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Power supply drives 60W peak power from a 40W design

03 Oct 2014

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Dialog Semiconductor plc has a new primary-side controller that provides 60W peak power mode from a 40W supply without the need to oversize the power supply design. According to the company, the iW1770 PrimAccurate controller enables compact, lightweight, high-power density adapters for Ultrabooks, network devices and other home electronics products.

Dialog's patent-pending peak power mode technology used in the controller offers peak power higher than the maximum continuous output power for a pre-determined period of time, eliminating the need to oversize the power supply transformer and output capacitors. This allows designers to produce higher power adapters that are the same size and cost as power supplies with a nominal rating of 40W.

With an average output power range of 15-40W and the ability to handle peaks up to 60W, the iW1770 also offers less than 50mW no-load standby power consumption, fast dynamic load response and high efficiency, according to Dialog. This allows power adapters to meet stringent global energy standards including the final 2014 U.S. DoE and European CoC version 5, tier 2 regulations.

The iW1770 includes a user-configurable, five-level cable drop compensation option to eliminate the ordering and inventory challenges of stocking multiple product versions for various output voltage needs. It comes in a standard, low-cost, 8-lead SOIC package and provides full protection from fault conditions, including output short-circuit, output over-voltage, output over-current and over-temperature protection.

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