Part Number:TMDXEVM8148
Hi TI support,
1. In DM8148 datasheet it is written that 1.8V supplies should be brought up before 3.3V, however in DM8148 evaluation board schematic from Mistral I found TPS_VDDA_1V8 is generated from TPS_BCK2_3V3 which is 3.3V rail. So there seems violation of power sequencing. Can anybody explain why?
2. Since TPS65232A2 is not recommended for new designs & we are not using PCIe feature can we eliminate this IC with below implementation,
=> We are having +24V rail so generate +5V from 24V rail & use 5V power good signal to enable separate 3.3V regulator. Again this 3.3V regulator will have input from 24V.
Awaiting your response.
Regards,
jagdish