LTC3300-2 Addressable High Efficiency Bidirectional Multicell Battery Balancer FEATURES DESCRIPTION n Bidirectional Synchronous Flyback Balancing The LTC 3300-2 is a fault-protected controller IC for of Up to 6 Li-Ion or LiFePO Cells in Series transformer-based bidirectional active balancing of multi- 4 n Up to 10A Balancing Current (Set by Externals) cell battery stacks. All associated gate drive circuitry, n Integrates Seamlessly with the LTC680x Family of precision current sensing, fault detection circuitry and a Multicell Battery Stack Monitors robust serial interface with built-in watchdog timer are n Bidirectional Architecture Minimizes Balancing integrated. Time and Power Dissipation Each LTC3300-2 can balance up to 6 series-connected n Up to 92% Charge Transfer Efficiency battery cells with an input common mode voltage up to n Stackable Architecture Enables >800V Systems 36V. Charge from any selected cell can be transferred at n Uses Simple 2-Winding Transformers high efficiency to or from 12 or more adjacent cells. Each n 1MHz Serial Interface with 4-Bit LTC3300-2 has an individually addressable serial interface, CRC Packet Error Checking allowing up to 32 LTC3300-2 devices to interface to one n Individually Addressable with 5-Bit Address control processor. n Numerous Fault Protection Features n Fault protection features include readback capability, cy- 48-Lead Exposed Pad QFN and LQFP Packages n clic redundancy check (CRC) error detection, maximum AEC-Q100 Qualified for Automotive Application on-time volt-second clamps, and overvoltage shutoffs. APPLICATIONS The related LTC3300-1 offers a serial interface that allows n the serial ports of multiple LTC3300-1 devices to be daisy- Electric Vehicles/Plug-in HEVs n chained without opto-couplers or isolators. High Power UPS/Grid Energy Storage Systems n All registered trademarks and trademarks are the property of their respective owners. General Purpose Multicell Battery Stacks TYPICAL APPLICATION High Efficiency Bidirectional Balancing NEXT CELL ABOVE CHARGE Balancer Efficiency + SUPPLY CHARGE CELL 12 LTC3300-2 (I 1-6) 100 CHARGE RETURN 4 DC2064A DEMO BOARD (I 1-6) DISCHARGE ISOLATOR I = I = 2.5A CHARGE DISCHARGE 5 V = 3.6V CELL ADDRESS n + 1 + 95 CELL 7 CHARGE + CHARGE I DISCHARGE CELL 6 DISCHARGE 90 RETURN 4 85 4 SERIAL I/O LTC3300-2 80 6 8 10 12 + CHARGE I 4 NUMBER OF CELLS (SECONDARY SIDE) CHARGE CELL 1 SUPPLY 33001 TA01b 4 ISOLATOR 5 ADDRESS n 33002 TA01a NEXT CELL BELOW Rev. B 1 Document Feedback For more information www.analog.com CHARGE TRANSFER EFFICIENCY (%)LTC3300-2 ABSOLUTE MAXIMUM RATINGS (Note 1) Total Supply Voltage (C6 to V ) .................................36V Voltage Between Pins Input Voltage (Relative to V ) Cn to Cn-1* .............................................. 0.3V to 6V C1 ........................................................... 0.3V to 6V InP to Cn-1* .......................................... 0.3V to 0.3V + I1P ....................................................... 0.3V to 0.3V BOOST to C6 .......................................... 0.3V to 6V I1S, I2S, I3S, I4S, I5S, I6S .................... 0.3V to 0.3V SDO Current ...........................................................10mA CSBI, SCKI, SDI ....................................... 0.3V to 6V G1P, GnP, G1S, GnS, BOOST Current ............... 200mA V , SDO ............................................... 0.3V to 6V Operating Junction Temperature Range (Notes 2, 7) REG RTONP, RTONS ...........0.3V to Min V + 0.3V, 6V LTC3300I-2 ........................................ 40C to 125C REG CTRL, BOOST, WDT ....0.3V to Min V + 0.3V, 6V LTC3300H-2 ...................................... 40C to 150C REG A4, A3, A2, A1, A0 .......0.3V to Min V + 0.3V, 6V Storage Temperature Range .................. 65C to 150C REG *n = 2 to 6 PIN CONFIGURATION TOP VIEW TOP VIEW G6S 1 36 C5 G6S 1 36 C5 I6S 2 35 G5P I6S 2 35 G5P G5S 3 34 I5P G5S 3 34 I5P I5S 4 33 C4 I5S 4 33 C4 G4S 5 32 G4P G4S 5 32 G4P I4S 6 49 31 I4P I4S 6 49 31 I4P G3S 7 V 30 C3 V G3S 7 30 C3 I3S 8 29 G3P I3S 8 29 G3P G2S 9 28 I3P G2S 9 28 I3P I2S 10 27 C2 I2S 10 27 C2 G1S 11 26 G2P G1S 11 26 G2P I1S 12 25 I2P I1S 12 25 I2P UK PACKAGE LXE PACKAGE 48-LEAD (7mm 7mm) PLASTIC QFN 48-LEAD (7mm 7mm) PLASTIC LQFP T = 150C, = 34C/W, = 3C/W JMAX JA JC T = 150C, = 20.46C/W, = 3.68C/W JMAX JA JC EXPOSED PAD (PIN 49) IS V , MUST BE SOLDERED TO PCB EXPOSED PAD (PIN 49) IS V , MUST BE SOLDERED TO PCB Rev. B 2 For more information www.analog.com RTONS 13 48 V REG 47 A4 RTONP 14 46 A3 CTRL 15 CSBI 16 45 A2 44 A1 SCKI 17 SDI 18 43 A0 42 BOOST SDO 19 41 BOOST WDT 20 + V 21 40 BOOST 39 C6 I1P 22 38 G6P G1P 23 C1 24 37 I6P 48 V RTONS 13 REG 47 A4 RTONP 14 CTRL 15 46 A3 CSBI 16 45 A2 44 A1 SCKI 17 43 A0 SDI 18 42 BOOST SDO 19 WDT 20 41 BOOST + V 21 40 BOOST 39 C6 I1P 22 38 G6P G1P 23 37 I6P C1 24