TMR 3-1221WI

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DC-DC converter is one of the most important components of modern electronic systems and it has been widely used in a variety of industrial applications. Among all the DC-DC converters, switch mode DC-DC converters have become more and more popular because of their advantages such as high efficiency, fast dynamic response and good power density. In this article, we will take TMR 3-1221WI as an example to discuss its application field and working principle.

TMR 3-1221WI is a DC-DC converter built on the monolithic integration technology and it has a wide input voltage range of 3~16V and a wide output voltage range of 0.6~7.5V. It is applicable to a variety of applications such as industrial, medical and military fields. Its high efficiency and low heat dissipation help it reduce the risk of burning out and it is capable of responding to the output voltage changes quickly and stably even in the hostile environment.

Based on the Pulse-Width Modulation (PWM) control technique, The TMR 3-1221WI works in two steps. Firstly, through an inductor coil, it converts the input voltage to a continuous current and then passes it through a series switch to a secondary side. The secondary side then uses a LC or a capacitor network to further reduce the output voltage. Secondly, a linear regulator is used to output a stable voltage with low noise. In addition, this converter also utilizes the synchronous switch technique, which reduces the input current ripple and further improves the output voltage stability.

Besides the high efficiency and fast response, the TMR 3-1221WI also offers adjustable output voltage and current control via an external resistor, which helps the user to customize it to different application requirements. Furthermore, the advanced protection features, such as short circuit, over current, over voltage and over temperature protection, help protect the device from accidental damages.

In conclusion, TMR 3-1221WI is an integrated switch-mode DC-DC converter suitable for a variety of industrial and medical applications. Its wide input and output voltage range, high efficiency, fast response and advanced protection make it an ideal choice for most DC-DC conversion application.

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