VTM48EF012T130A00 Power Supplies - Board Mount

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DC-DC converters are electrical circuits that convert DC input voltages into tailored DC output voltages. One such popular and emerging product, VTM48EF012T130A00, is designed to be an isolated, fixed-frequency synchronous converter capable of providing a reliable output power of 12V@4A. It is also designed to have high efficiency levels to ensure the customization of applications, and broad thermals with slow thermal modulation.

Applications

The VTM48EF012T130A00 is designed to efficiently operate in a variety of applications with its wide input and output ranges: 36V~72V input and 12V@4A output. This converter is designed for applications in the industrial sector, by offering its users higher efficiency levels and expanded temperature ranges. VTM48EF012T130A00 is used in networking infrastructure, communications, and automotive applications. The unit also features high no-load power consumption to enable more efficient operations of the provided power.

Principle of Operation

The VTM48EF012T130A00 is designed with an isolated, fixed-frequency synchronous switch-mode converter, which is why it is an efficient option for applications mentioned above. Synchronous designs use two switches: an upper and a lower switch. The output voltage is adjusted by varying the width of the upper and lower switches. The signal from a regulating component tells the switches and how often they should switch, which effectively controls the ratio of the output voltage compared to the input voltage. Therefore, the output voltage will be the same as the input voltage.

The VTM48EF012T130A00 utilizes the active clamp circuit control technique. This technique operates by clamping the bottom and top switches during the operating cycles. The bottom switch is clamped when the current reaches the peak current limit, and the upper limit is clamped during the process of current recirculation. By clamping the switches, this method prevents the unit from showing a continuous overload of current from the input. This way, the device is protected from heat related issues and any other factors that could cause damage to the device.

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