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Question on TPS92210

Chee Kang Lim
Intellectual 265 points
Other Parts Discussed in Thread: TPS92210, UCC28810

Hi, I am designing a LED driver with universal input. However the efficiency must not drop below 85% at full load.

Is TPS92210 a better choice or UCC28810?

Power factor 0.90 or better.

Dimming required? No need at this moment.

NO electrolyte capacity is allowed.

 

PCB sizes:

1)  30x38.4mm for 350mA

2) 37x42.1mm for 500mA

Thank you.

 

Best Regards,

CK

  • 0
    TI__Intellectual 2540 points

    Hi CK,

    Can you provide some additional information about the requirements here:

    • number of LEDs and configuration (series, parallel, or combination) - if combination, a basic drawing might be helpful
    • LED Vf and/or LED part numbers.
    • Target output power
    • Just to clarify - no Electrolytic capacitors on either the input or output
    • What type of LED application is this?  Light bulb replacement or other?  If light bulb replacement, what is the shape/type?

     

    In the mean time, you might view the following reference designs:

     

     

    Thank you,

    John

  • 0 in reply to John Perry
    TI__Intellectual 2540 points

    Sorry, the reference designs did not post correctly in the previous message.

     

    TPS92210: PMP3664

    UCC28810: PMP4301

     

     

    John

  • 0 in reply to John Perry
    Intellectual 265 points

    Hi John,

    12 LED in series

    Total Vf 40V or higher

    Target output power : 350mA 40V = 14W

                                      500mA 40V = 20W

    Prefered not to use E cap.

    Light bulb replacement for PAR38

     

    Best Regards,

    CK

     

  • 0 in reply to Chee Kang Lim
    Intellectual 265 points

    Hi John,

    If the efficiency for 12 LED at 186, 350 and 500 mA respectively with inputs of 120Vac and 240Vac and also 100- 260Vac universal voltage exceed 85% it will be good. Can the above reference design achieve this?

    Thank you.

    Best Regards,

    CK