MP2910

Synchronous Buck PWM DC-DC

and Linear Power Controller

MP2910 Rev. 1.0

www.MonolithicPower.com

1

12/14/2011

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© 2011 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP2910 is a dual output with one

synchronous buck PWM and one linear

controller. The part is used to generate logic-

supply voltages for PC based systems. MP2910

includes

internal

soft-start,

frequency-

compensation networks, power good signaling

with specific sequence, and it comes all of the

logic

control,

output

adjustment,

power

monitoring and protection functions into a small

footprint package. The part is operated at fixed

300 kHz frequency providing an optimum

compromise

between

efficiency,

external

component size, and cost. The linear controller

is implemented to drive an external MOSFET

for regulation and it's adjustable by setting

external resistors. Moreover the specific internal

PG sequence and indicator is also implemented

to conform to Intel® new platform requirement

on FSB_VTT power plane. An adjustable over-

current protection (OCP) is proposed to monitor

MOSFET for synchronous buck PWM DC-DC

controller.

FEATURES

 Operating with 5V or 12V Supply Voltage

 Drives ALL Low Cost N-Channel MOSFETs

 Voltage Mode PWM Control

 300kHz Fixed Frequency Oscillator

 Fast Transient Response:

High speed GM Amplifier

Full 0 to 100% Duty Ratio

 Internal Soft-Start

 Adaptive Non-Overlapping Gate Driver

 Over-Current Fault Monitor on MOSFET, No

Current Sense Resistor Required

 Specific Power Good Indicator for Intel®

Grantsdale FSB_VTT Power Sequence

SOIC8E

Package.

APPLICATIONS

 Graphic Card

 Motherboard, Desktop Servers

 IA Equipments

 Telecomm Equipments

 High Power DC-DC Regulators

“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of

Monolithic Power Systems, Inc.