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power supply to my circuit

Narendra kumar
Prodigy 160 points

I'm using the TPS54383EVM for converting 12v,2A 4000mah battery to 5v and 3.3v and it gives the o/p of 2A for each channel....
i want to give supply from 5v rail to 8*1 analog multiplexer SN74LV4051A, 5 no.of motor drivers DRV8835, 6 no.of INA326and LAUNCHXL-F28377S's jp5
from 3.3v rail to LAUNCHXL-F28377S's jp4 and MSP-EXP430G2
and i'm connecting another 2 motor drivers DRV8833 to 9v from the 12v battery using 7809 regulator and 4no. of TLO74 to the battery
my question is...is it safe to connect like that? is the current from the battery is required enough to all the components?

can u please tell me where i has to connect to the ground on LAUNCHXL-F28377S...when i'm applying 3.3v and 5v externally to jp4 and jp5 by removing jp1 and jp2.
hope u understand my problem...
please any one help me...

  • 0
    Guru 30330 points
    Narendra,

    Specifcally for powering the LAUNCHXL-F28377S, it looks like you will want to connect the external 5V, 3.3V and GND to the Boosterpack headers as well as connecting JP4 and JP5. Be sure to disconnect JP1 and JP2 as well.

    I am not sure I understand the system architecture enough to answer whether it is safe or not to connect your components in that way. I think putting together a block diagram of how you plan to connect everything would help rather than writing it out in text. You will need to understand each device's power requirements to know if you have enough to power everything.

    -Mark
  • 0 in reply to Mark Labbato
    Guru 30330 points
    Narendra,

    Have you been able to resolve your questions?

    Thanks,
    Mark
  • 0 in reply to Mark Labbato
    Prodigy 160 points
    pleasee check out my circiut diagram...prepared by me..
    please help me....in giving power requirements....