UCQ-5/20-D48NB-C Power Supplies - Board Mount

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DC-DC converters are widely used in industrial applications, telecommunications, and renewable energy industries, to convert electric power between two different voltages. The UCQ-5/20-D48NB-C is a type of high-performance, regulated, isolated power supply built for rugged applications. It has exceptional transient response, wide input voltage range, and extremely high power densities. This article will discuss the application field and working principle of the UCQ-5/20-D48NB-C.

The high efficiency of the UCQ-5/20-D48NB-C makes it ideal for use in applications that require maximum power density in a high-performance context. Its wide input voltage range of 4.5 to 20 volts enables reliable conversion of high frequency AC power to DC, making it suitable for applications in telecom, industrial control, and other applications. The advanced synchronous rectification feature enhances the switching frequency to reduce power dissipation, while the Control Switching outputs provide precise load protection.

The UCQ-5/20-D48NB-C is able to provide galvanic isolation from line-to-load and line-to-ground. It also offers a wide range of protection features such as over-voltage, over-current, short circuit, and thermal overload protection. This makes it an excellent choice for applications in which reliability and safety are paramount.

The output voltage is adjustable from 0.7V up to 5V, and the output power is up to 6 Watts with no minimum load requirement. The output ripple and noise are also extremely low, making it suitable for use in high noise scenarios. The wide input voltage range makes the UCQ-5/20-D48NB-C an ideal choice for use in both isolated and non-isolated systems.

The working principle of the UCQ-5/20-D48NB-C involves two stages. The first stage is the high-efficiency but low-power switching stage, which converts the input voltage to a higher DC voltage. The second stage is the conversion stage, which takes the DC voltage output from the first stage, and converts it to the desired output voltage.

In the first stage, a pair of low-power insulated gate bi-polar transistors are used. These transistors switch the currents rapidly that are needed to create the output voltage. The AC line voltage is converted to DC by rectifying the mains AC voltage. The output voltage from the first stage is then filtered, to smooth out any ripples that may have been induced by the rectification process.

In the second stage, a low-power, high-efficiency step-down converter is used to convert the DC voltage output from the first stage to a regulated DC output voltage. During this stage, an inductive component is used to store and release energy in proportion to the current load resistance. When energy is released, it is then converted to AC, and reconverted to DC, thus regulating the output voltage. This process makes the UCQ-5/20-D48NB-C highly efficient, and capable of providing a constant output voltage and current.

In conclusion, the UCQ-5/20-D48NB-C is an extremely efficient, high-performance, regulated, isolated power supply built for rugged applications. It is able to convert a wide input voltage range, and offers a wide range of protection features, including galvanic isolation, over-voltage, over-current, short circuit, and thermal overload protection. The advanced synchronous rectification feature enhances the switching frequency, and the Control Switching outputs provide precise load protection. Its two-stage working principle ensures a highly efficient and regulated output voltage.

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