Power Electronics

Off-line Green Mode Pulse Width Modulation Controller

Texas Instruments Incorporated introduced an off-line green mode pulse width modulation (PWM) controller that minimizes 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 percent at full load and high efficiency over the entire load range.

The UCC28610 uses 30 percent 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.

Key features
* 125-mW no-load power consumption is more than 200 percent better than current ENERGY STAR requirements
* Over current and overload protection eliminates overdesign, which helps reduce the power supply cost by as much as 30 percent when compared to the industry-standard power limit feature
* Cascoded MOSFET configuration 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 $0.44 in quantities of 1,000.

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