MCP19115-E/MQ

MCP19115-E/MQ voltage regulator of the DC-DC switching controller is a monolithic device that offers high current and high temperature operation with the lowest output ripple. This regulator features a wide input voltage range and the on-board switching FETs are protected from potential short-circuits, making it ideal for industrial, automotive and power management applications.

The MCP19115-E/MQ DC-DC switching controller provides switch-mode regulation for single or multi-phase buck regulators, requiring an external sense resistor for current sensing. It includes an internal PWM oscillator, enable pin, integrated power MOSFETs and protection circuitry. It also offers a low inductance solution with the low surface-mount package.

The operation of the MCP19115-E/MQ DC-DC switching controller is based on the classic Step-Down (Buck) switching regulator topology. The output voltage is determined by the feedback voltage and reference voltage. An error signal is applied to the control circuit, which increases or decreases the duty cycle of the switch, thereby adjusting the output voltage. The output current is controlled by sensing the voltage drop across the external sense resistor. The sense resistor is then adjusted to achieve the desired output current.

The MCP19115-E/MQ DC-DC switching controller provides high efficiency, up to 95%, and can operate up to a temperature range of -20°C to +125°C. It features soft start, short-circuit protection, current limit and under-voltage lockout. The device also includes an integrated high-side and low-side MOSFET, providing a complete and flexible phase-dimming solution.

In summary, the MCP19115-E/MQ DC-DC switching controller is an ideal choice for high-current, high-temperature applications, offering a wide input voltage range, low output ripple, high efficiency, and excellent on-board protection. The device provides a low-inductance, efficient, and reliable solution for industrial, automotive and power management applications.