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UCC28630: About no load loss

Kaji@PAN
Mastermind 7815 points
Part Number: UCC28630

Hi,

I am considering using UCC28630 devices.
Among them, I would like to ask you about no load loss.
Looking at the first page of the data sheet, it is stated that the no-load loss is less than 30mW.
However, Table 9 of the data sheet describes the standby power for 115Vac and 230Vac, but they are 57mW and 60mW, respectively.
The loss is twice that for 30mW. What is the difference?
Best regards,
  • 0
    TI__Expert 8210 points

    Kaji-san

    The bullet "Low Power Modes for <30-mW System Standby" on the first page of the UCC28630 datasheet describes what is possible with UCC28630, but in order to achieve it the entire system needs to be designed for low standby power consumption. 

    The example design in section 9 of the datasheet is designed to represent an AC/DC adapter, where the standby power requirement is less than 75mW.  To prevent it from being over-designed this higher limit was used.

    Best Regards,

    Eric