Current - Output (Max):	125mA, 125mA
Control Features:	Enable, Active Low
Size / Dimension:	0.86" L x 0.36" W x 0.44" H (21.8mm x 9.2mm x 11.1mm)
Package / Case:	8-SIP Module, 7 Leads
Mounting Type:	Through Hole
Efficiency:	83%
Operating Temperature:	-40°C ~ 71°C
Features:	Remote On/Off, SCP
Applications:	ITE (Commercial), Medical
Voltage - Isolation:	3kV
Power (Watts):	3W
Series:	ECONOLINE RS3
Voltage - Output 3:	--
Voltage - Output 2:	-12V
Voltage - Output 1:	12V
Voltage - Input (Max):	72V
Voltage - Input (Min):	36V
Number of Outputs:	2
Type:	Isolated Module
Part Status:	Active
Packaging:	Tube

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DC DC Converters

The RS3-4812D/H3 is an example of a DC DC Converter that converts electrical power from one voltage level to a different voltage level, usually a higher one. It is an efficient electronic device that offers in a compact size a wide range of advanced features, to include short- circuit protection functions, as well as remote sensing and current limit capabilities.

Application Field

This type of DC DC converter is suitable for a variety of applications, such as in the home automation, cordless phones and remote control markets, as well as for power supply systems that require the conversion of 12VDC input voltage to 48VDC output. It is also well-suited for applications where it is required to increase the capacity of batteries, for instance in Telecommunication, Instrumentation and EMS applications.

Working Principle

The RS3-4812D/H3 works as a boost DC-DC Converter, which is a power supply unit that increases the input voltage typically from 12 to 24 Volts to a higher voltage. The input current is also equal to or lower than the output current. The conversion process is made using a switching regulator, which is an electronic circuit able to maintain a constant output voltage or current, regardless fluctuations in the input voltage.This DC DC converter is a non-isolated type, so the input and output are electrically connected, allowing better efficiency. Its internal converter uses Pulse Width Modulation control to generate a variable duty cycle, which is the ratio between the on-state time and the total period of the electrical pulse. This ratio is used to adjust the energy stored in the inductor, and its value is fed-back to the input of the converter from the output, allowing the system to establish a stable output voltage. The RS3-4812D/H3 also offers high efficiency, with a typical efficiency of more than 95%. It also features over-voltage protection, over-temperature protection and output current limiting. This ensures a reliable and precise conversion of the output voltage, while also screening the circuit from overloads, keeping it within operational limits.

Conclusion

The RS3-4812D/H3 DC DC converter is a great choice for applications that require a conversion of 12VDC input voltage to 48VDC output, mainly due to its high efficiency, over-voltage protection, over-temperature protection and output current limiting capabilities. Its robust design is suitable for a variety of applications and makes the device a reliable choice for many electronic projects.

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