SPP105601

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AC DC Converters are rapidly becoming increasingly popular in today\'s world due to their ability to provide reliable and efficient power conversion from single or polyphase sources. The SPP105601 is a good example of this technology, as it has a wide range of applications and an impressive working principle.

Description & Applications

The SPP105601 is a broad-range buck-boost AC/DC converter, capable of producing a regulated output voltage from boards consisting of a single inductor, one active switch and one diode. It features a universal input voltage of 115-264VAC (45-65 Hz) and provides a single adjustable output voltage of 1.5V to 10V. This converter is highly efficient, producing a maximum efficiency of 95%, and is ideally suited for bulk PSUs, medical instruments, consumer electronics, and computer control applications.

This converter comes with very low noise, thanks to internal MOSFETs and efficient stabilized operation. It also has over current protection, short circuit protection and over voltage protection and supports soft-start and standby as well as normal run mode. The output voltage is actively regulated and maintained by the feedback loop, allowing for very accurate supply voltages.

Working Principle

The working principle behind the SPP105601 is simple but efficient. As mentioned before, the board consists of one active switch, one diode and one inductor. The switch is driven by a PWM signal, and this PWM signal is then rectified by the diode to produce the DC output voltage. The inductor is used to store energy or transposed energy when the switch is either opened or closed. The output voltage is regulated through the feedback loop, where it is compared to the reference voltage.

When the output voltage is greater than the reference voltage, the PWM signal is kept at a low frequency and the switch is opened for a longer time period, so that the current through the inductor is reduced. This reduces the output voltage to its reference value. On the other hand, when the output voltage is lower than the reference voltage, the PWM signal is increased in frequency and the switch stays opened for a shorter duration. This increases the current through the inductor, resulting in an increase of the output voltage to its reference value.

Conclusion

The SPP105601 AC/DC converter is a very effective and efficient device, with a wide range of applications, thanks to its broad input voltage range and adjustable output voltage. Its working principle is simple but effective, as it allows the output voltage to be actively regulated and maintained by a feedback loop. This makes it the perfect choice for various electronic and medical applications.

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