LTC3300-1

RECOMMENDED FOR NEW DESIGNS

High Efficiency Bidirectional Multicell Battery Balancer

Data Sheet (Rev. 0) Product Selection Table
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Overview

  • Bidirectional Synchronous Flyback Balancing of Up to 6 Li-Ion or LiFePO4 Cells in Series
  • Up to 10A Balancing Current (Set by Externals)
  • Integrates Seamlessly with the LTC680x Family of Multicell Battery Stack Monitors
  • Bidirectional Architecture Minimizes Balancing Time and Power Dissipation
  • Up to 92% Charge Transfer Efficiency
  • Stackable Architecture Enables >1000V Systems
  • Uses Simple 2-Winding Transformers
  • 1MHz Daisy-Chainable Serial Interface with 4-Bit CRC Packet Error Checking
  • High Noise Margin Serial Communication
  • Numerous Fault Protection Features
  • 48-Lead Exposed Pad QFN and LQFP Packages
  • AEC-Q100 Qualified for Automotive Applications

The LTC3300-1 is a fault-protected controller IC for transformer-based bidirectional active balancing of multicell battery stacks. All associated gate drive circuitry, precision current sensing, fault detection circuitry and a robust serial interface with built-in watchdog timer are integrated.

Each LTC3300-1 can balance up to 6 series-connected battery cells with an input common mode voltage up to 36V. Charge from any selected cell can be transferred at high efficiency to or from 12 or more adjacent cells. A unique level-shifting SPI-compatible serial interface enables multiple LTC3300-1 devices to be connected in series, without opto-couplers or isolators, allowing for balancing of every cell in a long string of series-connected batteries.

When multiple LTC3300-1 devices are connected in series they can operate simultaneously, permitting all cells in the stack to be balanced concurrently and independently. Fault protection features include readback capability, cyclic redundancy check (CRC) error detection, maximum on-time volt-second clamps, and overvoltage shutoffs.

Features
LTC3300-1 SPI-compatible serial interface in which each chip in the stack communicates bidirectionally to the chips of the same type above and below it via currents. There is no limit to the stack height. Large common mode voltage differences are handled by each LTC3300-1. The microprocessor in the BMS system communicates ONLY with the bottom chip in the stack and subsequently all of the chips use the same fixed internal address.
LTC3300-2 SPI-compatible serial interface in which each chip has a unique 5-bit pin-strapped address. The microprocessor in the BMS system communicates directly with every chip in the stack with common mode voltage differences handled by digital isolators or opto-couplers. Because of the 5-bit address, the stack height is limited to 32 LTC3300-2 ICs or 192 cells (~800V). There are 5 pins which have a different assignment, all of them serial interface related.

Applications

  • Electric Vehicles/Plug-in HEVs
  • High Power UPS/Grid Energy Storage Systems
  • General Purpose Multicell Battery Stacks
LTC3300-1
High Efficiency Bidirectional Multicell Battery Balancer
High Efficiency Bidirectional Balancing Balancer Efficiency Product Package 1 Product Package 2
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 3

Technical Articles 4

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Battery Monitors & Fuel Gauges 2
LT8584
RECOMMENDED FOR NEW DESIGNS 2.5A Monolithic Active Cell Balancer with Telemetry Interface
LTC6804-1
NOT RECOMMENDED FOR NEW DESIGNS 12 Channel Multicell Battery Monitor with Daisy Chain Interface, Generation 3
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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LTC3300-1
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

eval board
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DC2100B-D

12 Cell 4A Stackable Slave Bidirectional Active Cell Balancer Featuring LTC6804-2 and LTC3300-1(x2)

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Product Details

Demonstration Circuit DC2100B-D is a stackable, bidirectional cell balancer slave board using the LTC6804-2 and the LTC3300-1 ICs to achieve active balancing of up to 12 Li-Ion cells. It requires the DC2100B-C for proper operation. The DC2100B-D uses a single LTC6804-2 Multi-Cell Addressable Battery Stack Monitor IC to measure cell voltages and two LTC3300-1 Synchronous Flyback ICs to provide active cell balancing. The DC2100B-C controller board contains a PIC18F47J53 microcontroller, the LTM2884 isolated USB transceiver, the LTC6804-2, two LTC3300-1 ICs, and the LTC6820 isoSPI Interface IC to facilitate isolated communication. Up to seven DC2100B-D boards can be connected to a DC2100B-C to build a stacked system of eight total boards.

eval board
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DC2064A

OBSOLETE: LTC3300ILXE-1 | LTC6803IG-2 High Frequency Bidirectional Multicell Battery Balancer- Companion Board DC590B

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Product Details

This evaluation board is obsolete and no longer recommended. The replacement board is the DC2100B-C.

