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? 2004 microchip technology inc. ds21771b-page 1 PS7051/ps7052 features ? ps700 tested, fully populated modules for evaluation designed to work with 1 and 2 series cell lithium configurations performs all major battery management functions including accurate capacity monitoring smbus v1.1 with pec/crc-8 communication with system host high accuracy measurement of charge/discharge current, voltage and temperature with on-chip 15-bit integrating a/d precise capacity reporting using microchip patented algorithms and 3d battery cell models 3d models and ?learned? parameters stored in integrated eeprom extremely low-power operation: - sleep mode: < 20 a typical - run mode: < 100 a typical - sample mode: < 50 a typical complete hardware and software development tools available overall mechanical dimensions: - 0.248 w x 1.200 l (inches) - 6.30 w x 30.50 l (millimeters) board photo ordering information part number description PS7051 li ion - 1 series cell ps7052 li ion - 2 series cells ps700 battery monitor and safety module
PS7051/ps7052 ds21771b-page 2 ? 2004 microchip technology inc. 1.0 general description the PS7051 and ps7052 modules are complete smart battery controller subsystems based on the microchip ps700 battery monitor. the modules are designed to operate in a battery pack consisting of one (1) or two (2) series connected lithium cells. the module con- sists of the microchip ps700 fuel gauge ic and a seiko battery protection ic. 1.1 quick start ? pack assembly follow these directions to assemble a pack with the ps705x module. use standard precautions when handling static sensitive devices. modules should be connected to battery cells in the order indicated below to insure proper start-up and operation. wires should be attached to the modules first and then connected to the battery cells as instructed. the connection sequence is critical to successful use of the ps700 family of cmos asics. the pack positive should be securely connected to the module first, followed by pack negative. step 1: connect wires to module. use large diameter wire (18 awg-20 awg) or tabs for current carrying lines from vr, v2 (ps7052 only) and v1. all others are signal only lines (24 to 22 awg). step 2: connect v1 to the most positive point on the battery cell stack. step 3: connect vr to the most negative point on the battery cell stack. step 4: for ps7052 only, connect v2 to the middle of the cell stack. step 5: connect external connector to b-, c, d and b+. step 6: program the assembled pack using microchip?s powermate? software and powercal? 2 board or powerinfo? 2 board hardware. the eeprom param- eters can be changed at will using the utilities on the ee page in the powermate software. step 7: calibrate the pack using the powermate software and powercal 2 board hardware. the pack is now ready for use. figure 1-1: PS7051 board assembly (side 1) figure 1-2: PS7051 board assembly (side 2) v1 ntc1 ntc2 b+ b- cd v2
? 2004 microchip technology inc. ds21771b-page 3 PS7051/ps7052 figure 1-3: ps7052 board assembly (side 1) figure 1-4: ps7052 board assembly (side 2) v1 ntc1 ntc2 b+ b- cd v2 v2 2
PS7051/ps7052 ds21771b-page 4 ? 2004 microchip technology inc. 2.0 functional description 2.1 ps700 fuel gauge the module fuel gauge provides state-of-charge (soc) and battery status data in accordance with the smbus standards version 1.1. the ps700 monitors the cell voltages, battery temperature and current to determine soc and battery status. the state-of- charge calculations are compensated for cell self- discharge. the remaining time calculation is compen- sated for temperature and discharge rate. the param- eters for determining battery status flags and alarm thresholds are all programmable, as is the battery design capacity and the battery performance model data. please refer to the ps700 data sheet (ds21760) for details on configuring the ps700. 2.2 primary safety the primary safety circuit provides cell protection from conditions of overcharge, overdischarge and over- current. analog ics from seiko measure individual cell voltages and voltage across the discharge fet. these values are compared against internal reference values and the gates of two n-channel power mosfets are controlled based on the comparison results. 3.0 board description pcb schematics and bill of materials are included here for completeness. to download full size schematic and bom, please visit the microchip web site (www.microchip.com). 3.1 mechanical dimensions overall dimensions: 248 mils w x 1200 mils l
