Datasheet > RT9241CS

RT9241CS

更新时间： 2025-08-18 22:50:27

品牌	Logo	应用领域
其他 - ETC		控制器
页数	文件大小	规格书
13页	269K
描述
Two-Phase DC/DC Controller for CPU Core Power Supply

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RT9241CS 数据手册

Preliminary

RT9241

Two-Phase DC/DC Controller for CPU Core Power Supply

Features

General Description

^zTwo-Phase Power Conversion

^zVRM 9.0 DAC Output with Active Droop

Compensation for Fast Load Transient

^zPrecise Channel Current Sharing with

Differential Sense Input

The RT9241 is a two-phase buck DC/DC controller

integrated with all control functions for high

performance processor VRM. The RT9241 drives 2

buck switching stages operating in 180 degree

phase shift. The two-phase 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.

^zHiccup Mode Over Current Protection

^zProgrammable Under Voltage Lockout and

Soft Start

^zHigh Ripple Frequency, (Channel Frequency

200KHz) Times Channel Number

Applications

^zPower Supply for Server and Workstation

RT9241 regulates both easily set voltage and

current loops. Precise current sharing for power

stage is achieved by differential input current sense

and processing circuit. The settings of current

sense, droop tuning and over current protection are

independent to compensation circuit of voltage loop.

The feature greatly facilitates the flexibility of CPU

power supply design and tuning.

^zPower Supply for High Current Microprocessor

Pin Configurations

Part Number

Pin Configurations

TOP VIEW

RT9241CS

(Plastic SOP-20)

VDD

VID4

VID3

PGOOD

18 ISP1

VID2

VID1

VID0

COMP

ADJ

DVD

The RT9241 uses a 5-bit DAC of 1.1V to 1.85V

(25mV/step) output with load current droop

compensation to meet the strict VRM transient

requirement. The IC monitors the VCORE voltage

for PGOOD and over voltage protection. Soft start,

over current protection and programmable under

voltage lockout are also provided to assure the

safety of microprocessor and power system.

PWM1

PWM2

ISP2

VSEN

GND

ISN1

ISN2

Ordering Information

RT9241ꢀ ꢀ

Package Type

S : SOP-20

Operating temperature range

C: Commercial standard

DS9241-00 November 2001

www.richtek-ic.com.tw

12 3 4 5 6 7...13

中文翻译

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