TEL 15-4822

The TEL 15-4822 is a DC-DC converter that is commonly used in a variety of applications. It is designed to convert input voltages between 12 and 48 AC/DC to a single output voltage ranging from 5 to 20 VDC. The TEL 15-4822 features an input current limit of 1.2A, a maximum output power of 15W, and a transient-free startup. It is also designed to protect against short circuit, overvoltage, and over-temperature.

The working principle of the TEL 15-4822 is relatively simple. It uses a combination of linear and switching elements to convert the input voltage into the desired output voltage. This is accomplished by using a rectifier to convert the AC/DC input voltage into DC, then an adjustable linear regulator to regulate the DC voltage, and finally a switching DC-DC converter to generate the desired output voltage.

The linear regulator portion of the converter uses a control loop to ensure that the output voltage is kept at the desired level. This is done by monitoring the output voltage and adjusting the control voltage accordingly. This voltage is then provided to the switching DC-DC converter.

The switching DC-DC converter is responsible for generating the desired output voltage by switching the input voltage on and off at a high frequency. The output voltage depends on the duty cycle of the switching cycle, meaning that the duty cycle can be adjusted to achieve the desired output voltage. This occurs because, when the input voltage is switched on, the input current charges an inductor, and when it is switched off, the stored energy in the inductor is released as an output voltage.

The TEL 15-4822 also includes a number of protective features to ensure that it operates safely and reliably. It features a current limit and overvoltage protection to protect against short circuits or excessive input voltages. It also has over-temperature protection which will shut down the converter if the temperature exceeds a certain threshold. Finally, it has a transient-free startup which ensures that the output voltage remains steady during startup.

In conclusion, the TEL 15-4822 is a versatile DC-DC converter that is suitable for a wide range of applications. It offers numerous protective features along with a reliable and efficient conversion process that makes it an ideal solution for custom power supplies.