Service Manuals, User Guides, Schematic Diagrams or docs for : . Electronic Components Datasheets Various RT9248

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                                                        Preliminary                                   RT9248
Multi-Phase PWM Controller for CPU Core Power Supply
General Description                                               Features
The RT9248 is a multi-phase buck DC/DC controller                  Multi-Phase Power Conversion with Automatic
integrated with all control functions for GHz CPU VRM.             Phase Selection
The RT9248 controls 2 or 3 buck switching stages operating         VRM9 & VRD10 DAC Output with Active Droop
in interleaved phase set automatically. The multi-phase            Compensation for Fast Load Transient
architecture provides high output current while maintaining        Smooth VCORE Transition at VID Jump
low power dissipation on power devices and low stress on           Multi-Level VID125 Input for VRM9 & VRD10
input and output capacitors. The high equivalent operating         Selection
frequency also reduces the component dimension and the             Power Stage Thermal Balance by RDS(ON) Current
output voltage ripple in load transient.                           Sense
                                                                   Hiccup Mode Over-Current Protection
RT9248 controls both voltage and current loops to achieve
                                                                   Programmable Switching Frequency (50kHz to
good regulation, response & power stage thermal balance.
                                                                   400kHz per Phase), Under-Voltage Lockout and
Precise current loop using RDS(ON) as sense component
                                                                   Soft-Start
builds precise load line for strict VRM DC & transient
                                                                   High Ripple Frequency Times Channel Number
specification and also ensures thermal balance of different
                                                                   RoHS Compliant and 100% Lead (Pb)-Free
power stages. The settings of current sense, droop tuning,
VCORE initial offset and over current protection are
independent to compensation circuit of voltage loop. The
                                                                  Applications
feature greatly facilitates the flexibility of CPU power supply    Intel

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