Datasheet > XR79115

XR79115

更新时间： 2024-11-25 01:08:43

品牌	Logo	应用领域
艾科嘉 - EXAR		/
页数	文件大小	规格书
19页	2211K
描述
22V, 15A Synchronous Step Down COT Power Module

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XR79115 数据手册

XR79115

22V, 15A Synchronous Step Down COT Power Module

FEATURES

General Description

 Controller, drivers, bootstrap diode and capaci-

tor, MOSFETs, Inductor, CIN and COUT integrated

The XR79115 is a 15A synchronous step-down Power Module for point-of

load supplies. A wide 5V to 22V input voltage range allows for single sup-

ply operation from industry standard 5V, 12V, and 19.6V rails.

in one package

 15A Step Down Module

 Wide 5V to 22V Input Voltage Range

 >0.6V Adjustable Output Voltage

 Proprietary Constant On-Time Control

 No Loop Compensation Required

 Stable Ceramic Output Capacitor Operation

 Programmable 200ns to 2μs On-Time

 Constant 400kHz to 600kHz Frequency

 Selectable CCM or CCM/DCM

 CCM/DCM for high efficiency at light-load

 CCM for constant frequency at light-load

 Programmable Hiccup Current Limit with Ther-

mal Compensation

With a proprietary emulated current mode Constant On-Time (COT) con-

trol scheme, the XR79115 provides extremely fast line and load transient

response using ceramic output capacitors. It requires no loop compensa-

tion hence simplifying circuit implementation and reducing overall compo-

nent count. The control loop also provides 0.35% load and 0.1% 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. With a 96% peak efficiency and 90% for loads as low as

100mA, the XR79115 is suitable for applications where low power losses

are important.

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

short-circuit and UVLO, help achieve safe operation under abnormal

operating conditions.

 Precision Enable and Power Good flag

 Programmable Soft-start

 68-pin 12x12x4mm QFN package

The XR79115 is available in a RoHS compliant, green/halogen free

space-saving 68-pin 12x12x4mm QFN package. With integrated control-

ler, drivers, bootstrap diode and capacitor, MOSFETs, inductor, CIN and

COUT, this solution allows the smallest possible 15A POL design.

APPLICATIONS

 Networking and Communications

 Fast Transient Point-of-Loads

 Industrial and Medical Equipment

 Embedded High Power FPGA

Ordering Information – back page

Typical Application

Line Regulation

1.220

1.215

1.210

V_IN

VIN

PVIN

Enable/Mode

EN/MODE

PGOOD

V_OUT

Power Good

VOUT

1.205

1.200

1.195

1.190

1.185

1.180

C_IN

VCC

XR79115

R_LIM

ILIM

C_OUT

TON

C_VCC

C_SS

R_ON

AGND

PGND

10 12 14 16 18 20 22

V_IN(V)

1 / 19

exar.com/XR79115

Rev 1B

12 3 4 5 6 7...19

中文翻译

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与XR79115相关器件

型号	品牌	获取价格	描述	数据表
XR79115EL-F	EXAR	获取价格	22V, 15A Synchronous Step Down COT Power Module
XR79115ELTR-F	EXAR	获取价格	22V, 15A Synchronous Step Down COT Power Module
XR79115EVB	EXAR	获取价格	22V, 15A Synchronous Step Down COT Power Module
XR79120	EXAR	获取价格	22V, 20A Synchronous Step Down COT Power Module
XR79120EL-F	EXAR	获取价格	22V, 20A Synchronous Step Down COT Power Module
XR79120ELTR-F	EXAR	获取价格	22V, 20A Synchronous Step Down COT Power Module
XR79120EVB	EXAR	获取价格	22V, 20A Synchronous Step Down COT Power Module
XR79203	EXAR	获取价格	40V, 3A Synchronous Step-Down
XR79203EL-F	EXAR	获取价格	Switching Regulator,
XR79203EVB	EXAR	获取价格	40V, 3A Synchronous Step-Down

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