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RT9245A - Multi-Phase PWM Controller

Description

RT9245A is a multi-phase buck DC/DC controller integrated with all control functions for AMD K8 CPU or Intel ® GHz CPU which is VRD10.x-compliant.

The RT9245A could be operated with 2, 3 or 4 buck switching stages operating in interleaved phase set automatically.

Features

  • z Multi-Phase Power Conversion with Automatic Phase Selection 6-bits VRD10.x or 5-bit K8 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 z z z z z z z z Appli.

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Datasheet preview – RT9245A

Datasheet Details

Part number RT9245A
Manufacturer Richtek Technology
File Size 576.88 KB
Description Multi-Phase PWM Controller
Datasheet download datasheet RT9245A Datasheet
Additional preview pages of the RT9245A datasheet.

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Full PDF Text Transcription

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www.DataSheet4U.com RT9245A Multi-Phase PWM Controller for CPU Core Power Supply General Description RT9245A is a multi-phase buck DC/DC controller integrated with all control functions for AMD K8 CPU or Intel ® GHz CPU which is VRD10.x-compliant. The RT9245A 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. RT9245A implements both voltage and current loops to achieve good regulation, response and power stage thermal balance.
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