ON Semiconductor (Nasdaq: ONNN), a global supplier of high performance,
energy efficient, silicon solutions, has introduced the industry’s
first six-phase Pulse Width Modulation (PWM) controllers. The ADP4000
and ADP4100 satisfy the demanding performance requirements of
Intel’s VR11.1 specification and enable energy
efficient motherboard and graphics card designs for servers and high-end
desktop computers.
The ADP4000 and ADP4100 utilize features of VR11.1, the
new desktop/server spec from Intel for 2008 desktop and server
platforms, to conserve power during light-loading in order to save
energy and generate less heat than earlier industry solutions. Dynamic
VID transitions adjust both the processor voltage and processor
frequency to switch between power/performance states. IMON (Current
Monitoring) is required by VR11.1 for power management features of the
processor.
The ADP4000 and ADP4100 possess various protection and
monitoring features. Current limit protection is available with delayed
latch-off function. This allows for inherent per-phase protection
against faulty components. Power Good monitoring is also present. High
pull-up indicates that the voltage is within normal limits.
The Fast Enhancement PWM (FEPWM) architecture is an improved version of
EPWM to achieve extremely fast turn-on during transients yet preserves
the clocking system for stability. FEPWM also maintains interleaving
between phases even during transients for input filter power dissipation
reduction. PWM clocking is still used for steady-state operation.
The ADP4000 includes a PMBus programmable digital interface that
allows designers to optimize compensation and control performance,
saving design-time and decreasing time to market. PMBus, which is based
on SMBus, is an open standard for communicating power information over a
digital interface. It is intended to work with all types of converters.
Several functions can be programmed over PMBus including output voltage
(VID code), output voltage offset for over-clocking, and current limit
thresholds. The ADP4000 supports 25 PMBus-defined commands and 38
manufacturer-specific commands.
“These industry leading, six-phase controllers
enable VR11.1 compliant designs in significant sectors of the worldwide
computing market,” said Bill Schromm, senior
vice president and general manager of ON Semiconductor’s
Computing Products Group. “When implemented
along with ON Semiconductor MOSFETs and MOSFET drivers, they deliver a
complete power management subsystem for the latest microprocessors while
also providing both power efficiency and board space benefits.”
The ADP4000 is available in a Pb-free, RoHS-compliant LFCSP-48
package, and is priced at $3.75 U.S. per unit in 2,500 unit quantities.
The ADP4100 is available in a Pb-free, RoHS-compliant LFCSP-48
package, and is priced at $3.45 U.S. per unit in 2,500 unit quantities.
With its global logistics network and strong product portfolio, ON
Semiconductor (Nasdaq: ONNN) is a preferred supplier of high
performance, energy efficient, silicon solutions to customers in the
power supply, automotive, communication, computer, consumer, medical,
industrial, mobile phone, and military/aerospace markets. The company’s
broad portfolio includes power, analog, DSP, mixed-signal, advance
logic, clock management, non-volatile memory and standard component
devices. Global corporate headquarters are located in Phoenix, Arizona.
The company operates a network of manufacturing facilities, sales
offices and design centers in key markets throughout North America,
Europe, and the Asia Pacific regions. For more information, visit http://www.onsemi.com.
ON Semiconductor and the ON Semiconductor logo are registered
trademarks of Semiconductor Components Industries, LLC. All other brand
and product names appearing in this document are registered trademarks
or trademarks of their respective holders. Although the company
references its website in this news release, such information on the
website is not to be incorporated herein.
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