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DC/DC switching controller addresses active power apps

Posted: 12 Oct 2005 ?? ?Print Version ?Bookmark and Share

Keywords:on semiconductor? pulse width modulation controller? pwm controller?

ON Semiconductor announced that it has successfully developed a working silicon for its new dual-edge pulse width modulation (PWM) controller and delivery of engineering samples to leading VR11 power supply licensees.

"Customer feedback has been positive," said Bill Schromm, VP of ON Semi's High Performance Analog Products Group. "What we are hearing is that our new dual-edge PWM solution provides leadership cost versus performance trade-off points."

The company's new DC/DC switching controller specifically addresses 'active power' applications with highly regulated, low voltage power supplies that require high conversion efficiency to meet stringent VR11 specifications. "Our successful development of this DC/DC controller is expected to enable significant enhancements to the power subsystem for high performance CPU motherboards," commented Larry Sims, SVP and GM of Analog Products Group. "This product is scheduled to be released to market by the end of the year and will augment the company's existing portfolio of DDR controllers, general purpose controllers, MOSFETs and discrete products for computing applications."

Dual-edge technology

ON Semi's dual-edge PWM technology is touted to be the first in the industry for computing CPU power. Promising to deliver significantly faster response to load transients than existing industry solutions, this technique will enable the power management subsystem to respond to users' activation of high-performance computing functions. By enabling simultaneous switching of all phases in a multiphase power waveform, ON Semi's new solution provides faster response compared to the industry's standard single-edge control. This improved response enables the power management subsystem to operate at a lower frequency and with fewer hold-up capacitors, versus existing leading-edge or trailing-edge approaches, added the company.

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