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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%.

Key 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

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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.