Datasheet > RT8815A

RT8815A

更新时间： 2024-09-28 21:21:27

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
20页	282K
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技术参数
数据手册

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RT8815A 技术参数

Status：	Active	Vs (typ)(V)：	5
Vin (min)(V)：	5	Vin (max)(V)：	26
Vout (min)(V)：	0.3	Vout (max)(V)：	2
Preset Vout(V)：		Output Adj. Method：
Accuracy(+/- %)：		Freq (typ)(kHz)：
Freq (min)(kHz)：	150	Freq (max)(kHz)：	600
Iq (typ)(mA)：	1.5	Features：	Adjustable Frequency;COT Control;Diode Emulation Mode;OCP;OVP;Power Good;Selectable (PSM or PWM);UVP
Package Type：	WQFN3x3-20

RT8815A 数据手册

RT8815A

Dual-Phase PWM Controller with PWM-VID Reference

General Description

Features

^Dual-Phase PWM Controller

^Two Embedded MOSFET Drivers and Embedded

Switching Boot Diode

The RT8815A is a 2/1 phase synchronous Buck PWM

controller which is optimized for high performance graphic

microprocessor and computer applications. The IC

integrates a Constant-On-Time (COT) PWM controller, two

MOSFET drivers with internal bootstrap diodes, as well

as channel current balance and protection functions

including Over-Voltage Protection (OVP), Under-Voltage

Protection (UVP), current limit, and thermal shutdown into

the WQFN-20L 3x3 package.

^External Reference Input Control

^PWM-VID Dynamic Voltage Control

^Dynamic Phase Number Control

^Lossless R_DS(ON)Current Sensing for Current Balance

^Internal Soft-Start

^Adjustable Current Limit Threshold

^Adjustable Switching Frequency

^UVP/OVP Protection

The RT8815A adopts R_DS(ON)current sensing technique.

Current limit is accomplished through continuous inductor-

current-sense, while R_DS(ON)current sensing is used for

accurate channel current balance. Using the method of

current sampling utilizes the best advantages of each

technique.

^Shoot Through Protection and Short Pulse Free

Technology

 Support an Ultra-Low Output Voltage as Standby

Voltage

 Thermal Shutdown

The RT8815Afeatures external reference input and PWM-

VIDdynamic output voltage control, in which the feedback

voltage is regulated and tracks external input reference

voltage. Other features include adjustable switching

frequency, dynamic phase number control, internal soft-

start, power good indicator, and enable functions.

 Power Good Indicator

 RoHS Compliant and Halogen Free

Applications

 CPU/GPU Core Power Supply

 Notebook PC Memory Power Supply

 Chipset/RAM Power Supply

 GenericDC-DC Power Regulator

Simplified Application Circuit

RT8815A

PVCC

BOOT1

UGATE1

PHASE1

OUT

TON

LGATE

PGOOD

BOOT

UGATE2

PSI

VID

PHASE2

LGATE2

RGND

VSNS

GND_SNS

GND

OUT_SNS

is a registered trademark of Richtek Technology Corporation.

DS8815A-02 April 2019

www.richtek.com

12 3 4 5 6 7...20

中文翻译

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与RT8815A相关器件

型号	品牌	获取价格	描述	数据表
RT8816A	RICHTEK	获取价格	暂无描述
RT8816B	RICHTEK	获取价格	暂无描述
RT8816D	RICHTEK	获取价格	Dual-Phase PWM Controller with PWM-VID Reference
RT8820A	RICHTEK	获取价格	Dual-Phase PWM Controller with PWM-VID Reference
RT8841	RICHTEK	获取价格	4/3/2/1-Phase PWM Controller for High-Density Power Supply
RT8841A	RICHTEK	获取价格	暂无描述
RT8841GQW	RICHTEK	获取价格	IC CTRLR PWM MULTI-PHASE 40WQFN
RT8843C	RICHTEK	获取价格	Multi-Phase PWM Controller with PWM-VID Reference
RT8845A	RICHTEK	获取价格	暂无描述
RT8845B	RICHTEK	获取价格	暂无描述

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