The EMB1428 Switch Matrix Gate Driver IC is designed to work in conjunction with EMB1499 DC/DC Controller IC to support TI’s switch matrix based active cell balancing scheme in a battery management system. The EMB1428 provides 12 floating MOSFET gate drivers necessary for balancing up to 7 battery cells connected in a series stack. Multiple EMB1428 ICs may be used together to balance a stack of more than seven battery cells.
The EMB1428 integrated circuit interfaces with the EMB1499 DC/DC controller to control and enable charging and discharging modes. The EMB1428 uses an SPI bus to accept commands from the main controller (CPU/MCU) on which battery cell should be charged or discharged and to report back any faults to the main controller (CPU/MCU).
| Number of series cells (min) | 6 |
| Vin (max) (V) | 5.5 |
| Features | Cell balancing, Multi-cell support, Stackable (built-in interface) |
| Device type | Cell monitor and balancer |
| Number of series cells (max) | 14 |
| Operating temperature range (°C) | -40 to 125 |
| Rating | Automotive |
| Communication interface | SPI |
| Operating current (typ) (µA) | 750 |
| WQFN (RHS) | 48 | 49 mm² 7 x 7 |
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