Multi-Phase Buck Controllers support VR10.x/VR11 computers.
Press Release Summary:
Utilizing dual-edge pulse width modulation technology, Models NCP5387 and NCP5382 enable power management subsystems to efficiently respond to users' activation of high-performance computing functions. Units combine differential voltage and current sensing with adaptive voltage positioning. By enabling simultaneous switching of all phases in multiphase power waveform, controllers provide faster responses than single-edge or clocked control devices.
Original Press Release:
ON Semiconductor Expands Its Power Computing Product Offering with New Dual-Edge Multi-Phase Controllers
PHOENIX, Ariz. - April 5, 2007 -ON Semiconductor (Nasdaq: ONNN), a global supplier of efficient power management solutions, has expanded its power computing portfolio with the introduction of two new dual-edge multi-phase controllers. The NCP5387 and NCP5382 multi-phase buck controllers address power needs for servers and for VR10.x, VR.11.0 and Parallel VID based desktop personal computers. These devices join the NCP5391 and NCP5385 dual-edge control solutions the company introduced within the last year to enable more efficient and more compact Vcore power solutions to support VR10.x/VR11 desktop computers applications.
"We are pleased to expand our innovative dual-edge technology - and the corresponding efficiency and board space benefits - to additional sectors of the computing market," said Bill Schromm, senior vice president and general manager of ON Semiconductor's Computing Products Group. "Our dual-edge control technology is changing the way the industry approaches computing power supply design. The fact that our controllers improve power efficiency by up to three percent is a significant advancement that has been welcomed by our customers."
Utilizing the company's dual-edge Pulse Width Modulation (PWM) technology, the new devices deliver significantly faster response to load transients than existing industry solutions. As such, they enable power management subsystems to more quickly and more efficiently respond to users' activation of high-performance computing functions. Industry standard single-edge and clocked control devices in place today require operation at higher-than-optimal frequencies or use of substantial capacitive hold-up circuits. ON Semiconductor's dual-edge approach is less complicated to design-in, and enables a physically smaller power management subsystem than single-edge or clocked control devices can provide. By enabling simultaneous switching of all phases in a multiphase power waveform, ON Semiconductor's dual-edge PWM controllers also provide faster responses than single-edge or clocked control devices. This improved response enables the power management subsystem to operate at a lower frequency, with fewer hold-up capacitors than existing leading-edge or trailing-edge approaches.
The Devices
The new NCP5387 and NCP5382 are multi-phase buck controllers that combine differential voltage and current sensing, and adaptive voltage positioning. Dual-edge pulse width modulation, combined with inductor current sensing, reduces system cost by providing the fastest initial response to transient load events. Dual-edge multi-phase modulation reduces total bulk and ceramic output capacitance required to satisfy transient load line regulation. A high performance operational error amplifier is provided, which allows easy compensation of the system. The proprietary method of Dynamic Reference Injection makes the error amplifier compensation virtually independent of the system response to VID changes, eliminating tradeoffs between overshoot and dynamic VID performance
The NCP5387 is a two, three, or four phase controller, suitable for VR10.x, VR11.0, and Parallel VID desktop computing systems. The NCP5387 is available in a Pb-free QFN-40 package, and priced at $1.27 per unit in 2,500 unit quantities.
The NCP5382 is a four, five, or six phase controller, suitable for servers and other low-voltage, high-current power supplies. The NCP5382 is available in a Pb-free QFN-48 package, and priced at $1.75 per unit in 2,500-unit quantities.
For additional information visit www.onsemi.com or contact Michael Stapleton at michael.stapleton@onsemi.com.
About ON Semiconductor
With its global logistics network and strong portfolio of power semiconductor devices, ON Semiconductor (Nasdaq: ONNN) is a preferred supplier of power solutions to engineers, purchasing professionals, distributors and contract manufacturers in the power supply, computer, consumer, portable/wireless, automotive and industrial markets. For more information, please visit ON Semiconductor's website at www.onsemi.com.
CONTACTS
Anne Spitza
Marketing Communications
ON Semiconductor
(602) 244-6398
anne.spitza@onsemi.com
