HI
The operation of the BQ25792 is normal.
However, audible noise occurs when in Taper Charge (CV mode).
Is there any way to solve it??
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HI
The operation of the BQ25792 is normal.
However, audible noise occurs when in Taper Charge (CV mode).
Is there any way to solve it??
Hi Swengwoo,
I apologize. OOA is REG0x12[1] not REG0x13[1]. If disabling PFM does help, can you provide your schematic and oscilloscope shot of V(BAT), V(SYS), I(BAT) and whichever SWx is switching. Are you running at 750kHz or 1.5MHz?
Regards,
Jeff
Hi Swengwoo,
The SW node looks reasonable. I assume that either IBAT or VBAT is oscillating at a frequency < 20kHz since audible? Can you provide those waveforms?
Regards,
Jeff