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RT9224E - VRM 8.5 Synchronous PWM Buck Converter Controller and Output Voltage Monitor

Datasheet Summary

Description

The RT9224E is a high speed switching controller designed for use in Synchronous DC/DC buck converter for modern CPUs.

The regulated output voltage is digitally programmable from 1.05V to 1.825V by a 5-bit DAC which provides initial accuracy of ±1%.

Features

  • Simple Voltage-Mode PWM Control with Buck Rectification ±1% DAC Output Voltage Accuracy 5-Bit Digital-to-Analog Output Voltage Range from 1.05V to 1.825V Fast Transient Response and Excellent Output Voltage Regulation Fault Protection for Over-Voltage and Over-Current Power-Good Output Voltage Monitor.

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Datasheet Details

Part number RT9224E
Manufacturer Richtek Technology
File Size 194.35 KB
Description VRM 8.5 Synchronous PWM Buck Converter Controller and Output Voltage Monitor
Datasheet download datasheet RT9224E Datasheet
Additional preview pages of the RT9224E datasheet.

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Full PDF Text Transcription

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Preliminary RT9224E VRM 8.5 Synchronous PWM Buck Converter Controller and Output Voltage Monitor General Description The RT9224E is a high speed switching controller designed for use in Synchronous DC/DC buck converter for modern CPUs. The regulated output voltage is digitally programmable from 1.05V to 1.825V by a 5-bit DAC which provides initial accuracy of ±1%. The RT9224E drives two external N-Channel MOSFETs, providing high efficiency and eliminating the need for high cost P-Channel devices. It senses the output current across the on-resistance of the N-channel MOSFET and provides an adjustable current limit without external sense resistor. RT9224E monitors the output voltage and provides the output signal for power-good and over-voltage protections.
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