STEVAL-ISB012V1 STMicroelectronics

STEVAL-ISB012V1 Battery monitoring system demonstration board based on the STC3105 Data brief Features The STC3105 device uses the Coulomb counter method to track state-of-charge (SOC) or to track when the battery is charging or discharging Accurate measurements of the battery voltage to estimate the battery state-of-charge Battery parameters are sent to the PC via USB using a virtual COM port and can be observed using HyperTerminal as well as a GUI The board can also display parameters on the LCD Charging and discharging status is displayed by the + and - sign respectively on both the LCD and LED The board also shows low voltage and SOC alarms The board can monitor a battery with a capacity up to +/-10950 mAh RoHS compliant Description The STEVAL-ISB012V1 demonstration board provides a simple, compact solution to monitor voltage, current, and capacity of single cell Li-Ion batteries using the STC3105, which has a highly efficient gas gauge. The STEVAL-ISB012V1 demonstration board has an internal charger in order to charge the battery and can be powered through a USB port or by using a DC adaptor. November 2011 Doc ID 022472 Rev 1 1/6 For further information contact your local STMicroelectronics sales office. www.st.com 6 Obsolete Product(s) - Obsolete Product(s) 9 *1 5617 %2 & &/, & , B %2 %2 &) *1 9 Circuit schematic STEVAL-ISB012V1 1 Circuit schematic Figure 1. Circuit schematic (1 of 3) &5 2&2170, 5 2// 2 1 ( 6(&75 , & & 26 & B , 1 < < 5 5 0 0++ 0 0 %2 2 7 5 5 26 & B 7 28 B 7-7- %*B3 7/ 3%0B6 B& 7&.3 * B-B 3%B 2*B7 -7- 7,3 * B7- & & 63% B %B63B )) SS %2 2 7 5 5 6 7 B%3 %3 * B & & 72 5 5 9 0 0 6:6: B 966B 3% 3% 72 3% 3% 3% 3% 3% 9 9 9 B 9 % BB338& *1 3 & B B 30 7 1 7 6 B &) * B 3 & *B-- 706 B7 3 3 & B 2 6 & B , 1 3 2 : B 31 & 6% 8 3B 3 3 & B 2 6 & B 7 2 8 3 & & & & & & & & 26 & B , 1 % 0B 3 3 B 26 & B ,1 3 26 & B 7 28 /2 B6 : B 3 3 B 2 6 & B 7 2 8 3 6 7 3 6 7 3 *1 0 0 66 77 )) && 77 B 3 6 3 *1 9 /& B B 3% 3% ( 57 B(1 3 /& B B %3 B 3 : 3 . 8 3% /& B 56 B3 /& B B 3% 3 3% /& B ( B 3 B966 B /& B B %3 3 3% 3% 3% 3% 3% 3% 9 9 9 9 B/%2B3% / 6B3 B 2 B 6,B3 66B 13B B6&.B3 %3 3B*&+5 B 3% B 5 5 5 5 72 .. - - - - &) * B 3 & &) * B 3% *1 *1 &2&2 11 &2&2 11 5 5 5 5 /( B %3 21- * 85 8 &0 3(2 1)7 5 , , 6 /( B %3 9 5 5 0 0 6 7 & & 1,% * 77 7 25 ( , 5 0 <21 , 5 5 5 5 B % N N 1 0 & 6 B 7 / 0 & & 5 5 9 4 4 55 66 77 & 6 B 7 6 6 5 5 5 5 & & 6 B 7 6 & / 6:6: 6& / 5 5 &*B % &* 5 5 & 6 B 7 7 % &D RWKH G && 66 77 ,, 44 77 & & 0 0 B % & & & & 5 5 X X)) ( B * 7 & + R H G 5 5 5 5 LL LL RR OOOO PP KK PP 5H I N N N N 33 22 :: (( 55 6(6( // (( ,, && 22 77 11 5 5 /(/( .. 66 77 ,, // 77 9 7 . 5 ( 3 ) , 4 % 2 ) / % / 0 5 4 / 6 7 & % 77 ( 5 <&+ 5 *( 5 7 92/ 287387 5* B&+ 3 5 5 9 0 0 5 5 3 6:6: N N 33 22 :: (( 55 6(6( // (( ,, && 22 77 11 % 9 3636 66 77 / / 88 // 66 5577 5* B&+ 3 9 5* &+ 1 7 8 5 5 *1 : //B 3 7 9 35 2* 7 8 N N *1 *1 *1 & & 9 & & 6 B 7 7 % 7% && 66 77 ** 55 & & 3636 66 77 / / 88 )) QQ B 7 2 8 - V 2/6 Doc ID 022472 Rev 1 Obsolete Product(s) - Obsolete Product(s) *1 9 3 06 3 06 18 0( 3 0, 06 3 02 06 3 /( /( B- 3 -7 9 3 9& X)X) 92 92 9, 86 8 8 8 8 ( . 4(2 , . 4 2%3)34 /2 / 4% ..% 4 0) /& 34 4( 9 8 8 S)S) S)S) Q 9% 7 9& 1& Q)Q) / 9, 9% 7 8 8 9 96 83 15 Q5 Q)Q) Q)Q) Q)Q) Q)Q) 86 96 86 9 9% 7 8 8 Q)Q) Q5 S)S)