JTK2048S15

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DC-DC converters are electronic circuits that use solid-state parts to convert a source of direct-current (DC) electrical power from one voltage level to another. It is one of most commonly used power conversion techniques with widely applications in portable electronic devices, electric vehicles, renewable energy systems, aerospace and defense. JTK2048S15 is one of the most popular DC-DC converters recently released from JTEKT Corporation. This article introduces the application field and working principle of this device.

Applications

JTK2048S15 DC-DC Converter can be used in variety of power supply applications. By converting energy from DC to AC or from AC to DC form, it can be used in AC/DC converters, DC/DC converters, DC/AC converters and more. It is also capable of regulating output power and providing stable voltage.

Due to its features in high efficiency, low power dissipation, wide operating input voltage and output voltage ranges, JTK2048S15 is widely used in portable electronic devices. Besides, its excellent performance, including high isolation voltage, high ripple rejection and low noise, has enabled it to find applications in medical equipment, military and aerospace applications.

Working Principle

The JTK2048S15 is a low dropout (LDO) positive-input and positive-output based DC converter. Its design is based on the theory of buck and boost converters. The buck converter reduces the input voltage to a smaller desired output voltage of a certain load, while the boost converter increases the input voltage to a higher desired output voltage of the load.

The JTK2048S15 has both buck and boost functions, which can be used in two main modes of operation: step-down and step-up. In step-down mode, the converter reduces a higher input voltage to a lower voltage, suitable for the load’s needs. In step-up mode, it increases the input voltage to a higher output voltage, suitable for the load’s needs.

The converter has an internal switching power transistor to switch between step-down and step-up modes. It also includes an error amplifier and a control comparator to regulate the output voltage and maintain its accuracy. The control comparator senses the output voltage from a reference voltage to activate the transistor to either step up or down the input voltage to the desired output voltage. The error amplifier compares the actual output voltage to the reference voltage and compensates for any error to maintain the accuracy of the output voltage.

The JTK2048S15 provides the highest efficiency of 95%. It is based on the advanced circuit architecture, featuring high efficiency, wide input and output voltage ranges, low ripple and noise, high reliability, and improved EMI suppressing capacitors. The converter is also RoHS compliant, making it an ideal DC-DC converter for many portable electronic devices.

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