Other Parts Discussed in Thread: AM3352
Hello,
When charging a LI-PO battery with a custom tps65217 + am3352 board, I'm measuring high voltages (~2V) at MUX_OUT output when the analog multiplexer is configured to MUX[2:0]= 101 (VICH, Voltage proportional to charge current) and ICHRG[1:0] is set to 10 (500mA).
According to the datasheet the voltage should be arounf 4.5 / 0.5 = 2.25V, so this reading makes sense somehow.
But the TPS65217 is designed to work specifically with the am335x processor series and the typical application schematics within the tps65217 datasheet shows MUX_OUT directly connected to the CPU AIN4 pin which can only handle voltages up to 1.8V.
Is there anything I did wrong or is this a design flaw?