AN1523 datasheet(4/24 Pages) STMICROELECTRONICS

Part #	AN1523

Description	11W FLYBACK CONVERTER FOR AUXILIARY POWER SUPPLY APPLICATION USING THE L6590

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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4 / 24 page

AN1523 APPLICATION NOTE

4/24

Figure 3. Vds @FULL LOAD&VinMAX

Figure 4. PIV @FULL LOAD&VinMAX

Vin = 265 Vrms - 50 Hz

CH1:

VPIN1 – DRAIN VOLTAGE

CH3:

+5V DIODE: ANODE VOLTAGE

CH4:

+12V DIODE: ANODE VOLTAGE

Figure 5. L6590 signals @FULL LOAD

Figure 6. L6590 signals @FULL LOAD

Vin = 115 Vrms - 50 Hz

Vin = 220 Vrms - 50 Hz

CH1:

VPIN1 – DRAIN VOLTAGE

CH1:

VPIN1 – DRAIN VOLTAGE

CH2:

VPIN4 –COMP

CH2:

VPIN4 – COMP

CH3:

VPIN3 – Vcc

CH3:

VPIN3 –Vcc

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