MP158GS

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PMIC (power management integrated circuit) is a crucial component of any electronic device for efficient utilization of the power delivered by its power source. A wide range of integrated circuits are available in the market for this purpose, designed with various properties and attributes to suit various applications. One of the example of such an integrated circuit is MP158GS, a non-isolated AC/DC converter with offline switching ability, developed by Microchip.

The MP158GS is manufactured using planar and advanced field effect transistors (FETs), enabling it to perform at full load operation within a temperature range of -30°C to +85°C. It also features over-voltage, over-current and thermal protection, making it an ideal choice for applications such as home appliances, industrial applications and other similar environments.

The main application field of the MP158GS is to provide an operable AC/DC conversion system with non-isolated output switching capability. It is capable of supplying a power output of up to 8A at 25V, while providing a wide 4V to 25V input voltage range, which is adjustable by shifting the internal reference voltage. It is also a robust converter, capable of displaying a very low output ripple at a switching frequency of up to 50kHz.

The working principle of the MP158GS is based on a switched mode power supply (SMPS) architecture. It consists of an inverted buck converter and LDO (low dropout regulator) to provide the necessary output voltages. The internal FET switch and an inductor connected to the input voltage source form the inverted buck converter, which transforms the input voltage into a required DC output voltage. The LDO, on the other hand, is responsible for the necessary regulation of the DC output with an error signal produced by the control circuitry.

The MP158GS also provides various protection functions such as PWM Short Circuit Protection (PSCP), Automatic Peak Load Current Limiting (APLCL), Inrush Current Limit and Short Circuit Protection (SCL), as well as Thermal Shutdown Protection (TSP). It also offers dimming control, pulse width modulation (PWM) control, and the ability to regulate voltage or current depending on a feedback signal generated by the control circuitry.

The MP158GS is an ideal choice for any power conversion application that requires robustness and reliability. By integrating the SMPS architecture and a range of protection features into a single package, it enables users to design a power supply system with efficient, reliable and stable operations. Furthermore, the wide input voltage range, low ripple and output switching capabilities of the MP158GS makes it suitable for a variety of industrial and home applications.

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