The LTP2884 contains the LTM2884 Isolated USB mmodule. Both the ADuM4160 and LTM2884 support USB 2.0 isolation up to Full Speed throughput (12 Mbps). Could it be that the debugger requires high-speed (480 Mbps)?
I also developed with LTC4015 before and met issue like you. Vin: 24V. Vout: 16.8V 04cell Li-ion, 3Ah
I also tried with EVB, and it burned , the rest is digital USB isolator is still alive
On my PCB, it don't start charging and i check all register,…