Datasheet > XR76115

XR76115

更新时间： 2024-09-18 01:08:43

品牌	Logo	应用领域
艾科嘉 - EXAR		/
页数	文件大小	规格书
16页	2943K
描述
15A Synchronous Step Down COT Regulator

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XR76115 数据手册

XR76115

PowerBlox™

15A Synchronous Step Down COT Regulator

FEATURES

• 15A Capable Step Down Regulator

− 4.5V to 5.5V Low V_INOperation

General Description

The XR76115 is a synchronous step-down regulator combining

the controller, drivers, bootstrap diode and MOSFETs in a single

package for point-of-load supplies. The XR76115 has a load

current rating of 15A. A wide 5V to 22V input voltage range

allows for single supply operation from industry standard 5V, 12V

and 19.6V rails.

− 5V to 22V Wide Single Input Voltage

− ≥0.6V Adjustable Output Voltage

• Controller, drivers, bootstrap diode and

MOSFETs integrated in one package

• Proprietary Constant On-Time Control

− No Loop Compensation Required

− Ceramic Output Cap. Stable operation

− Programmable 200ns-2µs On-Time

− Quasi Constant 200kHz-800kHz Freq.

With a proprietary emulated current mode Constant On-Time

(COT) control scheme, the XR76115 provides extremely fast line

and load transient response using ceramic output capacitors. It

requires

loop

compensation,

simplifying

circuit

implementation and reducing overall component count. The

control loop also provides 0.25% load and 0.12% line regulation

and maintains constant operating frequency. A selectable power

saving mode, allows the user to operate in discontinuous mode

(DCM) at light current loads thereby significantly increasing the

converter efficiency.

− Selectable CCM or CCM/DCM

Operation

• Precision Enable and Power-Good Flag

• Programmable Soft-start

• 6x6mm 37-pin QFN Package

A host of protection features, including over-current, over-

temperature, short-circuit and UVLO, help achieve safe

operation under abnormal operating conditions.

APPLICATIONS

The XR76115 is available in a RoHS-compliant, green/halogen-

free space-saving QFN 6x6mm package.

• Distributed Power Architecture

• Point-of-Load Converters

• Power Supply Modules

• FPGA, DSP, and Processor Supplies

• Base Stations, Switches/Routers, and

Servers

Typical Application

1.220

1.215

1.210

1.205

1.200

1.195

1.190

1.185

1.180

V_IN(V)

Figure 2: XR76115 line regulation

Figure 1: XR76115 Application Diagram

www.exar.com

Rev 1B

12 3 4 5 6 7...16

中文翻译

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