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RT9246
Multi-Phase PWM Controller for CPU Core Power Supply
General Description
The RT9246 is a multi-phase buck DC/DC controller integrated with all control functions for GHz CPU VRM.
The RT9246 controls 2 or 3 buck switching stages operating in interleaved phase set automatically.
The multiphase architecture provides high output current while maintaining low power dissipation on power devices and low stress on input and output
capacitors.
The high equivalent operating frequency also reduces the component dimension and the output
voltage ripple in load transient.
RT9246 controls both
voltage and current loops to achieve good regulation, response & power stage thermal ba...