STEVAL-ISV021V1, energy harvesting system based on SPV1050
Contents
1. Lor AN4396 yY EIERE Application note STEVAL ISV021V1 energy harvesting system based on SPV1050 PV panel and battery Domenico Ragonese Introduction The STEVAL ISV021V1 is a demonstration kit which consists of a complete energy harvesting module based on the SPV1050 ULP energy harvester and battery charger having the purpose to show the electrical performance of the power converter and many other fundamental electrical quantities related to the overall system The SPV1050 power manager is configured as a buck boost converter fitting the electrical characteristics of the mounted PV panel and battery A power monitoring board along with a software GUI are used to monitor and to graph both of the PV panel and battery voltage and current and system performances like MPPT accuracy and conversion efficiency The STEVAL ISV021V1 represents the standalone harvesting module that can be interfaced with a wireless sensor node to provide the microcontroller transmitter and sensors with the energy scavenged and stored into the battery Furthermore the STEVAL ISV021V1 harvesting module embeds an extension connector to interface and to monitor of some of the SPV1050 input and output signals through a microcontroller based board The complete STEVAL ISV021V1 kit is shown in Figure 1 Figure 1 Power monitoring board left and harvesting module right top view W I gt BE _ KT June 2014 DoclD025514 Rev2. Support for 1 1 BT1 Li lon SMD Keystone 3008 battery D A This jumper allows the S connection of the STORE s 2 1 J6 e SE SMD FCI 95293 101 03LF pin to the voltage regulator Jump U4 in case the external sampling is OFF 3 2 U3 Flexible PV SMD SANYO AM 1801 2 PV panels connected in panel series This jumper disconnects the PV panel U3 in case 5 1 J4 aed Lee SMD FCI 95293 101 03LF an alternative supply is Jump required and connected to H CN E This jumper allows the 3 wa Pitch connection of the source 6 1 J5 vay SMD FCI 95293 101 03LF to the harvester U1 in switch 100 mils case the external sampling is OFF 2 way Pitch Input connector for VP W conn 100 mits SMP FCI 994930 TOILE external PV panel or TEG 96EVNV Jel49 eW JO q pue 20Eueuae 6L 9 L AY VLSSZcOdIS0q Table 1 Harvesting module BOM continued Tolerance Voltage Technol Sect Item Qty Ref Part value S Watt Package Manufacturer Manufacturer code More information current info 8 1 U2 SPV1050 ST Harvester and thin film battery manager 9 1 C6 1 uF 15 25 V X5R 0603 Murata GRM188R61E105KA12D Input capacitance 10 1 Rmpp 10MQ 1 0 1 0603 VISHAY CRCWo060310M0FKEA Resistor partitioning for MPP track A TE Resistor partitioning for S 11 1 Rmpps 680 kO 1 0 1 0603 Connectivity CRG0603F680K MPP setting S o 12 1 Rin 3 MQ 0 01 0603 VISHAY CRCW06
3. 8 J7 jumper J7 CLOSE 1 2 not used OPEN 1 2 enables ambient light sensing from the monitoring board Function Table 9 J23 jumper CLOSE 1 2 STORE pin supplied by the USB cable Functi uneton OPEN 1 2 STORE pin supplied by the energy harvesting source Table 10 SW1 and SW2 sw1 SW2 CLOSE 1 3 LDO1 DISABLED CLOSE 1 3 LDO2 DISABLED Function CLOSE 2 3 LDO1 ENABLED CLOSE 2 3 LDO2 ENABLED FLOATING EXTERNAL CONTROL BY J25 FLOATING EXTERNAL CONTROL BY J25 DoclD025514 Rev 1 13 19 Harvesting module and power monitoring board AN4396 5 14 19 Harvesting module and power monitoring board The harvesting module can be used both as a standalone device or with the power monitoring board In the standalone mode leave the CN1 open and connect the jumpers as described below e Close pins 2 3 of the J4 and close pins 1 2 of the J5 in order to supply the SPV1050 device by the on board PV panel e Close pins 1 3 of the J6 in order to connect the on board battery Figure 5 Jumper configuration for harvester module in stand alone mode A RoHS COMPLIANT 200295 C CI20130572 R1 SS Ki m S D Gi gt Ka ke oa e Ka m lt gt c gt Si x v e a Ki e E It is possible to monitor the system behavior and efficiency by following the listed steps e Place a voltmeter between pins 1 2 of the CN1 Vin e Replace the short on the J5
