MCP1631-E/SS

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Modern DC-DC switching controllers provide reliability and enhanced power management features for a variety of applications. MCP1631-E/SS is an efficient low-cost DC-DC switching controller with many features that make it the ideal choice for a broad range of power-sensitive applications.

MCP1631-E/SS Application Field

The MCP1631-E/SS is a current-mode, low-side PWM (pulse width modulation) DC-DC switch controller with a wide input voltage range and two output voltages. It is designed to minimize current consumption as well as minimize external components while providing high efficiency. It provides a non-overlapped two-phase operation with precise current and voltage regulation, low-ripple voltage, and wide output voltage range. With its excellent efficiency and adjustable output voltage, it is ideal for multiple applications such as local regulated power supplies, battery-powered systems, DC-DC converters, and low-voltage battery chargers.

Working Principle of MCP1631-E/SS

The MCP1631-E/SS provides several features that enable system designers to optimize their designs for efficiency efficiency, size, and cost. It offers current-mode operation which provides better line and load transient response, as well as improved frequency stability.

The MCP1631-E/SS employs a dual-regulator architecture to provide both a constant-voltage regulator that establishes the output of the converter, and a constant-current regulator that sets the amount of current that can be drawn from the converter. This provides improved stability and protection against overloads and output current limitations. In addition, the MCP1631-E/SS has an adjustable maximum current limit, allowing it to safely deliver up to 2.6A at a maximum voltage of 28V.

The MCP1631-E/SS includes a built-in start-up circuit that acts as a soft-start controller. The start-up circuit ramps the voltage of the input voltage up to the desired value, then maintains the output current at a constant level to ensure minimal inrush current. It also features a 300kHz oscillator frequency that offers fast transient response.

In summary, the MCP1631-E/SS low-side PWM controller is a highly efficient and cost-effective DC-DC switching controller that provides many features and excellent performance in a variety of power-sensitive applications. With its adjustable output voltage, built-in start-up circuit, and current-mode operation, it is a great solution for local regulated power supplies, battery-powered systems, DC-DC converters, and low-voltage battery chargers.

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