This board is designed as a discontinuous flyback regulator delivering 0.5A at 12V. The AC input is rectified and filtered by the bridge BR1, the bulk capacitor C1, and C2 to generate the high voltage DC bus applied to the primary winding (pins 8-10) of the transformer, TR1.

This engineering report describes a 5 W constant voltage/constant current (CV/CC) universal-input power supply for cell phone or similar charger applications. This reference design is based on the LinkSwitch-II family product LNK616PG.

Every year, millions of Watts are lost in heat from inefficient linear AC/DC wall adapters. This loss is incurred even when there is no load applied. The cause of this inefficiency is that energy is being lost from leakage elements found in the transformer and electrolytic capacitors.

This document is an engineering report describing a non-isolated buck-boost (inverting) power supply utilizing a LNK306P. This power supply is intended as a power supply for an appliance application.

This document is an engineering prototype report describing a 3.0 W power supply utilizing a LNK363P. This power supply is intended as a cell phone charger evaluation platform. Power Integrations E-shield technology of transformer construction allows this design to meet EMI requirement without using a common mode choke.

The iW1818-EVAL evaluation board implements a 10W power supply based on Dialog Semiconductor’s iW1818 AccuSwitch™ digital off-line power supply controller IC. The evaluation board supplies a 5V, 2A regulated output voltage using a primary-side controlled quasi-resonant flyback converter that meets the U.S. Department of Energy’s most recent level VI efficiency standard and the EU’s Code of Conduct, Version 5, Tier 2 standard or both active mode and no-load standby power consumption.

Interleaved PFC is an emerging solution that becomes particularly popular in applications where a strict form factor has to be met like for instance, in slim notebook adapters or in LCD TVs. Interleaving consists in paralleling two “small” stages in lieu of a bigger one, which may be more difficult to design.

The STEVAL-ISA196V1 evaluation board implements a flyback converter (5 V / 1.2 A) wide range mains developed for general purpose applications. The device is a high-voltage converter that intelligently integrates an 800 V rugged power MOSFET with PWM current-mode control.The main characteristics of the evaluation board are its single layer, small size and minimal BOM, high efficiency and low standby consumption.

The evaluation board shows a buck converter circuit using Power Integration's LNK6766E IC. The circuit provides a non-isolated 12 V, 2.5 A continuous output.

The BM2P016T-EVK-002 evaluation board outputs 15V voltage from the input of 90 ~ 264VAC. The output current supplies up to 1.5A. BM2P016T which is a PWM method DC/DC converter IC with built-in 650V MOSFET is used.