4. by an ammeter lin e Place a voltmeter between the TP16 and TP8 Vert e Replace the short on the J6 by an ammeter Ipatt The STEVAL ISV021V11 kit includes the power monitoring board and the related GUI which runs on the Windows XP and Windows 7 OSs The power monitoring board and the related GUI allow a quick and intuitive way to monitor the system performances DoclD025514 Rev 1 ky AN4396 Harvesting module and power monitoring board Before to connect the harvester module to the power monitoring board set the jumpers as described below e Close pins 2 3 of the J4 in order to supply the SPV1050 device by the on board PV panel e Close pins 2 3 of the J5 in order to allow the power monitoring to sense the input voltage and current e Close pins 2 3 of the J6 in order to allow the power monitoring to sense the battery voltage and current e Close pins 2 3 of the J7 in order to allow the power monitoring to sense the ambient light on the PV panel Figure 6 Jumper configuration for harvester module connected to power monitoring board EFL700A39 COMPLIANT N 2002 9S EC 20130572 R1 SS sc Ki m So o CO 3 ES Ki b i o Dd m lt gt c gt gt V an m A 1NO ts MONITORING B E 2 d DoclD025514 Rev 1 15 19 Harvesting module and power monitoring board AN4396 Figure 7 shows the connection of the harvesting module and the power monitorin
5. 033M00FKEA Input resistor partitioning 0 o z S n m g 13 1 c34 10nF 15 16V X7R 0603 Murata GRM188R71C103KA01D Voltage sampling time 3 5 constant capacitance el Q LPS4018 223ML_ e 14 1 L1 22 uH 20 Coilcraft LPS5010 223ML_ DC DC inductor 8 XFL2006 223ME_ a Close 1 2 LDO1 is S 3 wa Pitch SC a ARC GW vay SMD FCI 95293 101 04LF Close 2 3 LDO1 ol D switch 100 mils oO controlled by external a signal 16 1 C5 100 nF 10 6 3 V X5R 0402 AVX 04026D104KAT2A Close 1 2 LDO2 is 3 wa Pitch Neser 17 1 SW2 ee S SMD FCI 95293 101 04LF Close 2 3 LDO2 s switch 100 mils ro controlled by external signal 18 1 C4 100 nF 10 6 3 V X5R 0402 AVX 04026D104KAT2A Ieuateu Jo q pue seWaYydS 96EVNV L A8Y VLSScOdIS0qd 64 2 Table 1 Harvesting module BOM continued Tolerance Voltage Technol Sect Item Qty Ref Part value S Watt Package Manufacturer Manufacturer code More information current info D 19 2 Gg 47 uF 20 6 3V X5R 0805 KEMET C0805C476M9PAC7800 Capacitor on STORE net D lt UVP voltage sampling 3 21 1 Cuvp 470 nF 15 10 V X5R 0603 Murata GRM188R71A474KA61D delay time constant S capacitance Q S 22 1 Ruvp 6 8 MQ 1 0603 VISHAY CRCW06036M80FKEA S 23 1 Reoc 0 75 MQ 1 0603 VISHAY CRCW0603750KFKEA VEOC 4 15 V S VUVP 3 75 V S 24 1 Rout 3 MQ 1 0603 VISHAY CRCW
6. 06033M00FKEA gt Ambient light sensor z 25 1 U7 SFH5711 SMD OSRAM SFH 5711 place on the same solder T side of the PV panel U3 bd gt 26 1 R12 80 kQ 1 0 1 0603 VISHAY CRCW060382KOFKEA E 27 1 J7 SMD Eien SMD FCI 95293 101 03LF jumper 100 mils X 283 1 Us ES oe ad ST STLQ50C R o S 29 1 SB49 5 36 kQ 0 1 0603 Panasonic ERA3AEB5361V 30 1 SB50 2 05 KQ 1 0 1 0603 VISHAY CRCW06032K05FKEA 31 2 Ge 1 uF 15 25 V X5R 0603 Murata GRM188R61E105KA12D fe 3 8 caja Med Fitch ap FCI 95293 101 03LF RRS TRN D jumper 100 mils USB 96EVNV Jel49 eW JO q pue 20Eueuae 64 8 L A9Y VLSScOdIS0d Table 1 Harvesting module BOM continued Sect Item Qty Ref Part value Tolerance Voltage Watt technol Package Manufacturer Manufacturer code More information current info m 34 1 J28 Micro USB SMD Molex 47346 0001 External charge from USB o ert 2 Ia pm tevin 2 54mm SDM Samtec SMH 108 02 G D Cones Fe Mls D conn extensions iv fe 5 lael g gz eel 2 54mm SMD Samtec SMH 108 02 G D SEENEN ct conn monitoring board S n o 5 S Screw a 37 4 RS 325 687 and 525 701 support E a Ieuateu JO Ig pue seWaYydS 96EVNV AN4396 Harvesting module layout 2 Harvesting module layout Figure 3 and Figure 4 show the component placement and the layout top an
