Hello Sir:
We are drawing TPS25846 schematic and we have below requirements.
1. output power from TPS25846 to device should be over 12W, and needs to support IOS device and Android device.
2. if the output connector cable length is around 1.5 meter, is there anything we need to pay attention?
According our two requirements, would you please help to review our schematic?
Looking forward your feedback.
Thanks a lot.
Hi Statham,
For your two requirements, I have some comments below:
1.For our device TPS25846, our DCDC can output 3.5A, but according to charging protocol BC1.2, it just can drive the 1.5A.
2.For the choice of cable compensation, could you please tell me what is the resistance value of your cable?
For the schematic review, I have some comments below:
1.The boot capacitor connection is wrong, please refer to our EVM.
wrong:
correct:
2.Please add a 0.1uF capacitor in the CSN/OUT.
BR,
Kuno
Hi Statham.
According to our datasheet, if your cable resistance is 90mohm, you can set the Rimon=3.62Kohm.(90mohm / 100 mohm * 4.02 kohm=3.62kohm)
Best Regards,
Kuno
