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RT9245B - Multi-Phase PWM Controller

General Description

RT9245B is a multi-phase buck DC/DC controller integrated with all control functions for AMD K8 CPU.

The RT9245B could be operated with 2, 3 or 4 buck switching stages operating in interleaved phase set automatically.

Key Features

  • l l l l l l l l l Multi-Phase Power Conversion with Automatic Phase Selection 6-bit AMD K8 M2 DAC Output with Active Droop Compensation for Fast Load Transient Smooth VCORE Transition at VID Jump Power Stage Thermal Balance by DCR Current Sense Hiccup Mode Over-Current Protection Programmable Switching Frequency (50kHz to 400kHz per Phase), Under-Voltage Lockout and SoftStart High Ripple Frequency Times Channel Number 28-TSSOP Package RoHS Compliant and 100% Lead (Pb)-Free.

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Datasheet Details

Part number RT9245B
Manufacturer Richtek Technology
File Size 414.39 KB
Description Multi-Phase PWM Controller
Datasheet download datasheet RT9245B Datasheet

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Other Datasheets by Richtek Technology

Part Number Description
RT9245 Multi-Phase PWM Controller
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RT9241B Two-Phase DC/DC Controller

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www.DataSheet4U.com RT9245B Multi-Phase PWM Controller for K8 CPU Core Power Supply General Description RT9245B is a multi-phase buck DC/DC controller integrated with all control functions for AMD K8 CPU. The RT9245B could be operated with 2, 3 or 4 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. RT9245B implements both voltage and current loops to achieve good regulation, response and power stage thermal balance. RT9245B applies the DCR sensing technology newly.