7. 1 1 19 www st com Contents AN4396 Contents 1 Schematic and bill of material 0 0 c eee 3 2 Harvesting module layout 9 3 Harvesting module connectors 0000 eee eee eee eee 11 4 Jumpers and switches 0 00 c cece ees 13 5 Harvesting module and power monitoring board 14 6 Revision history wiodsda tees Sone k eee te Sa dw ta eee ee ee 18 2 19 DoclD025514 Rev 1 ky AN4396 Schematic and bill of material 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 ISV021V1 product folder on www st com d DoclD025514 Rev 1 3 19 6L P L A8Y VLSScOdIS0d Figure 2 Harvesting module schematic USB EXTERNAL SUPPLY AMBIENT LIGHT SENSOR S J7 44 v J23 D A AMBIENT_LIGHT_PIN ae ADJ OUT S 00 O XK 2 3 SUPPLY_SFH5 11 GND 4 AMBIENT_LIGHT NC IN T OSTORE STL
8. Initial release Changes DoclD025514 Rev 1 d AN4396 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 If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein UNLESS OTHERWISE SET FORTH IN ST S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY FITNESS F
9. OR A PARTICULAR PURPOSE AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION OR INFRINGEMENT OF ANY PATENT COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT ST PRODUCTS ARE NOT DESIGNED OR AUTHORIZED FOR USE IN A SAFETY CRITICAL APPLICATIONS SUCH AS LIFE SUPPORTING ACTIVE IMPLANTED DEVICES OR SYSTEMS WITH PRODUCT FUNCTIONAL SAFETY REQUIREMENTS B AERONAUTIC APPLICATIONS C AUTOMOTIVE APPLICATIONS OR ENVIRONMENTS AND OR D AEROSPACE APPLICATIONS OR ENVIRONMENTS WHERE ST PRODUCTS ARE NOT DESIGNED FOR SUCH USE THE PURCHASER SHALL USE PRODUCTS AT PURCHASER S SOLE RISK EVEN IF ST HAS BEEN INFORMED IN WRITING OF SUCH USAGE UNLESS A PRODUCT IS EXPRESSLY DESIGNATED BY ST AS BEING INTENDED FOR AUTOMOTIVE AUTOMOTIVE SAFETY OR MEDICAL INDUSTRY DOMAINS ACCORDING TO ST PRODUCT DESIGN SPECIFICATIONS PRODUCTS FORMALLY ESCC QML OR JAN QUALIFIED ARE DEEMED SUITABLE FOR USE IN AEROSPACE BY THE CORRESPONDING GOVERNMENTAL AGENCY Resale of ST products with provisions different from the statements and or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever any liability of ST ST and the ST logo are trademarks or registered trademarks of ST in various countries Information in this document supersedes and replaces all information previously supplied The ST logo is a registered trademark of STMicroele
10. Q50 CON4A R12 L cw 82k Ohm F uF c15 F 1uF me STORE TP9 a es 0 Q o e SOURCE HARVESTER AND 1 J28 ale ont GND BATTERY MANAGER TO J5 2 PV PANEL 2 59 06 2 1 SOURCE PVA 5 A TP8 al VpATT_out_1 2 1 DE U3 u1 Micro USB J4 D i gt IN_HV 1 3 TP16 7 2 Rmpp Kei f 10 MOhm I Ga i 1 mP we MPP 4 15 _srore 3 6V TP1 NPP SET 4 BATT SGND MPP REF 3 SPV1050 it CONF bs LDO2_3 3V Ri 1 SGND 2 LDO2 colo i 1 EDOTLEN gt Mi tino 4 O1LD01_1 8v i 21 Ga MPP_REF SEND STORE 6 7 8 197 R TP4 TP2 1 MPP_SET ca LDO2_EN R Be eng luvP IP6 ps T LDO1 10nF g 7 LDO2 A UVP c5 c4 L E 100nF T 100nF it x Rn E Reoc 3 MOhm 0 75 MOhm IP5 E Gees 1 EOC E Cuvp Rout 470 nF 3 MOhm SGND PONER ii EXTENSION MONITORING a Leet conn 1 4 9 O00 lt BATT_CHG LDO1_EN gt gt sw2 gt BEEN J27 SW SLIDE SPST er SOURCE 2 1 SOURCE 23 V OLDO1_1 8V PV 4 3 PV Vbatt 6 5 Vbatt 4 VBATT_out 8 7 VBATT_out GO 315 7 lo hahsksl SUPPLY _SFH57 10 a SUPPLY_SFH5771 swt AMBIENT_LIGHT_PIN 12 47__AMBIENT_LIGHT_PIN AMBIENT LIGHT 44 13 AMBIENT LIGHT SW SLIDE SPST 16 15 STORE alelehhddhd 225 q gaa IS olaa 7 lt BK AM03471 jel4ayew Jo Ig pue 20Eueuae 96EVNV L AY VLSSZcOdIS0q DLG Table 1 Harvesting module BOM Sect Item Qty Ref Part value Tolerance Voltage Watt technol Package Manufacturer Manufacturer code More information current info