? 2004 microchip technology inc. ds21771b-page 5 PS7051/ps7052 figure 3-1: PS7051 board schematic 1 2 3 4 56 a b c d 6 5 4 3 2 1 d c b a 1 microchip technology, inc. powersmart products group 2745 dallas parkway, suite 400 plano, tx 75093 469-241-0087 voice/469-241-0106 fax 1 PS7051 03-826142 3.1 5-nov-2003 15:27:57 03-826142 rev 3-1.sch sheet of *** confidential *** this document contains proprietary information that is the intellectual property of microchip technology, inc. size drawing no. code ident no. rev b file scale none title approvals date contract no. http://www.microchip.com 12 drawn checked r15 1.0k r3 221k r4 680 r5 680 v cell 1 2 v cell 2 1 ntc 6 sr 8 gnd 7 smb-clk 3 smb-dta 4 r osc 5 u1 ps700 r11 470 vr v1 ntc1 ntc2 pack connection cell positive (+) cell negative (-) thermistor connections b+ c d b- r8 0.020 c11 100 nf c1 100 nf r7 6.49k r. casebolt 9/15/2003 for revision history, see 826142 change log 3 1 2 d1 cmszda5v6 connection ground plane c3 1.0 nf 3 4 2 1 5 6 8 7 q1 si6880edq v dd 2 v ss 3 vm 1 co 5 do 4 u2 s8241a
PS7051/ps7052 ds21771b-page 6 ? 2004 microchip technology inc. table 3-1: PS7051 bill of materials symbols description manufacturer manufacturer pn qty. raw pcb, PS7051 microchip 04-826142 rev 3.1 1 c3 capacitor, ceramic, 1.0 nf, 25v, +/-10%, x7r dielectric, 0402 panasonic ecj-0eb1e102k 1 c1, c11 capacitor, ceramic, 100 nf, 16v, +80%/-20%, y5v dielectric, 0402 bc components 0402f104z160bt 2 d1 dual zener diode, 5.6v +/-10%, 200 mw, common anode, sot-323 central semi. diodes inc. cmszda5v6 az23c5v6w-7 1 q1 mosfet, dual n-channel enhancement mode, -20v, -6a, 18 mohm, 1.19w, tssop (8/4.4 mm body width) package vishay siliconix si6880edq 1 r7 resistor, film, 0402, 1%, 6.49 kohms panasonic erj-2rkf6491x 1 r15 resistor, film, 0402, 5%, 1.0 kohms panasonic erj-2gej102x 1 r11 resistor, film, 0402, 5%, 470 ohms panasonic erj-2gej471x 1 r3 resistor, film, 0603, 1%, 221 kohms panasonic erj-3ekf2213v 1 r4, r5 resistor, film, 0805, 5%, 680 ohms panasonic erj-6geyj681v 2 r8 resistor, metal strip, 1206, 1%, 0.020 ohms vishay wsl1206-0.020-1%-r86 1 u1 ic, low-voltage fuel gauge, -20c to +70c, tssop (8/4.4 mm body width) package microchip ps700-i/st 1 u2 ic, battery protection circuit, li ion, 1-cell, -40c to +85c, sot-23-5 package seiko instruments s-8241abpmc-gbp-t2 1
? 2004 microchip technology inc. ds21771b-page 7 PS7051/ps7052 figure 3-2: ps7052 board schematic 1 2 3 4 56 a b c d 6 5 4 3 2 1 d c b a 1 microchip technology, inc. powersmart products group 2745 dallas parkway, suite 400 plano, tx 75093 469-241-0087 voice/469-241-0106 fax 1 ps7052 03-826143 3.1 3-nov-2003 13:44:52 03-826143 rev 3-1.sch sheet of *** confidential *** this document contains proprietary information that is the intellectual property of microchip technology, inc. size drawing no. code ident no. rev b file scale none title approvals date contract no. http://www.microchip.com 12 drawn checked r15 2.0k r3 221k r2 470 r4 680 r5 680 v cell 1 2 v cell 2 1 ntc 6 sr 8 gnd 7 smb-clk 3 smb-dta 4 r osc 5 u1 ps700 r11 470 r12 470 vr v1 v2 ntc1 ntc2 pack connection cell connections cell return (-) thermistor connections b+ c d b- 3 4 2 1 5 6 8 7 q1 tpcs8209 r8 0.020 c11 100 nf c12 100 nf c1 100 nf c2 100 nf r7 6.49k r. casebolt 8/5/2003 for revision history, see 826143 change log 3 1 2 d1 cmszda5v6 connection ground plane c3 1.0 nf v dd 5 vc 4 v ss 6 vm 3 co 2 do 1 u2 s8242a
