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DM3730 Powering

Newton
Expert 1125 points
Other Parts Discussed in Thread: TPS65023, DM3730

I have a few questions on DM3730, trying to power it with TPS65023:

  • What is the value for  VDD_MMC voltage.  Wiki documentation indicated it was 3V, but OMAP documentation said 3.3V

 

  • What the DM3730 core voltage should be set to?   Is it 1.2V?  TPS65023 only selects between 1.8V and 3.3V unless an external  resistor divider is used.  Is it SW that changes the core voltage through the I2C interface after power up ?
  • 0
    TI__Guru 56685 points

    Newton,

    1. vdds_mmc1 has a typ range of 3.0-3.3V either is fine. Max = 3.6 Min=2.7V -- from Table 3-4 of Data sheet
    2. vdd_Core max is 1.5V -- Operating voltage is determined by OPP mode shown on tables 4-18 through 4-20 in data sheet.

    Hope this answers your questions. as a general guideline, If a descripency exists, the Data Sheet rules above all.

    JaceH