11. V1050 device e J25 16 pin extension connector It can be used to connect the harvesting module to an external load such as a wireless sensor node module Table 3 J25 connector J25 pin number 1 2 3 4 5 6 7 8 9 10 11 12 13 16 SPV1050 LDO1_EN LDO2_EN pin signal CONTROL CONTROL BATT_CHG BATT_CONN UDO LDO1 GND LDO1_EN CONTROL input it provides the connection to an external signal that controls the LDO1_EN pin In this case the SW1 must be left open If the LDO1 is not used the LDO1_EN pin has to be connected to ground LDO2_EN CONTROL input it provides the connection to an external signal that controls the LDO2_EN pin In this case the SW2 must be left open If the LDO2 is not used the LDO2_EN pin has to be connected to ground BATT_CHG output battery charge status pin This is an open drain pin that has to be pulled up by a resistor 10 MQ typical to Vstore Voltage rail BATT_CONN output battery connection status pin This is an open drain pin that has to be pulled up by a resistor 10 MQ typical to Vstore voltage rail LDO2 LDO2 3 3 V output voltage pin LDO1 LDO1 1 8 V output voltage pin GND ground pin of the extension board J27 16 pin monitoring connector It provides the connection to the power monitoring board DoclD025514 Rev 1 11 19 Harvesting module connectors AN4396 12 19 Table 4 J27 connector Signal J27 pin numbe
12. ctronics All other names are the property of their respective owners 2014 STMicroelectronics All rights reserved STMicroelectronics group of companies Australia Belgium Brazil Canada China Czech Republic Finland France Germany Hong Kong India Israel Italy Japan Malaysia Malta Morocco Philippines Singapore Spain Sweden Switzerland United Kingdom United States of America www st com ky DoclD025514 Rev 1 19 19
13. d bottom views of the harvesting module Figure 3 Harvesting module top view 2528 L64 2 JUMPER POSITION Figure 4 Harvesting module bottom view 2528 L64 2 T J EL 642 SS 67 87 SN d DoclD025514 Rev 1 9 19 Harvesting module layout AN4396 In order to ensure a proper noise rejection that could impact the SPV1050 device performance the following indications must be followed in the PCB routing e The exposed pad and the pins PGND and GND must be connected to the same ground plane e The capacitor on the STORE pin must be placed as closest as possible to the related pin e The capacitors on the LDO1 and LDO2 pins must be placed as closest as possible to the related pins d 10 19 DoclD025514 Rev 1 AN4396 Harvesting module connectors 3 d Harvesting module connectors The STEVAL ISV021V1 provides a set of connectors for the input sources which are described below e CN1 2 pin connector This connector is provided to supply the SPV1050 device by a supply source alternative to the on board PV panel Table 2 CN1 connector Signal CN1 pin number 1 SOURCE 2 SOURCE The J4 must be open before an external source is connected to the CN1 For the proper selection of the external source please refer to the datasheet of the SP
