Datasheet > RT8115A

RT8115A

更新时间： 2024-09-23 15:50:03

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
18页	337K
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RT8115A 技术参数

Status：	Active	Vs (typ) (V)：	12;5
Vin (min) (V)：	2.5	Vin (max) (V)：	21
Vout (min) (V)：	0.8	Vout (max) (V)：	15
Preset Vout (V)：		Output Adj. Method：	Resistor
Accuracy (+/- %)：	0.875	Freq (typ) (kHz)：	300
Freq (min) (kHz)：		Freq (max) (kHz)：
Iq (typ) (mA)：	2	Features：	Diode Emulation Mode;OCP;OVP;PSM;Power Good;UVP;Ultrasonic Mode Control;Voltage Mode Control
Package Type：	WDFN3x3-10

RT8115A 数据手册

RT8115A

12V Green Voltage Mode High Efficiency Synchronous

Buck PWM Controller

General Description

Features

^zGreen Voltage Mode (GVM^TM) Control

The RT8115A is a high efficiency single phase

^zHigh Light Load Efficiency

synchronous Buck DC/DC controller with 5V/12V supply

voltage. The IC features Green Voltage Mode (GVM^TM

)

^zSingle 5V to 12V Driver Voltage

^zIntegrated High Driving Capability N-MOSFET Gate

Drivers

control, which is specifically designed to improve converter

efficiency at light load condition. At light load condition,

the IC automatically operates in the diode emulation mode

with constant on-time PFM to reduce switching frequency

so as to improve conversion efficiency.As the load current

increases, the RT8115Aleaves theDiode Emulation Mode

(DEM) and operates in the continuous conduction mode

with fixed frequency PWM.

^z300kHz Fixed Frequency Internal Oscillator

^z85% Maximum PWM Duty Cycle

^zPower Good Indicator

^zEnable/Disable Control

^zAdaptive Zero-Current Detection

^zInternal Soft-Start

z Lossless Low-Side MOSFET R_DS(ON)Current Sensing

for Over-Current Fault Monitoring

z LGATE Over-Current Setting (LGOCS)

z Dedicated Output Voltage Monitor

z OCP, UVP, OVP, OTP, UVLO

The RT8115A has embedded MOSFET gate driver with

high driving capability, supporting driving voltage up to 12V

for high output current application. This device uses

lossless low-side MOSFET R_DS(ON)current sense

technique for over-current protection with adjustable

threshold set by the LGATE pin (LGOCS). Other features

include power good indication, enable/disable control and

internal soft-start. The RT8115A also provides fault

protection functions to protect the power stage output.

With above functions, the IC provides customers a cost-

effective solution for high efficiency power conversion. The

RT8115A is available in the WDFN-10L 3x3 package.

z RoHs Compliant and Halogen Free

Applications

z Motherboard, Memory/Chip-set Power

z Graphic Card,GPU/Memory Core Power

z Low Voltage, High CurrentDC/DC Regulator

Simplified Application Circuit

RT811

BOOT

OUT

VCC

UGATE

PHASE

LGATE

PGOOD

COMP/EN

GND

is a registered trademark of Richtek Technology Corporation.

DS8115A-02 August 2013

www.richtek.com

12 3 4 5 6 7...18

中文翻译

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与RT8115A相关器件

型号	品牌	获取价格	描述	数据表
RT8115C	RICHTEK	获取价格	12V Green Voltage Mode High Efficiency Synchronous Buck PWM Controller
RT8120	RICHTEK	获取价格	Single-Phase Synchronous Buck PWM Controller
RT8120_V01	RICHTEK	获取价格	Single-Phase Synchronous Buck PWM Controller
RT8120A	RICHTEK	获取价格	Single-Phase Synchronous Buck PWM Controller
RT8120B	RICHTEK	获取价格	Single-Phase Synchronous Buck PWM Controller
RT8120C	RICHTEK	获取价格	Single-Phase Synchronous Buck PWM Controller
RT8120D	RICHTEK	获取价格	Single-Phase Synchronous Buck PWM Controller
RT8120E	RICHTEK	获取价格	暂无描述
RT8120F	RICHTEK	获取价格	暂无描述
RT8120G	RICHTEK	获取价格	暂无描述

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