RY-1209D/P

Series:	ECONOLINE RY
Packaging:	Tube
Part Status:	Active
Type:	Isolated Module
Number of Outputs:	2
Voltage - Input (Min):	11.4V
Voltage - Input (Max):	12.6V
Voltage - Output 1:	9V
Voltage - Output 2:	-9V
Voltage - Output 3:	--
Current - Output (Max):	55mA, 55mA
Power (Watts):	1W
Voltage - Isolation:	1kV
Applications:	ITE (Commercial)
Features:	SCP
Operating Temperature:	-40°C ~ 70°C
Efficiency:	60%
Mounting Type:	Through Hole
Package / Case:	7-SIP Module, 5 Leads
Size / Dimension:	0.77" L x 0.28" W x 0.40" H (19.7mm x 7.1mm x 10.2mm)

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DC DC Converters

DC-DC converters are an important part of the electrical and electronic system and are widely used in many applications. The RY-1209D/P is a type of DC-DC converter with various specifications. In this article, its application fields and working principle are discussed.

Application Fields

The RY-1209D/P from Mersen is a high-performance DC-DC converter specifically designed and optimized for industrial applications. It provides excellent input/output isolation, tight regulation, wide input ranges, and power levels up to 400W. It offers high efficiency and wide operating temperatures from -40°C to 85°C.The RY-1209D/P is a convection-cooled 3300VAC input/output isolation DC/DC converter. It can be used in various applications including communications, industrial control, power supplies, instrumentation, computers and other electronic systems. The device is available in 18-36 VDC input ranges with various output voltages, and a high input/output isolation capability up to 3300VAC. Its packaged form factor includes a standard quarter-brick plastic case and screw terminal heat sink mounting system with a standard input/output pad arrangement.

Working Principle

The RY-1209D/P DC-DC converter works on a simple principle. It employs a relatively simple circuit featuring an input filter, boost regulator, and a buck regulator. The input filter removes any electrical noise that may interfere with the supply voltage. The boost regulator pumps up the relatively low input voltage to a higher output voltage, which is then stepped down again by the buck regulator to the desired output voltage. To regulate the output voltage, the circuit employs a voltage divider with a precision feedback oscillator. In this case, the output voltage is compared to the reference voltage, which is generated by the voltage divider. The comparison is done by a control loop, which makes the output voltage equal to the reference voltage. The other important components of the RY-1209D/P are the diode rectifier bridge, the transformer, the filter inductors, the energy storage capacitor, current limiting resistors, and the output rectifier diode. The diode rectifier bridge provides full-wave rectification of the AC input, which is then stepped up by the transformer. The filter inductors and energy storage capacitor provide the necessary impedance to filter any noise. The current limiting resistors limit the output current, while the output rectifier diode ensures that the output voltage remains within specified limits.

Conclusion

This article discussed the application fields and working principle of the RY-1209D/P DC-DC converter. It is a high performance device specifically designed and optimized for industrial applications, offering excellent input/output isolation, tight regulation, wide input ranges, and power levels up to 400W. The device employs a relatively simple circuit featuring an input filter, boost regulator, and a buck regulator to regulate the output voltage. Additionally, other components such as the diode rectifier bridge, the transformer, the filter inductors, the energy storage capacitor, current limiting resistors, and the output rectifier diode are also included in the package.

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