14. g board of the STEVAL ISV021V1 kit Figure 7 Power monitoring board left and energy harvesting module right CR ve 8 WI ae EI Note 16 19 The power monitoring board allows to measure up to three voltage current pairs when connected to a generic DUT This board can acquire up to 12800 samples per second when a single channel is active For multi channel acquisition the available bandwidth is split among the three channels Two channels can acquire currents in the range 1 pA 15 mA while the third one works in the range 1 uA 1 mA This board can be used as a general purpose measurement board and in this case is a part of the STEVAL ISV021V1 kit The ambient light irradiation the input supply operating points the input voltage and current of the harvested source and the output stage operating points the battery voltage and current are sampled The sampled parameters can be displayed by the GUI once the monitoring board is connected to a PC or laptop through the dedicated USB cable Please note that connecting the harvesting module to the power monitoring board while this is not powered through the USB cable causes current draining from the battery and hence potential damages The GUI is arranged in four selectable tabs e Configuration allowing the setup of the power monitoring board e Data visualization not used with the STEVAL ISV021V1 e Power visualizati
15. on displaying the power sink by the load eventually connected to the extension connector J25 e Efficiency displaying the system performances both in terms of MPPT accuracy and power efficiency DoclD025514 Rev 1 ky AN4396 Harvesting module and power monitoring board Just as an example Figure 8 the efficiency tab e The GUI will show the actual PV panel curve according to the current ambient light conditions e Onthe PV panel curve the green dot indicates the real working point while the blue dot indicates the maximum power point e The table on the top right side of the screen shows the main system parameters and performances A detailed description of the GUI is available in the Software user manual UM1752 Figure 8 STEVAL ISV021V1 efficiency tab 8 SPIDEr Configuration Utility Configuration Data Visualization Power Visualization Efficiency Description Value Input Power mW 0 551 Output Power mW 0 432 Lux 790 MPPT Max mW 0 558 Voc V 7 892 789 lux Panel Name w8_up_1 ei E Sa T T T T 3 0 3 5 4 0 45 5 0 Voltage V O Ideal MPPT O Measured MPPT O Max MPPT Power Monitoring board Connect J met Connected device None d DoclD025514 Rev 1 17 19 Revision history AN4396 6 18 19 Revision history Table 11 Document revision history Date 03 Jun 2014 Revision 1
16. r 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SUPPLY_ AMBIENT_ AMBIENT_ SFH5711 LIGHT_PIN LIGHT GND SOURCE PV Vbatt VBATT_OUT SOURCE PV Harvesting source current sensing pin If the power monitoring board is used then the jumper J5 must be left open otherwise pins 1 and 2 of the J5 must be shorted VBATT VBATT_OUT Battery current sensing pin If the power monitoring board is used then the jumper J6 must be left open otherwise pins 1 and 2 of the J6 must be shorted SUPPLY_SFH5711 Power supply of the ambient light sensor pin placed on the top side of the board AMBIENT_LIGHT AMBIENT_LIGHT_PIN Ambient light current sensing pin If the power monitoring board is used then the jumper J7 must be left open GND Ground pin d DoclD025514 Rev 1 AN4396 Jumpers and switches 4 d Jumpers and switches Table 5 J4 jumper J4 CLOSE 1 2 harvesting board supplied by the on board PV panel Funetien OPEN 1 2 enables an alternative source from the CN1 Table 6 J5 jumper J5 CLOSE 1 2 bypasses power monitoring sense and supply directly the SPV1050 OPEN 1 2 power monitoring enabled from the power monitoring board Function Table 7 J6 jumper J6 CLOSE 1 2 bypasses power monitoring sense and connects the battery to the BATT Function pin OPEN 1 2 enables sensing from the monitoring board Table
Download Pdf Manuals
Related Search