Datasheet > RT8801BGQV

RT8801BGQV

更新时间： 2024-02-15 03:49:33

品牌	Logo	应用领域
立锜 - RICHTEK		多相元件控制器
页数	文件大小	规格书
23页	491K
描述
Multi-Phase PWM Controller for K8 CPU Core Power Supply with Serial Programming Interface

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RT8801BGQV 数据手册

Preliminary

RT8801B

Multi-Phase PWM Controller for K8 CPU Core Power

Supply with Serial Programming Interface

General Description

Features

z Multi-Phase Power Conversion with Automatic

The RT8801B is a multi-phase synchronous buck controller

which is implemented with full control functions for AMD

K8 compliant CPU. The RT8801B could be operated with

2, 3 or 4 buck switching stages operating in interleaved

phase set automatically. The multiphase architecture

provides high output current while maintaining low power

dissipation on power devices and low stress on input and

output capacitors.

Phase Selection

z 6-bits AMD K8 DAC Output with Active Droop

Compensation for Fast Load Transient

z Smooth V_CORETransition at VID Jump

z Power Stage Thermal Balance by DCR Current

Sense

z Hiccup Mode Over-Current Protection

z Adjustable Switching Frequency (50kHz to 400kHz

per Phase)

RT8801B is one of RichTek CPU core power solutions

which integrates a specific series programming interface

for the controller peration configuration. There are several

registers implemented for the specific parameters

configuration including VID for core power, and signal for

load current indication. User can program the configuration

of the parameters easily via the specific programming

interface. With the implementation of RT8801B, the part

provides more flexibility and feature for customers advanced

segment product design.

z Under-Voltage Lockout and Soft-Start

z High Ripple Frequency Times Channel Number

z 2-Wires Programming Interface

z Software Programmable VID

z 32-Lead VQFN Package

z RoHS Compliant and 100% Lead (Pb)-Free

Applications

z AMD K8 compliant Processors Voltage Regulator

z Low Output Voltage, High power density DC-DC

Converters

The RT8801B applies theDCR sensing technology newly

as well; with such a topology, the RT8801B extracts the

DCR of output inductor as sense component to deliver a

more precise load line regulation and better thermal

balance for next generation processor application. For

current sense setting, droop tuning, V_COREinitial offset

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 DAC output of RT8801B supports AMD CPU

with 6-bit VID input, precise initial value & smooth V_CORE

transient at VID jump. The IC monitors the V_COREvoltage

for 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. The RT8801B comes to the package of

VQFN-32L 5x5.

z Voltage Regulator Modules

Ordering Information

RT8801B

Package Type

QV : VQFN-32L 5x5 (V-Type)

Operating Temperature Range

P : Pb Free with Commercial Standard

G : Green (Halogen Free with Commer-

cial Standard)

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.

All brandname or trademark belong to their owner respectively

DS8801B-04 August 2007

www.richtek.com

12 3 4 5 6 7...23

中文翻译

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与RT8801BGQV相关器件

型号	品牌	获取价格	描述	数据表
RT8801BPQV	RICHTEK	获取价格	Multi-Phase PWM Controller for K8 CPU Core Power Supply with Serial Programming Interface
RT8801GQV	RICHTEK	获取价格	Multi-Phase PWM Controller for CPU Core Power Supply with Serial Programming Interface
RT8801PQV	RICHTEK	获取价格	Multi-Phase PWM Controller for CPU Core Power Supply with Serial Programming Interface
RT8802A	RICHTEK	获取价格	2/3/4/5-Phase PWM Controller for High-Density Power Supply
RT8802A_12	RICHTEK	获取价格	2/3/4/5-Phase PWM Controller for High-Density Power Supply
RT8802AGQV	RICHTEK	获取价格	2/3/4/5-Phase PWM Controller for High-Density Power Supply
RT8802APQV	RICHTEK	获取价格	2/3/4/5-Phase PWM Controller for High-Density Power Supply
RT8803A	RICHTEK	获取价格	2/3-Phase PWM Controller for High-Density Power Supply
RT8803A_11	RICHTEK	获取价格	2/3-Phase PWM Controller for High-Density Power Supply
RT8805	RICHTEK	获取价格	Two Phase General Purpose PWM Controller

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