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RT9224 - 5-Bit Programmable Synchronous PWM Buck Converter Controller and Output Voltage Monitor

Description

The RT9224 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 1.3V to 3.5V by a 5-bit DAC which provides initial accuracy of ±1%.

Features

  • Compatible with HIP6004B Simple Voltage-mode PWM Control with Buck Rectification ±1% DAC Output Voltage Accuracy 5-Bit Digital-to-Analog Output Voltage Range from 1.3 V to 3.5V Fast Transient Response and Excellent Output Voltage Regulation Fault Protection for Over-voltage and Over- Current Power-Good Output Voltage Monitor Fixed 200kHz Switching Frequency.

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Datasheet Details

Part number RT9224
Manufacturer Richtek Technology
File Size 194.98 KB
Description 5-Bit Programmable Synchronous PWM Buck Converter Controller and Output Voltage Monitor
Datasheet download datasheet RT9224 Datasheet
Additional preview pages of the RT9224 datasheet.

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Full PDF Text Transcription

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RT9224 5-Bit Programmable Synchronous PWM Buck Converter Controller and Output Voltage Monitor General Description The RT9224 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 1.3V to 3.5V by a 5-bit DAC which provides initial accuracy of ±1%. The RT9224 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 upper N-Channel MOSFET and provides an adjustable current limit without external sense resistor. RT9224 monitors the output voltage and provides the output signal for power-good and over-voltage protection.
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