PS7051/ps7052 ds21771b-page 8 ? 2004 microchip technology inc. table 3-2: ps7052 bill of materials symbols description manufacturer manufacturer pn qty. raw pcb, ps7052 microchip 04-826143 rev 3.1 1 c3 capacitor, ceramic, 1.0 nf, 25v, +/-10%, x7r dielectric, 0402 panasonic ecj-0eb1e102k 1 c1-c2, c11-c12 capacitor, ceramic, 100 nf, 16v, +80%/-20%, y5v dielectric, 0402 bc components 0402f104z160bt 4 d1 dual zener diode, 5.6v +/-10%, 200 mw, common anode, sot-323 central semi. diodes inc. cmszda5v6 az23c5v6w-7 1 q1 mosfet, dual n-channel enhancement mode, -20v, -5a, tssop (8/4.4 mm body width) package toshiba tpcs8209(te12l) 1 r7 resistor, film, 00402, 1%, 6.49 kohms panasonic erj-2rkf6491x 1 r2, r11-r12 resistor, film, 0402, 5%, 470 ohms panasonic erj-2gej471x 3 r15 resistor, film, 0402, 5%, 2.0 kohms panasonic erj-2gej202x 1 r3 resistor, film, 0603, 1%, 221 kohms panasonic erj-3ekf2213v 1 r4, r5 resistor, film, 0805, 5%, 680 ohms panasonic erj-6geyj681v 2 r8 resistor, metal strip, 1206, 1%, 0.020 ohms vishay wsl1206-0.020-1%-r86 1 u1 ic, low-voltage fuel gauge, -20c to +70c, tssop (8/4.4 mm body width) package microchip ps700-i/st 1 u2 ic, battery protection circuit, li ion, 2-cell, -40c to +85c, sot-23-6 package. seiko instruments s-8242aag-m6t2g 1
? 2004 microchip technology inc. ds21771b-page 9 PS7051/ps7052 figure 3-3: PS7051 dimension details
PS7051/ps7052 ds21771b-page 10 ? 2004 microchip technology inc. figure 3-4: ps7052 dimension details
? 2004 microchip technology inc. ds21771b-page 11 PS7051/ps7052 4.0 development tool summary microchip provides all the necessary hardware and software to enable easy tailoring of battery control algorithm parameters and cell performance models to meet specific application requirements and attain the highest accuracy available anywhere. table 4-1 summarizes the development tool offering from microchip to support the ps705x. please refer to the microchip web site for ordering information and design documentation (including schematics) at www.microchip.com. 4.1 reference documents this data sheet provides an overview of the ps705x batter monitor and safety module. for further infor- mation on the ps700 and development tool operations, please refer to the documents listed in table 4-2 available for download at www.microchip.com. table 4-1: microchip development tool summary table 4-2: microchip reference documents development tool use powerinfo? 2 hardware with powermate? software (ps051) read and write ps700 registers and eeprom powercal? 2 hardware with powermate software (ps052) read and write ps700 registers and eeprom, calibration document number documents available ds21760 ps700 battery monitor
PS7051/ps7052 ds21771b-page 12 ? 2004 microchip technology inc. notes:
? 2004 microchip technology inc. ds21771b-page 13 PS7051/ps7052 information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by updates. it is your responsibility to ensure that your application m eets with your specifications. no representation or warranty is given and no liability is assumed by microchip technol ogy incorporated with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise. use of microc hip?s products as critical com- ponents in life support systems is not authorized except with express written approval by mi crochip. no licenses are con- veyed, implicitly or otherwis e, under any intellectual property rights. trademarks the microchip name and logo, the microchip logo, accuron and powersmart are registered trademarks of microchip technology incorporated in the u.s.a. and other countries. smartshunt is a registered trademark of microchip technology incorporated in the u.s.a. powercal, powerinfo, powermate, powertool, smartsensor and smarttel are trademarks of microchip technology incorporated in the u.s.a. and other countries. all other trademarks mentioned he rein are property of their respective companies. ? 2004, microchip technology incorporated. printed in the u.s.a., all rights reserved. printed on recycled paper.
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