DC2064A Demo Board for:
LTC3300-1 High Efficiency Bidirectional Multicell Battery Balancer
LTC6803-2 and -4 Multicell Battery Stack Monitor

eval board
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DC2100B-C

12 Cell 4A Controller Board Bi-Directional Active Cell Balancer with LTC3300-1, LTC6804-2 and LTC6820

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Product Details

Demonstration Circuit DC2100B-D is a stackable, bidirectional cell balancer slave board using the LTC6804-2 and the LTC3300-1 ICs to achieve active balancing of up to 12 Li-Ion cells. It requires the DC2100B-C for proper operation. The DC2100B-D uses a single LTC6804-2 Multi-Cell Addressable Battery Stack Monitor IC to measure cell voltages and two LTC3300-1 Synchronous Flyback ICs to provide active cell balancing. The DC2100B-C controller board contains a PIC18F47J53 microcontroller, the LTM2884 isolated USB transceiver, the LTC6804-2, two LTC3300-1 ICs, and the LTC6820 isoSPI Interface IC to facilitate isolated communication. Up to seven DC2100B-D boards can be connected to a DC2100B-C to build a stacked system of eight total boards.

eval board
schematic 23
DC2100A-C

OBSOLETE: 12 Cell 4A Controller Board Featuring LTC6804-2 and LTC3300-1 (x2) for Bidirectional Active Cell Balancing

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Product Details

This evaluation board is obsolete and no longer recommended. The replacement board is the DC2100B-C.

Demonstration Circuit DC2100A-C is a stand-alone Active Cell Balancer for balancing up to 12 Li-Ion cells; it also is the master controller board when used with DC2100B-D slave boards for a stackable battery balancing solution. It consists of the LTC6804-2 Multicell Addressable Battery Stack Monitor and two LTC3300-1 Active Cell Balancers. It contains a PIC18F47J53 microcontroller, the LTM2884 Isolated USB Transceiver, and an LTC6820 isoSPI Interface IC to facilitate isolated communication with the LTC6804-2 and the LTC3300-1 ICs. Up to 7 DC2100B-D boards can be connected to the DC2100A-C to build a stacked system of 8 total boards.

eval board
schematic 24
DC2100A-D

OBSOLETE: 12 Cell 4A Stackable Slave Bidirectional Active Cell Balancer Featuring LTC6804-2 and LTC3300-1(x2)

Buy Now View Details

Product Details

This evaluation board is obsolete and no longer recommended. The replacement board is the DC2100B-D.

Demonstration Circuit DC2100A-D is a stackable, bidirectional cell balancer slave board using the LTC6804-2 and the LTC3300-1 ICs to achieve active balancing of up to 12 Li-Ion cells. It requires the DC2100A-C for proper operation. The DC2100B-D uses a single LTC6804-2 Multi-Cell Addressable Battery Stack Monitor IC to measure cell voltages and two LTC3300-1 Synchronous Flyback ICs to provide active cell balancing. The DC2100A-C controller board contains a PIC18F47J53 microcontroller, the LTM2884 isolated USB transceiver, the LTC6804-2, two LTC3300-1 ICs, and the LTC6820 isoSPI Interface IC to facilitate isolated communication. Up to seven DC2100A-D boards can be connected to a DC2100A-C to build a stacked system of eight total boards.
DC2100B-D
12 Cell 4A Stackable Slave Bidirectional Active Cell Balancer Featuring LTC6804-2 and LTC3300-1(x2)
DC2100B-D Demo Board DC2100B-D Demo Board DC2100B-D Demo Board DC2100B-D Demo Board DC2100B-D Demo Board DC2100B-D Demo Board DC2100B - Demo Board Image DC2100B - Schematic
DC2064A
OBSOLETE: LTC3300ILXE-1 | LTC6803IG-2 High Frequency Bidirectional Multicell Battery Balancer- Companion Board DC590B
DC2064A Demo Board DC2064A Demo Board DC2064A Demo Board DC2064A Demo Board DC2064A Demo Board DC2064A - Schematic
DC2100B-C
12 Cell 4A Controller Board Bi-Directional Active Cell Balancer with LTC3300-1, LTC6804-2 and LTC6820
DC2100B-C Demo Board DC2100B-C Demo Board DC2100B-C Demo Board DC2100B-C Demo Board DC2100B-C Demo Board DC2100B-C Demo Board DC2100B - Demo Board Image DC2100B - Schematic
DC2100A-C
OBSOLETE: 12 Cell 4A Controller Board Featuring LTC6804-2 and LTC3300-1 (x2) for Bidirectional Active Cell Balancing
DC2100A - Schematic
DC2100A-D
OBSOLETE: 12 Cell 4A Stackable Slave Bidirectional Active Cell Balancer Featuring LTC6804-2 and LTC3300-1(x2)
DC2100A - Schematic

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