HPU1K5PS12-M

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AC-DC converters are electronic devices used to convert alternating current (AC) to direct current (DC). The HPU1K5PS12-M is a type of AC-DC converter, an isolated, low-power DC-DC converter with a universal input range and exceptionally low stand-by power. It offers ultra-wide-input range, maximum efficiency over the full load range without heat sinks, and excellent- transient response.

The HPU1K5PS12-M is designed to operate over a wide input voltage range of 90~305VAC. It is an ideal power solution for applications such as healthcare instrumentation, industrial automation, medical laser systems, smart home and wearable device designs.

Working Principle: The HPU1K5PS12-M converter uses an isolated synchronous buck converter topology to convert an input voltage, with a range of 90~305VAC, to a fixed DC-voltage output. To obtain the desired output voltage, the operating current of the converter is regulated with Pulse Width Modulation (PWM) over the input range. The PWM output is summed-up with an auxiliary output to deliver the required output voltage.

In addition, active Power Factor Correction (PFC) ensures the HPU1K5PS12-M meets current European regulations with an input power factor greater than 0.99. This feature ensures the converter efficiently burns undesired inrush current due to input capacitive loading, while avoiding potential damage to the power switch and downstream components.

The HPU1K5PS12-M also features an input filter and a reliable input protection circuit, protecting the unit from inrush currents, transients, and common-mode noise. Its wide input and output range, isolated galvanic insulation of 1kV, and the total absence of hysteresis in ON/OFF control circuits are key features making this converter highly desirable for designers.

The HPU1K5PS12-M also offers low operation temperature, despite its high efficiency. This is made possible by its tight tolerance and high-switching frequency on the main stage. The high switching frequency also enables the use of a low-ripple inductor and a small output filter, making the converter highly compact.

In the end, all of the above combines to form a converter that offers true more-power-than-needed performance and high reliability. This device is capable of continuously delivering 1.5W of output power without the necessity of adding any external heat sinks. Its advertised operating efficiency (max. 94%) and ultra-low standby power make it a perfect match for challenging, low-power, medical or industrial applications.

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