REM3-4812SW/A

Current - Output (Max):	250mA
Size / Dimension:	1.25" L x 0.80" W x 0.40" H (31.8mm x 20.3mm x 10.2mm)
Package / Case:	24-DIP Module, 5 Leads
Mounting Type:	Through Hole
Efficiency:	87%
Operating Temperature:	-40°C ~ 105°C
Features:	Remote On/Off, OCP, OVP, SCP, UVLO
Applications:	ITE (Commercial), Medical
Voltage - Isolation:	5.0kV
Power (Watts):	3W
Series:	REM3
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	12V
Voltage - Input (Max):	75V
Voltage - Input (Min):	18V
Number of Outputs:	1
Type:	Isolated Module
Part Status:	Active
Packaging:	Tube

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DC DC Converters

DC (direct current) to DC converters are power-supplies based on a continuous exchange of energy. They accept a single DC input voltage and provide multiple regulated DC outputs. The REM3-4812SW/A is a DC-DC converter specifically designed for industrial and other technical applications. It falls under the range of DC-DC switch-mode power supplies, and features active current limitation and short-circuit protection, as well as stable performance for a wide input voltage range.

Application Field

The REM3-4812SW/A module is particularly suitable for applications in small telecommunications, factory equipment, industrial equipment, ruggedized computers, and automated test systems. It provides the system protection necessitated in such environments, meaning that it is extremely reliable and efficient in its power management operations. It is also extremely configurable, with a selectable current mode boost or buck operation, adjustable output voltage and temperature compensation, and provides the customer with the ability to tailor it specifically for different applications.

Working Principle

The REM3-4812SW/A utilizes a switch-mode power amplifier topology in a 4-phase PWM boost or buck configuration for efficient power transmission. It utilizes MOSFET transistors to send current pulses through the primary and secondary circuits of the DC-DC converter. This continuously adjusts input and output voltage levels to ensure that the output stays in the required range. PWM (pulse width modulation) is likewise used for tracking the source output. In addition to the adjustable output voltage, it also features active current limitation and external shutdown modes. These enable rapid shutdown during the occurrence of short-circuits or other unsafe conditions. The fail-safe inhibit mode turns off the converter if the output current reaches a preset point, thus preserving both the converter itself and the system. The REM3-4812SW/A operates over a wide temperature range (–25°C to +100°C) to meet the demands of the most extreme conditions.It also provides isolation in order to maintain radio frequency compatibility. In short, it is an ideal product for many industrial and telecommunications applications.

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