RT9241CS datasheet(1/13 Pages) ETC

部件名	RT9241CS

功能描述	Two-Phase DC/DC Controller for CPU Core Power Supply

PDF	13 Pages

Scroll/Zoom	100%

制造商	ETC [List of Unclassifed Manufacturers]

网页

标志

1 / 13 page

Preliminary

RT9241

DS9241-00 November 2001

www.richtek-ic.com.tw

1

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

General Description

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.

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.

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.

Ordering Information

RT9241

Features

Two-Phase Power Conversion

VRM 9.0 DAC Output with Active Droop

Compensation for Fast Load Transient

Precise

Channel

Current

Sharing

with

Differential Sense Input

Hiccup Mode Over Current Protection

Programmable Under Voltage Lockout and

Soft Start

High Ripple Frequency, (Channel Frequency

200KHz) Times Channel Number

Applications

Power Supply for Server and Workstation

Power Supply for High Current Microprocessor

Pin Configurations

Part Number

Pin Configurations

RT9241CS

(Plastic SOP-20)

TOP VIEW

Operating temperature range

C: Commercial standard

Package Type

S : SOP-20

1

2

3

4

5

6

7

8

9

10

13

14

15

16

17

18

19

20

12

11

VID3

VID2

VID1

VID0

COMP

FB

ADJ

VSEN

VID4

DVD

SS

VDD

PGOOD

ISP1

PWM1

PWM2

ISP2

ISN1

ISN2

GND

类似零件编号 - RT9241CS

制造商	部件名	数据表	功能描述
Richtek Technology Corp...	RT9241A	300Kb / 17P	Two-Phase DC/DC Controller for CPU Core Power Supply
	RT9241AGS	300Kb / 17P	Two-Phase DC/DC Controller for CPU Core Power Supply
	RT9241APS	300Kb / 17P	Two-Phase DC/DC Controller for CPU Core Power Supply
	RT9241BGS	300Kb / 17P	Two-Phase DC/DC Controller for CPU Core Power Supply
	RT9241BPS	300Kb / 17P	Two-Phase DC/DC Controller for CPU Core Power Supply

More results

类似说明 - RT9241CS

制造商	部件名	数据表	功能描述
List of Unclassifed Man...	RT9237	323Kb / 15P	MULTI-PHASE DC/DC CONTROLLER FOR CPU CORE POWER SUPPLY
Richtek Technology Corp...	RT9241A	300Kb / 17P	Two-Phase DC/DC Controller for CPU Core Power Supply
	RT9243	487Kb / 18P	Multi-Phase PWM Controller for CPU Core Power Supply
	RT9245	421Kb / 22P	Multi-Phase PWM Controller for CPU Core Power Supply
	RT9246A	281Kb / 16P	Multi-Phase PWM Controller for CPU Core Power Supply
	RT9248	325Kb / 14P	Multi-Phase PWM Controller for CPU Core Power Supply
	RT8856	373Kb / 23P	Multi-Phase PWM Controller for CPU Core Power Supply
	RT3607CE	959Kb / 69P	Multi-Phase PWM Controller for CPU Core Power Supply
	RT8859M	729Kb / 51P	Multi-Phase PWM Controller for CPU Core Power Supply
	RT8884C	692Kb / 46P	Multi-Phase PWM Controller for CPU Core Power Supply