AN4376 datasheet(21/37 Pages) STMICROELECTRONICS

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AN4376 Scheda tecnica(PDF) 21 Page - STMicroelectronics

Il numero della parte	AN4376

Spiegazioni elettronici	10 W wide range non-isolated high power factor LED driver using HVLED815PF

PDF	37 Pages

Scroll/Zoom	100%

Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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21 / 37 page

DocID025380 Rev 1

21/37

AN4376

Measurement results

6.9

Total harmonic distortion (THD) at different LED load number

Figure 18 shows the total harmonic distortion (THD) versus the line.

Figure 18. THD versus AC line voltage at different LED load

THD at nominal input voltage (Japanese - European) is lower than 20% applying different

loads. Also the distortion of the PFC current is increasing, decreasing the number of LED.

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