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TMS320C6678: C6678 CVDD供电问题

Feng Dong
Intellectual 855 points
Part Number: TMS320C6678
Other Parts Discussed in Thread: UCD7242

您好，C6678供电问题请教一下，给CVDD供电电压是浮动的吗？我看官方的原理图，用的是UCD7242，然后还有电流采样，有点看不明白，所以还是CVDD供电是浮动的还是固定的？

  • 0
    TI__Guru**** 357097 points

    是浮动的，Smartreflex技术会自动根据芯片运行情况调整电压。如果使用固定电压供电，当电压低于smart reflex 要求的电压，芯片不一定能正常工作。 当电压高于CVDD额定电压，不仅芯片的功耗可能会急剧上升，也不排除芯片可能出现不可预知的问题。