MDD02N-12

Current - Output (Max):	83mA, 83mA
Supplier Device Package:	7-SIP
Size / Dimension:	0.77" L x 0.39" W x 0.49" H (19.5mm x 9.8mm x 12.5mm)
Package / Case:	7-SIP Module, 5 Leads
Mounting Type:	Through Hole
Efficiency:	82%
Operating Temperature:	-40°C ~ 85°C
Features:	SCP
Applications:	Medical
Voltage - Isolation:	6000V
Power (Watts):	2W
Series:	MDD02
Voltage - Output 4:	--
Voltage - Output 3:	--
Voltage - Output 2:	-12V
Voltage - Output 1:	12V
Voltage - Input (Max):	26.4V
Voltage - Input (Min):	21.6V
Number of Outputs:	2
Type:	Isolated Module
Part Status:	Active
Packaging:	Tube

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DC-DC Converters

DC-DC converters are electronic components that convert direct current (DC) of one source voltage to a different source voltage. They come in various forms with different output voltages and power ratings, enabling them to be used in a innumerable array of applications. One type of DC-DC converter is the MDD02N-12, a high efficiency, low noise and low cost DC-DC converter. This paper will discuss the application field and working principle of the MDD02N-12.

Application Field

The MDD02N-12 can be used in a variety of applications from industrial to communication and automotive. Thanks to its quiet operation, low cost and a high efficiency of up to 89%, the MDD02N-12 is an ideal choice for powering electronics equipment, such as instrumentation, datacom and medical equipment. Its power isolation ensures a reliable power conversion, while its wide range of input and output voltages (2-13V, 5-20V,12-24V) and high peak current capability (up to 10A) makes it suitable for industrial controls. Furthermore, the MDD02N-12’s high temperature operation (up to 70 °C) makes it ideal for automotive applications such as engine control units and lighting systems.

Working Principle

The MDD02N-12 is a type of DC-to-DC converter employing buck-boost topology to achieve its current conversion. A buck-boost converter can be likened to an auto-transformer, wherein the input voltage is chopped by an internal switch and the output voltage is regulated by adjusting the chopping frequency. In the buck-boost converter, the voltage is regulated depending on the load and these changes are overseen by a control circuit. The control circuit maintains a closed loop system by comparing the output voltage to the reference voltage and then adjusting the chopping frequency accordingly. The MDD02N-12 also features an overcurrent protection circuit, which will shut off the power immediately when the output current is greater than 10A. This increases the safety of the device and also prevents any damage that may occur if the output current exceeds the rated capacity.

Conclusion

The MDD02N-12 is a cost effective and efficient DC-DC converter suitable for a wide range of applications and is easy to operate. With its high power efficiency and low noise operation, the MDD02N-12 is an ideal choice for powering instrumentation, datacom, medical equipment and automotive equipment. Furthermore, its overcurrent protection circuit increases the safety of the device and prevents any damage that may occur if the output current exceeds the rated capacity.

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