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HIGH BAY LED DRIVER 120W

Luca Ceccarelli
Prodigy 20 points
Other Parts Discussed in Thread: UCC28610, UCC256301, UCC25710

Hello,

I would desing a AC/DC CC led driver and I found PMP4317.1 in the Reference Desing that could fit the application but I would modifiy di max output current up to 1000mA.

Another better solution would be to make a 480/500W led driver with 4 different control channal with a max CC of 1000mA  with indipendent analog and pwm dimming each.

Could you please help me in this task and give some suggestion?


Thanks in advanced,
Luca.

  • 0
    TI__Mastermind 26445 points
    Hi Luca,

    Thanks for your interest in TI. I would suggest taking a look at PMP20946 which is a PFC + LCC reference design. It is only 200W but this design allows for analog dimming of the output current. You would be able to use the same scheme for a 500W design.

    www.ti.com/.../PMP20946

    Best Regards,
    Ben Lough
  • 0 in reply to Benjamin Lough
    Prodigy 20 points

    Hello,

    thanks. 

    I had a look, the design seems to have lower efficiency and it is more affected in terms of performance during diming compared to PMP4317. 

    Because of I need a overall power output of 480W splitted in (4x120W) with indipendent dimming option for each "channel" I'm still evaluating if would be better to have a AIO led driver or 4 dedicated, 1 for each channel - I think the last option would be more expensive but also more flexible in future.

    Could please explain why do you recommend PMP20946 against PMP4317? Just to undestand the Pros and Cons between the two solution.

    Thanks in advanced,
    Luca.

  • 0 in reply to Luca Ceccarelli
    TI__Mastermind 26445 points
    Hi Luca,

    PMP20946 uses UCC256301 LLC controller which has integrated gate drivers. PMP4317 uses an external gate driver + gate drive transformer. PMP20946 does not need an auxiliary supply to provide bias power on the primary side. PMP4317 uses UCC28610 as an aux supply to provide bias power on the primary and secondary.

    I would say PMP20946 will require fewer components and is a cheaper solution than PMP4317 but PMP4317 has more integrated features beneficial to lighting applications because UCC25710 has integrated PWM dimming. UCC25710 is also located on the secondary side and would make interfacing with the device for dimming purposes more manageable. The UCC256301 controller in PMP20946 is located on the primary side.

    Best Regards,
    Ben Lough