Power Integrations (TOP242PN) AC/DC Off-Line Switcher IC, TOPSwitch-GX

AC/DC Off-Line Switcher IC, TOPSwitch-GX, Flyback, 85 VAC - 265 VAC, 132 kHz, 720 mA out, 15W, DIP-8 Product Overview The TOP242PN is a TOPSwitch-GX Integrated Off-line Switcher IC flyback supply provides 4 outputs, delivering 7W from a 230VAC ±15% input. Resistor R7 programs the internal TOP242PN current limit to 78% of nominal, just above the level needed for full load at low line. This feature allows a more continuous transformer design for better efficiency and cross-regulation, without requiring a larger core size. Resistor R12, C10 and L2 filter conducted EMI; R12 is a flameproof fusible type, also functioning as a fuse. For lower cost, if the supply does not have to meet conducted EMI with the output connected to earth ground, the common mode choke can be replaced with a π filter. A Zener clamp (D11 and VR1) was selected over an RCD clamp to minimize zero load consumption. <0.5W Input power at zero load Low component count design occupies 80 x 30 x 16mm Integrated soft-start reduces start-up component stresses Extended power range for higher power applications Eliminate or reduce cost of external components Externally programmable accurate current limit No turn off glitches line under-voltage (UV) detection Line over voltage (OV) shutdown extends line surge limit 132kHz Frequency reduces transformer/power supply size Hysteretic thermal shutdown for automatic fault recovery Large thermal hysteresis prevents PC board overheating Applications Power Management, Consumer Electronics Product Information Input Voltage AC Min: 85V Input Voltage AC Max: 265V AC / DC Converter Case Style: DIP No. of Pins: 8Pins Power Rating: 15W Topology: Flyback Operating Temperature Min: -40°C Operating Temperature Max: 150°C Product Range: TOPSwitch-GX Series