Datasheet > RT9241BGS

RT9241BGS

更新时间： 2024-09-24 04:32:55

品牌	Logo	应用领域
立锜 - RICHTEK		控制器
页数	文件大小	规格书
17页	301K
描述
Two-Phase DC/DC Controller for CPU Core Power Supply

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RT9241BGS 数据手册

RT9241A/B

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

General Description

Features

^zTwo-Phase Power Conversion

The RT9241A/B is a two-phase buck DC/DC controller

integrated with all control functions for high performance

processor VRM. The RT9241A/B 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.

^zVRM 9.0 DAC Output with Active Droop

Compensation for Fast Load Transient

^zPrecise Channel Current Sharing with Differential

Sense Input

^zHiccup Mode Over Current Protection

^zProgrammable Under Voltage Lockout and Soft

Start

^zHigh Ripple Frequency, (Channel Frequency Times

Channel Number)

^z100kHz Version (RT9241B) for Lower Switching Loss

^zRoHS Compliant and 100% Lead (Pb)-Free

RT9241A/B 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.

Applications

z Power Supply for Server and Workstation

z Power Supply for High Current Microprocessor

Pin Configurations

The RT9241A/B 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 V_COREvoltage for PGOODand 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.

(TOP VIEW)

VID4

VID3

VID2

VID1

VID0

COMP

VDD

PGOOD

ISP1

PWM1

PWM2

ISP2

VSEN

GND

ADJ

Ordering Information

RT9241A/B

DVD

ISN1

ISN2

Package Type

S : SOP-20

SOP-20

Operating Temperature Range

P : Pb Free with Commercial Standard

G : Green (Halogen Free with Commer-

cial Standard)

Operating Frequency Version

A : 200kHz

B : 100kHz

Note :

RichTek Pb-free and Green products are :

`RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

`Suitable for use in SnPb or Pb-free soldering processes.

`100%matte tin (Sn) plating.

DS9241AB-05 March 2007

www.richtek.com

12 3 4 5 6 7...17

中文翻译

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与RT9241BGS相关器件

型号	品牌	获取价格	描述	数据表
RT9241BPS	RICHTEK	获取价格	Two-Phase DC/DC Controller for CPU Core Power Supply
RT9241CS	ETC	获取价格	Two-Phase DC/DC Controller for CPU Core Power Supply
RT9243	RICHTEK	获取价格	Multi-Phase PWM Controller for CPU Core Power Supply
RT9243GS	RICHTEK	获取价格	Multi-Phase PWM Controller for CPU Core Power Supply
RT9243PS	RICHTEK	获取价格	Multi-Phase PWM Controller for CPU Core Power Supply
RT9244	RICHTEK	获取价格	Multi-Phase PWM Controller for CPU Core Power Supply
RT9244GS	RICHTEK	获取价格	Multi-Phase PWM Controller for CPU Core Power Supply
RT9244PS	RICHTEK	获取价格	Multi-Phase PWM Controller for CPU Core Power Supply
RT9245	RICHTEK	获取价格	Multi-Phase PWM Controller for CPU Core Power Supply
RT9245A	RICHTEK	获取价格	Multi-Phase PWM Controller for CPU Core Power Supply

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