ON Semiconductor Introduces Fixed-Frequency Current-Mode Controller for High Efficiency, Compact Adapter SolutionsControllers Offer High Efficiency and Low Standby Power Consumption in Wide Range of AC-DC Adaptor Applications
APPLIED POWER ELECTRONICS CONFERENCE (APEC), PALM SPRINGS, Calif. - Booth # 315 – Feb. 22, 2010 – ON Semiconductor (Nasdaq: ONNN) a premier supplier of high performance, energy efficient silicon solutions for green electronics today announced the introduction of the NCP1237, NCP1238 and NCP1288 fixed-frequency, current-mode controller ICs. Targeted at AC-DC adapter applications for laptop/notebook computers, LCD displays, printers, and household consumer electronics, the new controllers are available in a choice of frequency options with single or dual level over current thresholds. The standard device has a built-in 65 kHz oscillator, with 100 kHz and 133 kHz versions supplied on request.
The Dynamic Self−Supply (DSS) function of the NCP1237 and NCP1238 provide an integrated start-up current source that intelligently handles start-up and line transient events. This simplifies the design of the auxiliary supply, reducing the size of the VCC capacitor. To minimize external component count, the controllers integrate brown-out, over-power compensation and ramp compensation, allowing a compact solution to be designed.
The new fixed-frequency, current-mode controller ICs have an operational temperature range of −40 °C to +125 °C and are offered in a compact SOIC-7 package.
“With utility bills continuing to increase and concerns about the environment growing, it is vital to use electrical power at the greatest possible rates of efficiency,” said Christophe Warin, AC-DC business unit manager at ON Semiconductor. “The NCP1237, NCP1238 and NCP1288 are highly integrated solutions that will allow engineers to develop power system designs that maintain strong reliability, have a low bill-of-materials and do not waste energy when the product is in standby mode.”
The NCP1237 controller will be featured in a live demo at the ON Semiconductor booth (#315) during APEC, which takes place Feb. 22-25, 2010 in Palm Springs, Calif.For more information, please visit https://www.onsemi.com.
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