Other Parts Discussed in Thread: BQ76930
Hi Sir,
My customer will using bq76930*2 for 20S e-bike solutions, pls advise if we can use bq76200 for 20S application(+bq76930*2)?
Thanks, Ian.
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Hi Ian,
The BQ76200 has a 100V abs max on the highest pins. Leaving about 16V for the charge pump voltages with variation in operating conditions would put the maximum BAT+ voltage at 84V. You will need some budget for transients on BAT+ and PACK+ also. For lower voltage cells and quiet environments it may work acceptably, but e-bikes are traditionally a noisy environment. Certainly check the system specifications and budget, but the BQ76200 may not be the best choice for a driver.
Hi Ian,
You might look at isolated gate drivers, see options at http://www.ti.com/gatedrivers . Some designers will design their own gate driver circuit for the voltage, or use low side switching and isolate the communication path.