VI-243-IX

Current - Output (Max):	3.13A
Size / Dimension:	4.60" L x 2.40" W x 0.50" H (116.8mm x 61.0mm x 12.7mm)
Package / Case:	Full Brick
Mounting Type:	Through Hole
Efficiency:	90%
Operating Temperature:	-40°C ~ 85°C
Features:	OCP, OTP, OVP, SCP
Applications:	ITE (Commercial)
Voltage - Isolation:	3kV
Power (Watts):	75W
Series:	VI-200™
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	24V
Voltage - Input (Max):	100V
Voltage - Input (Min):	55V
Number of Outputs:	1
Type:	Isolated Module
Part Status:	Active
Packaging:	Bulk

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IntroductionDC DC converters are electronic devices that convert direct current (DC) from one voltage level to another. They are commonly used in applications where a source of DC power is not available or when the input voltage is too low to meet the desired output voltage. They are frequently used in industrial, automotive, medical and aerospace fields.The most commonly used DC-DC converters are buck, boost, flyback and buck-boost converters. The VI-243-IX converter is a specialized type of DC-DC converter known as a multi-input non-isolated buck regulator. It has a relatively low voltage input range of up to 24V, and a wide output voltage range of up to 243V.Application FieldThe VI-243-IX DC-DC converter is primarily used in aerospace and high-end industrial applications. These applications require a high degree of power accuracy and voltage stability. Therefore, standard DC-DC converters are not suitable for these kinds of applications.The VI-243-IX DC-DC converter is ideal for applications such as distributed power systems, requiring multiple power sources, or power bridging. Its wide input range and high output voltage, along with its low component count, make it an attractive solution for a wide range of applications.Working PrincipleThe VI-243-IX is a non-isolated buck regulator and operates on the principle of voltage regulation using an inductive-capacitive (LC) filter. It operates in three continuous modes; discontinuous, quasi-discontinuous and continuous conduction.In discontinuous mode, the inductor current flows for some period of time and stops. The voltage across the inductor is reset and the switch closes to create a continuous current. This mode is used when the load is light or when there is not enough input power available.In quasi-discontinuous mode, the inductor current follows the peak value of the input voltage. A current pulse is created with each switch closure, which adds to the total output current. This mode is used when there is a moderate load applied.In continuous conduction mode, the current maintains its value when the switch is closed. The current in the inductor buildsup over time until it reaches its peak value, then it gradually decreases as the input voltage drops. This mode is used when the load requires a large amount of current.ConclusionThe VI-243-IX is a specialized DC-DC converter designed for high voltage applications. It is a multi-input non-isolated buck regulator with a wide input range of up to 24V and a wide output voltage of up to 243V. It operates on the principle of voltage regulation using an inductive-capacitive (LC) filter, in discontinuous, quasi-discontinuous and continuous conduction modes. The VI-243-IX is an ideal solution for aerospace and high-end industrial applications, where accuracy and voltage stability are required.

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