Datasheet > XR79120

XR79120

更新时间： 2024-01-20 18:31:15

品牌	Logo	应用领域
艾科嘉 - EXAR		/
页数	文件大小	规格书
19页	2515K
描述
22V, 20A Synchronous Step Down COT Power Module

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XR79120 技术参数

是否Rohs认证：	符合	生命周期：	Active
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	2.16
Base Number Matches：	1

XR79120 数据手册

XR79120

22V, 20A Synchronous Step Down COT Power Module

FEATURES

General Description

 Controller, drivers, bootstrap diode and capaci-

tor, MOSFETs, Inductor, CIN and COUT integrated

The XR79120 is a 20A synchronous step-down Power Module for point-of

load supplies. A wide 4.5V to 22V input voltage range allows for single

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

in one package

 20A Step Down Module

 Wide 4.5V 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 XR79120 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 0.12% load and 0.17% 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 93% peak efficiency and 84% for loads as low as

100mA, the XR79120 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

 74-pin 12x14x4mm QFN package

The XR79120 is available in a RoHS compliant, green/halogen free

space-saving 74-pin 12x14x4mm QFN package. With integrated control-

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

COUT, this solution allows the smallest possible 20A 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

V_IN

1.820

1.815

VIN

PVIN

Enable/Mode

EN/MODE

PGOOD

1.810

1.805

1.800

1.795

1.790

1.785

1.780

V_OUT

Power Good

VOUT

C_IN

VCC

XR79120

R_LIM

C_FF

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/XR79120

Rev 1A

12 3 4 5 6 7...19

中文翻译

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与XR79120相关器件

型号	品牌	获取价格	描述	数据表
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
XR79206	EXAR	获取价格	40V, 6A Synchronous Step-Down
XR79206EL-F	EXAR	获取价格	Switching Regulator,
XR79206EVB	EXAR	获取价格	40V, 6A Synchronous Step-Down
XR7A0635-2	ETC	获取价格	CONNECTOR SMARTCARD 6WAY

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