for further information contact your local stmicroe lectronics sales office. november 2014 docid025591 rev 3 1/9 STEVAL-ISV019V1 evaluation board for spv1050 ulp energy harvester a nd battery charger C boost configuration data brief features first startup at vin = 500 mv input voltage working range: 150 mv vin v eoc end of charge battery voltage: v eoc = 4.25 v battery undervoltage protection: v uvp = 3.7 v applications charge any battery chemistry, including lithium based, nimh, solid state thin film and 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. description the STEVAL-ISV019V1 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 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-ISV019V1 is optimized to: harvest energy from pv panels supplying 0.5 v v mp 2.5 v and 30 a i mp 20 ma. charge a battery with 3.7 v undervoltage protection threshold (v uvp ) and 4.2 v end of charge voltage threshold (v eoc ). nevertheless, few easy changes on the application components (input and output resistor partitioning, c in capacitor) allow to use a different pv panel and source (like teg), and a battery by setting the v mpp_set , the v uvp and the v eoc thresholds according to the new source and load. more in detail, operating ranges can be extended as follows: v mp from 150 mv up to 5 v, i mp up to 100 ma, v uvp down to 2.2 v and v eoc up to 5.3 v. www.st.com
schematic and bill of material STEVAL-ISV019V1 2/9 docid025591 rev 3 1 schematic and bill of material the schematic, bill of material and gerber files ca n be downloaded from the design resources tab of the STEVAL-ISV019V1 product folder on www.st.com .
STEVAL-ISV019V1 schematic and bill of material docid025591 rev 3 3/9 figure 1. schematic , 1 b + 9 / b + 9 3 * 1 ' , 1 b / 9 6 * 1 ' / ' 2 b ( 1 / ' 2 b ( 1 & 2 1 ) 8 9 3 ( 2 & % $ 7 7 b 2 . % $ 7 7 b 2 . % $ 7 7 b & + * % $ 7 7 b & + * 9 % $ 7 7 / ' 2 / ' 2 0 3 3 0 3 3 6 ( 7 0 3 3 5 ( ) 6 7 2 5 ( 9 % $ 7 7 / ' 2 3 9 3 9 / ' 2 6 7 2 5 ( 6 7 2 5 ( 6 7 2 5 ( 7 3 ( 2 & ( 2 & & 1 3 9 , 1 7 3 8 9 3 7 3 0 3 3 6 ( 7 7 3 0 3 3 6 ( 7 & 6 : 6 : & ) 6 : 6 : & q ) & 5 7 3 , 1 b / 9 5 5 7 3 * 1 ' * 1 ' 8 6 3 9 6 3 9 / / & 1 ( ; 7 b 6 8 3 ( ; 7 b 6 8 3 7 3 6 7 2 5 ( & 7 3 * 1 ' 7 3 * 1 ' 7 3 3 9 7 3 3 9 - - - 5 5 7 3 * 1 ' 7 3 * 1 ' 5 & 1 2 8 7 3 8 7 6 7 3 0 3 3 7 3 0 3 3 5 5 & q ) & & 1 / ' 2 b ( 1 & q ) & - - 5 5 $ 0 9
schematic and bill of material STEVAL-ISV019V1 4/9 docid025591 rev 3 table 1. bill of material sect. item q.ty reference part / value toler. % voltage current watt technol. info. package manufacturer manufacturer code more information dc-dc input section 1 1 u1 spv1050 vfqfpn 3 x 3 x 1 20l (code a0br) st spv1050 2 1 cn1 2-ways screw connector te connectivity 282834-2 input connector for pv panel or teg 3 1 c1 4.7 f 15% 16 v 0805 murata gcm21br71c4 75ka73l input capacitance 4 0 c2 (dnm) 4.7 f 15% 16 v 0805 murata gcm21br71c4 75ka73l 5 3 j1, j2, j3 jumper pitch 2.54 mm th enable/disable mppt 8 1 r1 0 w 1% 0805 vishay crcw08052m7 0fkea resistor partitioning for mpp track/setting 9 1 r2 1.5 m w 1% 0805 vishay crcw08051m5 0fkea 10 1 r3 8.2 m w 1% 0805 yageo 232273468205 11 1 l1 22 h 20% coilcraft lps4018- 223ml_ dc-dc inductor 12 1 c8 10 nf 15% 16 v x7r 0603 murata grm188r71c1 03ka01d voltage sampling time constant capacitance
