RP20-11012SFR/P

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DC DC converters are power supplies in which an unregulated input voltage is changed to an output voltage with a different magnitude. The RP20-11012SFR/P is an example of DC DC converter which is suitable for a broad range of applications such as space-constrained applications, telecom, medical, and industrial applications requiring safe and reliable power supply.

The RP20-11012SFR/P DC DC converter is a compact, topology featuring a synchronous rectifier power converter design. It offers high effciency and high output power density in a very small footprint. The product is designed to accept input voltages from 9 to 36 VDC and provides a 12 VDC regulated output.

The RP20-11012SFR/P employs various protection features to ensure reliability and longevity. These features include input under voltage, output over voltage, output short circuit protection, remote on/off control, chip temperature monitor, limit current, over temperature protection, and input reverse voltage protection.

The working principle of RP20-11012SFR/P starts by transforming the unregulated input voltage into a high frequency electrical signal. This high frequency electrical signal is then converted to the desired output voltage by the use of a switching converter. Moving parts such as transformers and inductors are replaced in the switching converter by insulated gate transistors, which control the actual switch operation.

The RP20-11012SFR/P utilizes a feedback circuit to ensure that the output voltage is precisely controlled. The feedback circuit collects data from the output voltage, such as the average output voltage (using a low-pass filter) and then adjusts the switching frequency accordingly. The feedback circuit also adjusts the duty cycle of the switches to keep the voltage ripple within a certain range, usually a few millivolts.

The converter uses a synchronous rectifier technique to reduce voltage losses in the switches. The synchronous rectifier is a switching device similar to a switching FET. The synchronous rectifier is enabled only when the output voltage is negative, and is disabled when the voltage is positive. This process greatly reduces the voltage losses in the switching transistor.

The RP20-11012SFR/P also utilizes a high frequency transformer to reduce electromagnetic interference and enable the required isolation between the input and output. The high frequency transformer also helps in reducing the thermal losses caused due to conduction. The device is further protected by fuses and transient voltage suppressors to protect against overcurrent conditions.

In conclusion, the RP20-11012SFR/P is a DC DC converter suitable for a wide range of applications. The device features a synchronous rectifier power converter design to offer high efficiency and power density. The working principle of the device involves transforming an unregulated input voltage into a high frequency signal, which is then converted to the desired output voltage by the use of a switching converter with insulated gate transistors. The device also features various protection features to ensure reliability and longevity.

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