AN4350 datasheet(4/34 Pages) STMICROELECTRONICS

Numer części	AN4350

Szczegółowy opis	High power factor LED driver with constant voltage regulation based on HVLED815PF

PDF	34 Pages

Scroll/Zoom	100%

Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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4 / 34 page

Features and specification

AN4350

4/34

DocID025181 Rev 1

Features and specification

The main features of the demonstration board are:



Output constant voltage (CV regulation)



High power factor - PF > 0.98



High efficiency - up to 88%



Primary side regulation - no optocoupler



Fully isolated output (flyback topology)



Tight output voltage regulation < ± 3%



Low total harmonic distortion - THD < 30%



Automatic self-supply (internal high voltage startup)



Minimum component count (internal Power MOSFET)

The main electrical specification requirements of the driver are summarized in the list:



Input voltage (VIN)

230 Vrms (200 - 265 Vac)



Output voltage (VOUT)

25 V



Output voltage ripple (

VOUTpk-pk)

< 3%



Maximum output current (IOUTMAX)

310 mA



Overcurrent protection (IOUTCC)

375 mA



Maximum output power (POUTMAX)

7.8 W



LED driver efficiency (

)

> 0.85%



Minimum switching frequency (FswMIN)

100 kHz



Reflected voltage (VR)

100 V

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