AN4248 datasheet(6/46 Pages) STMICROELECTRONICS

Part #	AN4248

Description	60 W PSU design details for water purifier system

PDF	46 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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6 / 46 page

Electrical specifications

AN4248

6/46

DocID024214 Rev 1

Electrical specifications

Table 1. Electrical Specifications

Parameters

Limits

Min operating voltage, Vacmin

90 Vac

Max operating voltage, Vacmax

265 Vac

Mains overvoltage detection

Overvoltage shutdown above 300 Vac

Converter should withstand 440 Vac

Mains frequency, fL

50 Hz+/-3 Hz

Input / output isolation

Yes, galvanic isolation, > 2.7 KV

Nominal output voltage, Vout

24 V+/-0.2 V

Total output power, Pout

60 W

Typical efficiency at 230 Vac

> 85%

Output voltage pk-pk ripple

< 150 mV

Protection features

Mains brownout protection-auto restart

Mains overvoltage protection-auto restart/latched

Overload and short-circuit protection-auto restart

Output overvoltage protection-auto restart/latched

Over temperature shutdown-latched

Topology

Q-resonant flyback converter

Reflected voltage of transformer (VR)

140 V

Max ambient temperature

45° C

Enclosure type

Open

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