UWR-3.3/4250-D48ACT-C

Part Status:	Obsolete
Type:	Isolated Module
Number of Outputs:	1
Voltage - Input (Min):	36V
Voltage - Input (Max):	75V
Voltage - Output 1:	3.3V
Voltage - Output 2:	--
Voltage - Output 3:	--
Current - Output (Max):	4.25A
Power (Watts):	15W
Voltage - Isolation:	1.5kV
Applications:	ITE (Commercial)
Features:	--
Operating Temperature:	-40°C ~ 85°C
Efficiency:	85%
Mounting Type:	Through Hole
Package / Case:	6-DIP Module
Size / Dimension:	2.00" L x 1.00" W x 0.48" H (50.8mm x 25.4mm x 12.2mm)
Series:	UWR
Packaging:	Tube

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DC-DC converters typically offer improved system efficiency, since they minimize the power loss due to current flow through the converter circuitry. In this respect, the UWR-3.3/4250-D48ACT-C is a high-efficiency DC-DC converter that is designed to operate in harsh environments. This converter utilizes a unique high-frequency architecture, which enables it to deliver a high output-voltage range of 3.3VDC @ 4.2A.The UWR-3.3/4250-D48ACT-C is typically used in applications that require a steady and reliable power supply in remote or difficult-to-access areas. This is due to its wide temperature range of -25°C to +85°C and its exceptional immunity to surge and transient events. It also has a special EMI filtering feature that reduces electromagnetic interference and ensures quiet operation.The UWR-3.3/4250-D48ACT-C also features an innovative protection system that protects against over-current, under-voltage, and over-voltage conditions, ensuring that the unit will operate safely and reliably. In addition, the converter can be easily customized to meet specific application requirements.The working principle of the UWR-3.3/4250-D48ACT-C involves the conversion of an input voltage (typically from a 24VDC source) into a regulated output voltage (3.3VDC @ 4.2A) at a high frequency. This high-frequency architecture eliminates the need for large, bulky transformers which are often used in traditional DC-DC converters. Additionally, the high frequency operation significantly reduces the ripple and noise present at the output and therefore provides greater system stability. The converter uses a switching topology to boost the voltage from the input to the required output. The converter starts with a high frequency oscillator, which is then multiplied using frequency-doubling techniques to produce a signal with twice the original frequency. This signal is then filtered, rectified, and applied to the switching elements, comprising of MOSFET switches. During the switching cycle, the active elements (MOSFETs) are turned on when the input voltage reaches a certain threshold and the output voltage is regulated with the help of a feedback loop. When the MOSFETs switch off, the remaining energy stored in the inductor is recycled to the input terminal. This process is repeated to produce a steady output voltage.The UWR-3.3/4250-D48ACT-C also comes with a comprehensive set of features such as over-temperature protection, output-voltage adjustment, and remote sensing. The unit also has built-in protection against overcurrent, undervoltage lockout, and overvoltage. All of these features together make the UWR-3.3/4250-D48ACT-C highly reliable and efficient, making it an ideal solution for remote and harsh applications.

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