Monolithic Power Systems MP2910

Description

The MP2910 is a dual output with one synchronous buck PWM and one linear controller. The part is used to generate logicsupply voltages for PC based systems. MP2910 includes internal soft-start, frequencycompensationnetworks, 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 fixed300 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 settingexternal 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 overcurrent protection (OCP) is proposed to monitor the voltage drop across the RDS(ON) of the lowerMOSFET 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 AmplifierFull 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
• Available in a SOIC-14 Package and a SOIC8E Package.

Typical applications

• Graphic Card
• Motherboard
• High Power DC-DC Regulators
• Desktop Servers
• Telecomm Equipments

More information

• Datasheet
• IC product information