XR75100ELMTR-F产品概述
The XR75100 is a synchronous step-down controller for point-of load supplies up to 20 A. A wide 5 V to 40 V input voltage range allows for single supply operation from industry standard 12 V, 18 V, and 24 V DC and AC rails.
With a proprietary emulated current mode Constant On-Time (COT) control scheme, the XR75100 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 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 over-current, over-temperature, short-circuit and UVLO, help achieve safe operation under abnormal operating conditions.
The XR75100 is available in RoHS compliant, green/halogen free space-saving 16-pin 3 x 3 QFN package.
Specs and Features:
Features:
20 A Capable Step Down Controller:
Wide 5.5 V to 40 V Input Voltage Range
Integrated high Current 2 A/3 A Drivers
0.6 V Adjustable Output Voltage
Proprietary Constant On-Time Control:
No Loop Compensation Required
<0.01%/V Line Regulation
Ceramic Output Cap. Stable operation
Programmable 200 ns-2 μs on-time
Constant 100 kHz-800 kHz Frequency
Selectable CCM or CCM/DCM Operation
Programmable current limit:
110 ms Hiccup mode
Precision Enable and Power-Good Flag
Programmable Soft-start
Integrated Bootstrap diode
16-pin QFN Packages
Applications:
Networking and Communications
Fast Transient Point-of-Loads
Industrial and Medical Equipment
Embedded High Power FPGA
Automotive
