BQ76952EVM: Reduce CHG/DSG FET turn on/off time

Beginner

Part Number: BQ76952EVM

Tool/software:

Hi Team,

Currently, we are using 5.1K series resistors on CHG/DSG pin. What's the minute value for these resistor we can utilize?

Customers are wondering to r the reduce FET turn on/off time

4 months ago

0 Beginner 4 months ago

TI__Intellectual 2261 points

Customers are wondering to reduce FET turn on/off time

0 Alexis_H 4 months ago

TI__Genius 9005 points

Hello Beginner,

The smallest resistor value that you can utilize will also depend on your MOSFET selection, however, it is not recommended below 100 ohms to provide some isolation for the pin from the current path. Chapter 7 CHG Driver Current Paths in the application note, Multiple FETs with the BQ76952/BQ76942, may help further with that.

This previous forum post, BQ76952 DSG MOS ON Delay Too Long, may be able to help provide more information regarding reducing FET turn on/off time.

Best Regards,
Alexis

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BQ76952EVM: Reduce CHG/DSG FET turn on/off time