XR79110中文资料22V, 10A Synchronous Step-Down Constant On-Time QFN Module数据手册MaxLinear规格书

描述 Description

The XR79110 is a synchronous step-down controller for Point-of Load (POL) supplies up to 10A. A wide 5.0V to 22V input voltage range allows for single supply operation from industry standard 5V, 12V and 19.6V rails.
With a proprietary emulated current mode Constant On-Time (COT) control scheme, the XR79110 provides extremely fast line and load transient response using ceramic output capacitors. It requires no loop compensation hence simplifying circuit implementation and reducing overall component count. The control loop also provides exceptional load and 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.
A host of protection features, including overcurrent, over temperature, short-circuit and UVLO, helps achieve safe operation under abnormal operating conditions.
The XR79110 is available in RoHS compliant, green/halogen free space saving 10 x 10mm QFN package.

特性 Features

·10A capable step-down module·Wide 5.0V to 22V input voltage range
·4.5V to 5.5V low VIN operation
·Integrated high current 2A/3A drivers
·≥0.6V adjustable output voltage

·Controller, drivers, bootstrap diode and capacitor, MOSFETs, inductor, CIN and COUT integrated in one package
·Proprietary Constant On-Time (COT) control·No loop compensation required
·Stable ceramic output capacitor operation
·Programmable 200ns to 2us on-time
·Constant 400kHz to 600kHz frequency
·Selectable CCM or CCM/DCM operation

·Programmable hiccup current limit with thermal compensation
·Precision enable and power-good flag
·Programmable soft-start
·10 x 10 x 4mm QFN package

应用 Application

·Networking and communications
·Point-of-Load (POL) supplies
·Industrial and medical equipment
·Embedded high power FPGAs
·Repeaters and base stations