XR79115中文资料22V, 15A Synchronous Step-Down Constant On-Time QFN Module数据手册MaxLinear规格书

描述 Description

The XR79115 is a synchronous step-down controller for Point-of Load (POL) supplies up to 15A. 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 XR79115 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, help achieve safe operation under abnormal operating conditions.
The XR79115 is available in RoHS compliant, green/halogen free space saving 12mm x 12mm QFN package.

特性 Features

·15A capable step-down module·Wide 5.0V to 22V input voltage range
·4.5V to 5.5V low VIN operation
·≥0.6V adjustable output voltage

·Controller, drivers, bootstrap diode and capacitor, MOSFETs, Inductor, CIN and COUT integrated in one package
·Proprietary constant on-time control·No loop compensation required
·Stable ceramic output capacitor operation
·Programmable 200ns to 2?s 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
·12mm x 12mm x 4mm QFN package

应用 Application

·Networking and communications
·Fast transient Point-of-Loads (POL)
·Industrial and medical equipment
·Embedded high power FPGA
·Repeaters and base stations datasheet