REC7.5-4815SRW/H1/A/M/SMD/CTRL-R

Series:	ECONOLINE REC7.5
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Isolated Module
Number of Outputs:	1
Voltage - Input (Min):	36V
Voltage - Input (Max):	72V
Voltage - Output 1:	15V
Voltage - Output 2:	--
Voltage - Output 3:	--
Current - Output (Max):	500mA
Power (Watts):	8W
Voltage - Isolation:	1kV
Applications:	ITE (Commercial), Medical
Features:	Remote On/Off, SCP
Operating Temperature:	-40°C ~ 71°C
Efficiency:	86%
Mounting Type:	Surface Mount
Package / Case:	24-SMD Module, 18 Leads
Size / Dimension:	1.26" L x 0.78" W x 0.44" H (32.0mm x 19.9mm x 11.2mm)
Control Features:	Enable, Active Low

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DC-DC converters are wide utilized in modern electronic systems for efficient conversion of voltage level and current condition. One of the latest DC-DC converter is REC7.5-4815SRW/H1/A/M/SMD/CTRL-R which features excellent power factor corrector, high efficiency and power factor. In this paper, the application field and working principle of REC7.5-4815SRW/H1/A/M/SMD/CTRL-R will be discussed respectively.

Application Field

Due to its excellent performance of high power factor as well as high voltage and current conversion efficiency, REC7.5-4815SRW/H1/A/M/SMD/CTRL-R is not only suitable for high power electronics systems but also for a wide range of applications. It is an ideal choice for both industrial and domestic applications such as electronic vehicle, frequency converters, high current power supply and electrolytic capacitors, LED lighting, communication systems, uninterruptible power supply, medical equipment, PCs, and other power electronic systems.

Working Principle

The working principle of REC7.5-4815SRW/H1/A/M/SMD/CTRL-R is based on a synchronous buck converter topology with a step-down topology. The input voltage is firstly transformed into the intermediate-link voltage Vdc in order to support the output. It is then converted into an on-off pattern via Pulse Width Modulation (PWM) control, which is controlled by the PWM controller. A pair of external high side MOSFETs coupled with a pair of external low side MOSFETs constitute the main switch of the conversion process. The process achieves an efficient conversion of the input voltage to the desired output voltage, and in the meantime, maintains a constant output current condition. Moreover, REC7.5-4815SRW/H1/A/M/SMD/CTRL-R is equipped with a high-precision on-off controller, which possesses functions of 1% load regulation, 1% current regulation, 100kHz/200kHz frequency shifting, and programmable parameters specific to certain applications. During the conversion process, it can provide various output protection parameters such as over-voltage (OVP), under-voltage (UVP), physical output over-current (OCP) and output short-circuit protection (SCP) as well as other safety measures. To ensure steady long-term performance and reliability of REC7.5-4815SRW/H1/A/M/SMD/CTRL-R, it is designed with high temperature tolerant PCB layout and 10X creepage distance on the surface of PCB board. It is also designed with the advanced thermal design to dissipate the heat generated by the current and voltage fluctuation and electromagnetic radiation.

Conclusion

In conclusion, REC7.5-4815SRW/H1/A/M/SMD/CTRL-R is a highly efficient and reliable DC-DC converter, which can be employed in a wide range of industrial and electronic systems. It has excellent performance of high power factor as well as high voltage and current conversion efficiency, and owns various useful output protection parameters and advanced thermal design.

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