• State TI Thinks Resolved
  • +1 person also asked this people also asked this
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 301 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

UCC12050: Operating current

Ruixin Feng
Intellectual 2555 points

Part Number: UCC12050

Hi team,

Could you pls help me understand the operating current when on load in datasheet? Which part in the device consume the current?

If customer want operating current when no load to be lower than 10mA, can it be realized by optimized design? Or do you have any other recommended isolated power module with lower operating current?

Thanks!

B&Rs,

Rayna

  • 0
    TI__Mastermind 33135 points

    Ruixen,

    UCC12050 no load input current is about 50 mA. Many controller PMICs are designed for low standby current or low current consumption during no load operation but bear in mind that although this device is offered in an IC type package, it is a fully functional isolated DC/DC switching power converter. Inside the IC package is a primary control die, a secondary side SR control die, planar transformer and communication. It's intended function is to provide isolated bias needed for digital signal isolators, isolated current and voltage sensors, isolated CAN transceivers, etc. The small size, low height profile and high integration are only made possible by operating at extremely high frequency (8MHz clock freq). During no load operation, frequency dependent loses dominate and during full load operation conduction losses dominate. The difference between no load to full load is small for UCC12050 which is only rated for 500 mW output power. The priorities for developing UCC12050 into a 16 pin SOIC package are Isolation, small size, EMI, thermal management, regulation, then efficiency. What is driving your requirement of less than 10 mA no load current?

    Regards,

    Steve M