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/Title (NCP81243 - Dual Output 3 and 2 Phase Controller with Single Intel Proprietary Interface for Desktop and Notebook CPU Applications)
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Acrobat Distiller 10.1.16 (Windows)
BroadVision, Inc.
2020-10-07T11:23:34+02:00
2017-06-08T09:45:13-07:00
2020-10-07T11:23:34+02:00
application/pdf
NCP81243 - Dual Output 3 and 2 Phase Controller with Single Intel Proprietary Interface for Desktop and Notebook CPU Applications
ON Semiconductor
The NCP81243 dual output three plus two phase buck solutions are
optimized for Intel®’s IMVP8 CPUs. The NCP81243 offer five PWM
drive signals that can be configured in multiple setups. The controller
combines true differential voltage sensing, differential inductor DCR
current sensing, input voltage feed−forward, and adaptive voltage
positioning to provide accurately regulated power for both desktop
and notebook applications.
The control system is based on Dual−Edge pulse−width modulation
(PWM) combined with DCR current sensing providing an ultra fast
initial response to dynamic load events and reduced system cost. The
NCP81243 provides the mechanism to shed phases during light load
operation and can auto frequency scale in light load conditions while
maintaining excellent transient performance.
Dual high performance operational error amplifiers are provided to
simplify compensation of the complete system. Patented Dynamic
Reference Injection further simplifies loop compensation by
eliminating the need to compromise between closed−loop transient
response and Dynamic VID performance. Patented Total Current
Summing provides highly accurate current monitoring for droop and
digital current monitoring.
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