RP10-123.3SE-HC

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DC/DC converters are devices that convert a direct current (DC) voltage into a lower DC voltage, often through the use of a transformer. The RP10-123.3SE-HC is a DC/DC converter designed to provide a highly efficient solution in applications where high current is required, or where the power supply system needs to remain small and low in cost. This converter features low ripple and noise, fast transient response, and wide input voltage range.

The RP10-123.3SE-HC allows the output voltage to be adjusted from 0.5V to 4.8V with an external resistor divider or potentiometer. It is rated to deliver up to 20A of continuous output current. The device is protected against over temperature, over current, over voltage, and short circuit events, and has a peak efficiency of 89%, even at low load currents. Its no-load input current is 1.3mA, and it has a frequency range of 400kHz to 1MHz.

The working principle of the RP10-123.3SE-HC is based on the transformer-based topology, which creates a galvanically isolated voltage output. The transformer is powered by the input voltage, which is rectified by the bridge rectifier and filtered by the input electrolytic capacitor. The transformer’s primary winding is driven by a power transistor to produce a constant voltage. This voltage is then rectified and filtered by the output electrolytic capacitor to provide a regulated output.

The current limit of the RP10-123.3SE-HC is set by the chip-internal current limit circuit, which senses the voltage drop across the output of the device. When the limit is reached, the power transistor is switched off, limiting the output current. The current limit can be overridden by adding an external current limit to the power transistor.

The RP10-123.3SE-HC has a wide range of applications. Due to its wide input voltage range, it can be used in circuits operating on a variety of voltage sources. It is also suitable for power supplies that require isolation between the input and output stages such as medical equipment and audio systems. It can also be used in automotive systems, as the device is designed to operate over a wide temperature range and is compliant with the AEC-Q100 automotive qualification standard. Furthermore, it is also well suited to LED lighting systems, as its low ripple and wide adjustment range can be used to achieve dimming or color control.

The RP10-123.3SE-HC is a convenient and efficient way to provide a regulated output voltage from an input voltage source. Its low ripple and wide voltage and current range makes it well suited to a variety of applications, such as power supplies, automotive systems, audio equipment, LED lighting, and medical systems. The device’s transformer-based topology produces a galvanically isolated output voltage, allowing it to operate in circuits that require isolation between the input and output stages.

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