[Richtek]

General Description

The RT9229 is a 4-in-one power controller optimized for high-performance microprocessor and computer applications. The IC integrates two PWM controllers, a linear regulator and a linear controller as well as monitoring and protection functions into a 28-pin SOP package. The first PWM controller regulates the microprocessor core voltage with a synchronous buck converter, while the second PWM controller supplies the 3.3V power with a standard buck converter. The linear regulator provides power for the clock driver circuit and the linear controller regulates

power for the GTL bus.

Features

4-in-one Regulated Voltages for Microprocessor Core, I/O, Clock, and GTL

Compatible with HIP6019B

Power-Good Output Voltage Monitor

Switching section

5-bit DAC Programmable from 1.3V to 3.5V

±1 DAC Accuracy

Fast Transient Response

Full 0 to 100 Duty Cycle Driver

Fixed 200kHz Switching Frequency

Adaptive Non-overlapping Gate Driver

Over-current Monitor Uses MOSFET RDS(ON)

Over-voltage Protection Uses Lower MOSFET

Linear Section

User-adjustable Linear Regulator Output Voltage

MOSFET or NPN Driving Capability

Ultra Fast Response Speed

Under-voltage Protection

Internal Thermal Shutdown

Applications

Full Motherboard Power Regulation for Computer

Low-voltage Distributed Power Supplies