VTM48EH040T025B00

Current - Output (Max):	25A
Size / Dimension:	0.87" L x 0.65" W x 0.26" H (22.0mm x 16.5mm x 6.7mm)
Package / Case:	Module
Mounting Type:	Surface Mount
Efficiency:	93%
Operating Temperature:	-40°C ~ 125°C
Features:	Remote On/Off, OCP, OTP, OVP, SCP
Applications:	ITE (Commercial)
Voltage - Isolation:	2.25kV
Power (Watts):	83W
Series:	VI Chip® VTM®
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	3.3V
Voltage - Input (Max):	55V
Voltage - Input (Min):	26V
Number of Outputs:	1
Type:	Voltage Transformation Module
Part Status:	Active
Packaging:	Tray

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DC DC Converters

DC-DC converters are electronic circuits that convert direct current (DC) from one voltage level to another. In the VTM48EH040T025B00, the process happens in two stages: buck-boost and buck-rectification. The buck-boost stage monitors the input voltage from the power source and adjusts the output voltage accordingly. This is done by using transistors to modulate the voltage and current levels before passing them to the buck-rectification stage.

The buck-rectification stage adjusts the current into controlled pulses of output voltage by using more transistors. For the VTM48EH040T025B00, there are two different buck rectification configurations: synchronous and non-synchronous. The synchronous configuration is used for higher frequency applications and the non-synchronous configuration is used for lower frequency applications. The output voltage can be further adjusted by using pulse width modulation (PWM) principles. This adjustment is done by changing the duty cycle of the controlled pulses by varying the amounts of on and off time of the transistors.

DC-DC converters are commonly used in a variety of applications including power supplies, battery charging, and AC/DC inverters. The VTM48EH040T025B00 is typically used in battery powered applications to convert the low voltage of the battery to the higher voltage requiring applications. The VTM48EH040T025B00 can also be used to back-power larger converters when the power source is not available. This is done by connecting the load to the output of the VTM48EH040T025B00 while maintaining a secure connection to the input in order to pull power from the power source.

DC-DC converters are relatively small and efficient power supply systems that come in a variety of sizes and configurations to suit different applications. The VTM48EH040T025B00 is designed specifically for battery powered applications due to its high efficiency and adjustable output voltage features. Additionally, it is important to ensure the design of the VTM48EH040T025B00 allows the user to configure the system for their specific application requirements. Proper sizing of the components for the input voltage and output current requirements is also important to ensure safe and reliable operation.

In conclusion, the VTM48EH040T025B00 is an example of a DC-DC converter system used for battery powered applications. It can convert low voltage from the power source to higher voltage required by the target application. The two-stage buck-boost and buck rectification stages are important features used to increase the efficiency and accuracy of the output voltage of the converter. Properly sizing the components and configuring the system for the specific application are essential for a safe and reliable operation.

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