Dear Mr,
i have design an led driver 1A - 12V, to use it for our downlight, and it seems that the power is not stable shall i use an integrated circuit to limit the current?
best regards,
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I understand you have a 12V output at 1A, is that correct? But to help you best, or direct you to the right person could you please provide the following?
1. Input voltage source and range.
2. What IC and circuit are you using?
3. If AC-DC, is triac dimming required? Also if AC-DC do you have requirements for isolation, power factor, and EMI?
4. Do you need analog and/or PWM dimming?
If you can answer those I should be able to get you the help you need. Thanks.
Dear Mr.Clinton
understand you have a 12V output at 1A, is that correct? But to help you best, or direct you to the right person could you please provide the following?
yes right and the output is 12V-1A
1. Input voltage source and range.
the input is universall 80-265V
2. What IC and circuit are you using?
Could you help me by guiding me which IC is suitable for Driving led downlight / our cob has 3 strings in each strings there is 4 dies (Vf of dies = 2.8V to 3.3V)
3. If AC-DC, is triac dimming required? Also if AC-DC do you have requirements for isolation, power factor, and EMI?
No dimming required / PF >0.7 / Isolated
4. Do you need analog and/or PWM dimming?
No
If you can answer those I should be able to get you the help you need. Thanks.
Hello,
I would look at the TPS92210. Isolated off-line designs will require a transformer design. There are other options available also depending on what you would like your circuit to look like.
Thanks,