Datasheet > RT8199B

RT8199B

更新时间： 2024-09-25 21:15:19

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
47页	727K
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技术参数
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RT8199B 技术参数

Status：	Active	VID Table Support：	VR12.1
Number of Phases：	1	Vcc (typ)(V)：	5
Vin (min)(V)：	5	Vin (max)(V)：	25
Accuracy (Vout>=1V)(+/- %)：	0.5	Freq (typ)(kHz)：	600
Built-in DAC Generator：	Yes	Number of MOSFET Drivers：	1
Features：	Enable Input;G-NAVP Control;OCP;OVP;Power Good;UVP	Package Type：	WQFN4x4-32

RT8199B 数据手册

RT8199B

Single-Phase Controller with Integrated Driver for VR12.1

Mobile CPU Core Power Supply

General Description

Features

^VR12.1 Compatible Power Management States

^Switching Frequency up to 1MHz

^Serial VID Interface

The RT8199B is a VR12.1 compliant CPU power controller

which includes one voltage rails : a 1 phase synchronous

buck controller, the CORE VR. The RT8199B has zero

load-line function to support zero load-line application. The

RT8199B adoptsG-NAVP^TM(GreenNativeAVP), which is

Richtek's proprietary topology derived from finiteDC gain

compensator with current mode control, making it an easy

to set the PWM controller, meeting all Intel CPU

requirements ofAVP (Active Voltage Positioning). Based

on theG-NAVP^TMtopology, the RT8199B also features a

quick response mechanism for optimizedAVP performance

during load transient. The RT8199B supports mode

transition function with various operating states. A Serial

VID (SVID) interface is built in the RT8199B to

communicate with Intel VR12.1 compliant CPU. The

RT8199B supports VID on-the-fly function with three

different slew rates : Fast, Slow and Decay. By utilizing

the G-NAVP^TMtopology, the operating frequency of the

RT8199B varies with VID, load and input voltage to further

enhance the efficiency even in CCM. The built-in high

accuracyDAC converts the SVIDcode ranging from 0.25V

to 1.52V with 5mV per step, as shown in Table 1. The

RT8199B integrates a high accuracy ADC for platform

setting functions, such as quick response or over current

level. The RT8199B provides VR ready output signals. It

also features complete fault protection functions including

Over Voltage (OV), Under Voltage (UV), Negative Voltage

(NV), Over Current (OC) and Under Voltage Lockout

(UVLO). The RT8199B is available in a WQFN-32L 4x4

small foot print package.

^Signal Phase PWM Controller

^G-NAVP^TMTopology

^0.5% DAC Accuracy

^Differential Remote Voltage Sensing

^Built-in ADC for Platform Programming

^System Thermal Compensated AVP

^Diode Emulation Mode at Light Load Condition

^Fast transient Response

 VR Ready Indicator

 Thermal Throttling

 Current Monitor Output

 Low Quiescent Power at PS3 and PS4

 OVP, UVP, OCP, UVLO, NVP

 Address Flip Function

 DVID Improvement

Applications

 VR12.1 Intel Core Supply

 Notebook CPU Core Supply

 AVP Step-Down Converter

Marking Information

3K= : Product Code

YMDNN : Date Code

3K=YM

DNN

Simplified Application Circuit

RT8199B

VR_READY

To PCH

UGATE

PHASE

LGATE

VR_HOT

VCLK

CORE

To CPU

VDIO

ALERT

is a registered trademark of Richtek Technology Corporation.

DS8199B-01 September 2015

www.richtek.com

12 3 4 5 6 7...47

中文翻译

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