STEVAL-ISV019V1 schematic and bill of material docid025591 rev 3 5/9 battery section 13 1 cn4 2-way screw connector te connectivity 282834-2 connector for external supply of pin store 14 1 c9 47 f 20% 10 v 0805 tdk c2012x5r1a47 6m125ac 15 1 r4 6.2 m w 5% 0805 rs rs-0805-6m2- 5%-0.125w resistor partitioning for uvp, eoc, protection setting 16 1 r5 499 k w 1% 0805 vishay crcw0805499 kfkea 17 1 r6 2.7 m w 1% 0805 vishay crcw08052m7 0fkea 18 1 cn2 8-way screw connector te connectivity 282836-8 connector for battery and battery status signals ldos section 19 2 c6, c7 100 nf 10% x7r 0603 kemet c0603c104k4r ac tank capacitor for ldos 21 2 sw1, sw2 5-pin male stripline pitch 2.54 mm th close 2 - 3: ldo disabled close 1 - 2: ldo enabled floating: external control through cn3 23 1 cn3 4-way screw connector te connectivity 282836-4 connector for ldos enable connection table 1. bill of material (continued) sect. item q.ty reference part / value toler. % voltage current watt technol. info. package manufacturer manufacturer code more information
schematic and bill of material STEVAL-ISV019V1 6/9 docid025591 rev 3 list of test points 25 1 tp1 true hole pv+ pin sensing and soldering 26 1 tp2 true hole mpp pin sensing and soldering 27 1 tp3 true hole mpp-set pin sensing and soldering 28 1 tp4 true hole store pin sensing and soldering 29 1 tp5 true hole ulp pin sensing and soldering 30 1 tp6 true hole eoc pin sensing and soldering 31 1 tp7 true hole gnd pin sensing and soldering 32 1 tp8 true hole gnd pin sensing and soldering 33 1 tp9 true hole in_lv pin sense (for probe scope) 34 1 tp10 true hole gnd pin sensing (for probe scope) table 1. bill of material (continued) sect. item q.ty reference part / value toler. % voltage current watt technol. info. package manufacturer manufacturer code more information
docid025591 rev 3 7/9 STEVAL-ISV019V1 layout 9 2 layout from figure 2 to figure 4 show the component placement and the layout (top a nd bottom views) of the STEVAL-ISV019V1. figure 2. layout - silkscreen view figure 3. layout - top view figure 4. layout - botto m view
revision history STEVAL-ISV019V1 8/9 docid025591 rev 3 3 revision history table 2. document revision history date revision changes 27-nov-2013 1 initial release. 29-apr-2014 2 updated section : features on page 1 (updated values of first startup at vin and input voltage workin g 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 values and manufacturer information of c9 capacitor, updated technol. info . of j1, j2, j3 jumper, quantity of r6 item, item number s and more information for several items). minor modifications throughout document. 13-nov-2014 3 updated figure in cover page.
docid025591 rev 3 9/9 STEVAL-ISV019V1 9 important notice C please read carefully stmicroelectronics nv and its subsidiaries (st) r eserve the right to make changes, corrections, enha ncements, modifications, and improvements to st products and/or to this document at any time without notice. purchasers should obta in the latest relevant information on st products before placing orders. st products are sold pursuant to sts terms and conditions of sale in place at the time of order acknowledgement. purchasers are solely responsible for the choice, s election, and use of st products and st assumes no liability for application assistance or the design of purchasers products. no license, express or implied, to any intellectual property right is granted by st herein. resale of st products with provisions different fro m the information set forth herein shall void any w arranty granted by st for such product. st and the st logo are trademarks of st. all other product or service names are the property of their respective owners. information in this document supersedes and replace s information previously supplied in any prior vers ions of this document. ? 2014 stmicroelectronics C all rights reserved
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