Description

The LTC3350IUHF#PBF is a fault-protected controller IC designed for transformer-based bidirectional active balancing of multi-cell battery stacks. This IC integrates all the necessary gate drive circuitry, precision current sensing, fault detection circuitry, and a robust serial interface with a built-in watchdog timer.

Specifications and features

- Bidirectional Synchronous Flyback Balancing

- Supports up to 6 Li-Ion or LiFePO4 cells in series

- Up to 10A balancing current (set by externals)

- Seamless integration 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 systems with a voltage over 800V

- Uses simple 2-winding transformers

- 1MHz serial interface with 4-Bit CRC packet error checking

- Individually addressable with 5-bit address

- Numerous fault protection features

- Available in 48-Lead Exposed Pad QFN and LQFP Packages

Application Scenarios

- Electric Vehicles/Plug-in HEVs

- High Power UPS/Grid Energy Storage Systems

- General Purpose Multicell Battery Stacks

Comparison