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PWM controller handles 15W-65W output power

Posted: 30 Nov 2009     Print Version  Bookmark and Share

Keywords:PWM controller  pulse-width modulation  power supply 

Texas Instruments Inc. off-line green mode pulse width modulation (PWM) controller now minimises space and system cost while providing high efficiency in power supply applications.

The UCC28610's frequency and peak current modulation creates efficiency levels of 85 per cent at full load and high efficiency over the entire load range. The UCC28610 uses 30 per cent fewer external components than standard flyback controllers and is designed for applications with an output power range of 15W to 65W. Examples include AC/DC adapters, gaming, notebook and printer adaptors, LCD TVs and monitors, set top boxes, appliance power supplies, bias supplies or other supplies that need to meet ENERGY STAR efficiency standards or requirements under the Energy using Products (EuP) directive of the EU across the entire load range.

The controller features 125mW no-load power consumption, which is more than 200 per cent better than current ENERGY STAR requirements. The advanced over current and overload protection eliminates overdesign, which helps reduce the power supply cost by as much as 30 per cent when compared to the industry-standard power limit feature.

In addition, the device includes a Cascoded MOSFET configuration that enables better line surge raggedness than internal high-voltage FETs.

The UCC28610 is available now in an 8-pin SOIC package and is priced at Rs.21.48 ($0.44) in quantities of 1,000.





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