JTK2048D12

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Introduction

DC–DC converters are electronic components used to convert a DC input into a DC output of a different voltage. They can be used to control the output voltage of a power supply, or as a “DC–DC voltage amplifier.” The JTK2048D12 is one example of a DC–DC converter.

Application Field

The JTK2048D12 is a buck-boost DC–DC converter that can be used in a variety of applications. It is suitable for low-voltage automotive and industrial systems, as well as demanding intermediate applications such as lighting, telecom, and RF medical products.

As a switch-mode power supply, the JTK2048D12 can be used to convert an AC input to a DC output, or to convert a DC input to a DC output of a different voltage. It is also suitable for input voltage ranges from 5 V to 28 V, with an output voltage range from 0 V to 24 V.

The JTK2048D12 offers a continuously adjustable output voltage, up to 3 A for input voltage of 5 V to 24 V and up to 1.5 A for input voltage of 26 V to 28 V. It offers a high efficiency of up to 97.5 percent and a very low quiescent current of only 18 μA.

Working Principle

The JTK2048D12 utilizes a buck-boost topology, which means that the input power is switched between the input and the storage capacitor, depending on the load. When the input power is insufficient, the input voltage is boosted by the storage capacitor, while when the input power is too strong, it is bucked or reduced by the storage capacitor.

The JTK2048D12 also features a high-side N-Channel MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) to draw the stored energy from the storage capacitor for each switching cycle. This MOSFET also helps to reduce noise and EMI, which makes it a good choice for sensitive applications.

The JTK2048D12 has excellent ripple rejection, with a ripple of less than 0.5 percent of the output voltage. The high frequency of the switching cycle also reduces the size of the components while increasing reliability and operating temperature range.

Conclusion

The JTK2048D12 DC-DC converter is an excellent choice for applications that require a continuously adjustable output voltage and a high efficiency. Its buck-boost topology eliminates the need for extra components, while its high-side N-Channel MOSFET helps reduce noise and EMI. Its excellent ripple rejection and wide operating temperature range also makes it a good choice for high-efficiency and reliable applications.

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