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IS IT POSSIBLE TO TURN OF BATTERY IC AND POWER MANAGMENT SYSTEM THROUGH SOFTWARE(can RBFET(Q1) gate be turned off)

Aagneya C
Prodigy 80 points
Other Parts Discussed in Thread: BQ25601

The battery charger Ic and the power managment IC BQ25601RTWR has to be turned off for testing purpose.since the 5v supply is directly given to it in our design can we disable the IC through turning off the RBFET(q1) gate that is connected to the VBUS.if not , is there any other way that this IC can be turned off.

  • 0
    TI__Mastermind 32150 points

    Hello, 

    On the BQ25601 you can use EN_HIZ =1 (REG00 bit 7) to turn on HIZ mode. HIZ mode will not fully "turn off" the IC, but it will turn off the REGN LDO and switching stops. In this mode your input supply will no longer provide power to system load and battery. The battery will discharge through Q4 to power the system. 

    There is not a way to turn off Q1 RBFET via I2C communications.  

    Regards,

    Garrett