SLKOR Protection and Stability in Boost Converters LM2577S-ADJ, Serving as a Switch Voltage Regulator

PublishTime： 2023-10-19 Article Source：SLKOR News

SLKOR has always been dedicated to the research and application of domestically developed substitute technologies and has achieved remarkable results. As early as 2015, SLKOR successfully achieved mass production of silicon carbide power devices, SiC MOS, and SiC SBD, providing excellent solutions for electric vehicles, hybrid vehicles, and other automotive electronic devices. In fact, the products of SLKOR have been widely used in the automotive industry, providing crucial power drive support for electric vehicles, hybrid vehicles, and more. SLKOR's products are applied in various fields such as high-power devices, electric heating elements, intelligent manufacturing, IC design and technology applications, LCOS new microdisplay chip design, chip packaging, and testing, demonstrating the continuous emergence of domestically developed substitute technologies. Throughout the process of researching and applying domestically developed substitute technologies, SLKOR has always adhered to the principles of innovation, leadership, and breakthroughs, striving to achieve even more outstanding achievements in the semiconductor field.

Fig.1

SLKOR is a high-tech enterprise specializing in integrated circuit design, research and development, sales, and services. Its product portfolio includes three major series of integrated circuits: diodes and transistors, power devices, and power management chips. Among them, the LM2577S-ADJ single-chip integrated circuit, as a star product of the company, is widely used in areas such as boost (step-up), flyback, and buck converters, serving as a switch voltage regulator.

Fig.2

The LM2577S-ADJ is a single-chip integrated circuit specifically designed for applications such as boost (step-up) converters, flyback and buck converters, and switch voltage regulators. This chip incorporates a 3.0A NPN switch along with related protection circuits, including current and thermal limiting, as well as undervoltage lockout. These protection mechanisms ensure that the chip is not affected by excessive current or temperature during operation, thereby improving its reliability and stability.

In addition to its protection features, the LM2577S-ADJ boasts other important characteristics. Firstly, it utilizes a 52kHz fixed-frequency oscillator that does not require external components. This reduces surge currents during start-up and provides a more stable output. Secondly, it includes a soft-start function that effectively reduces current spikes during start-up, thereby protecting other components in the circuit. Lastly, the LM2577S-ADJ employs current-mode control, which improves transient response to changes in input voltage and output load, offering a more sensitive and stable power supply control.

Fig.3

The advantages of the LM2577S-ADJ are not only reflected in its functional features but also in its wide range of applications. This chip can be used in simple boost regulators to convert low voltage to the desired high voltage. Additionally, it is suitable for flyback and buck regulators, providing stable power supply and control functions for electronic devices. Furthermore, due to the minimal requirement for external components, the LM2577S-ADJ is easy to install and use, making it suitable for various circuit designs and application scenarios.

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Integrated Circuits