MCP1827S-1202E/AB

MCP1827S-1202E/AB Application Field and Working Principle

PMIC (Power Management IC) voltage regulators, such as the MCP1827S-1202E/AB, are used to regulate the output voltage of power electronics systems and ensure their stable operation. They are two-phase synchronous buck regulators with integrated MOSFETs, providing a low-cost power supply solution for applications requiring up to 2A output current. These regulators offer adjustable output voltage and enable a wide range of current and thermal protection features.

Application Fields

The MCP1827S-1202E/AB is suitable for a wide range of applications. It can be used in PCs, embedded applications such as those found in the industrial, medical, and communications industries, as well as power tools, automotive, and handheld devices. In addition, they can be used in LED lighting and voltage-controlled systems, such as those found in electronic power management applications.

Working Principle

The MCP1827S-1202E/AB is an integrated switching regulator, also known as a buck converter. It is a two-phase synchronous buck regulator in which the two integrated MOSFETs switching network operates in parallel for lower resistance and increased efficiency. This allows it to deliver up to 2A output current. The buck converter’s working principle is based on the parameters Vout, Iout, Fsw, and Duty Cycle.

The output voltage is determined by the output resistance (Rout), output current (Iout), and the output voltage of the regulator (Vout). The frequency of the switching operation (Fsw) is determined by the switching frequency parameter. And lastly, the duty cycle of the regulator is determined by the ratio of the amount of time the power supply is turned on, to the total switching period time.

The regulator’s output voltage is regulated by the internal synchronous regulator. This allows it to have an adjustable output voltage and an efficient current-mode operation. In addition, it offers overvoltage protection, thermal overload protection, soft-start, and short-circuit protection features.

Conclusion

The MCP1827S-1202E/AB is a two-phase synchronous buck regulator with integrated MOSFETs, providing a low-cost power supply solution for applications requiring up to 2A output current. It is suitable for a wide range of applications and offers adjustable output voltage and various current and thermal protections. Its working principle is based on the parameters Vout, Iout, Fsw, and Duty Cycle.