item, updated numbering and quantity of several items, updated “Technol. info.” of J1, J2, J3 jumper, updated values and manufacturer information of C9 capacitor, updated “More information” for several items). Minor modifications throughout document. 05-May-2014 8/9 Changes DocID025592 Rev 2 STEVAL-ISV020V1 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. 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