How to achieve high power factor for LED driver-EEWORLD

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The LED driver power solution using SA7527 has been mass-produced with stable quality.

advantage:

1) High power factor: above 0.95

2) Low harmonics: less than 15%

3) High efficiency

shortcoming:

1) The output ripple of the next stage is large, but it has no effect on the LED. If the customer requires, the next stage can adopt a DC TO DC solution.

2) The cost is slightly higher than that of power supplies with low power factor.

For this type of solution, our company recommends making products below 50W, with the output current controlled at around 2A.

120V power factor test data

220V power factor test data

Total harmonic test data

24V/350mA:

6LED - 10LED / 350MA:

24V/700mA:

24V/1.5A:

Keywords：LED Reference address：How to achieve high power factor for LED driver

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