How does a high voltage power supply work?

Modern high voltage power supplies employ power conversion topologies based on SMPS technology, to convert the low-frequency low voltage input to high voltages at the output. The principal idea of SMPS is to achieve this conversion utilizing high-frequency switches, such as MOSFETs, and a high-frequency transformer.

The high voltage power supply transforms the rectified and filtered DC bus voltages, gained by rectification of the mains input, to high-frequency AC with the help of high-frequency switches. These switches are usually switched above 20kHz and are controlled by varying the duty-ratio, to regulate the power transfer.

This high-frequency AC is further amplified to higher voltages by a high-frequency transformer. This transformer is the prime source of galvanic isolation. The stepped-up voltages are rectified, multiplied, and filtered at the secondary of the HF transformer to provide the desired voltage levels as the output.

Complex control circuitry is implemented in a high voltage power supply which enables the user to control the output as per the user demand. This circuit includes the fail-safe protection circuitry and the switching frequency drive to the switches.

Back to FAQ List

Subscribe to our mailing list

Please enter your details below to register for our news and product updates.

* indicates required