Various RT9248 free download

File name RT9248.PDF

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