MCP1631HV-500E/SS

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MCP1631HV-500E/SS is a DC-DC switching step-down controller from Microchip Technology, with low quiescent current of 500 nA and a wide input voltage from 4 to 35 V. This product is highly suitable for industrial, automotive, and medical applications that require a space and weight solution.

This controller family is designed to provide excellent efficiency over a wide range of load and input conditions. It also accepts power supply inputs that are much higher than the targeted output voltage, making it effective for high-voltage battery-powered systems. The MCP1631HV-500E/SS provides a wide range of protection features to ensure system reliability and safety. It also has the ability to measure and monitor the output current, input voltage, output voltage, and temperature.

Application fields

MCP1631HV-500E/SS can operate with a maximum power rating of up to 1.5W and is ideal for applications such as cellular base station power supplies, Ethernet switches, distributed power systems, servers, wireless sensor network energizers, smart meters and industrial automation systems, telecommunications, etc.

This family can also be used in distributed power systems, with excellent line and load regulation. It is also able to provide outputs in step-up and step-down modes to meet the needs of various applications. In addition, this controller family can be used for Point of Load (POL) applications, such as USB power port chargers, notebook computers, and battery powered equipment.

Working principle

The MCP1631HV-500E/SS device works on a pulse width modulation (PWM) control principle. The device senses the output voltage and adjusts the duty cycle of the PWM signal of the associated switch element. The frequency of the PWM signal is set by an external divider, or by internal switching. A separate feedback loop monitors the output and adjusts the duty cycle as necessary.

This product family also has built-in protection features, such as output over-voltage, short-circuit and thermal protection. An enable feature allows the user to adjust the high-side current limit to reduce power consumption and increase efficiency. Additionally, the device also has low-side current sensing and compensation.

The MCP1631HV-500E/SS is powered by an external voltage source, such as a battery, or a boost converter, and the output voltage can be adjusted with an external resistor divider. The device also features an adjustable over-temperature signal output, and two external control pins for system level power sequencing.

Conclusion

The MCP1631HV-500E/SS is a highly suitable DC-DC switching step-down controller from Microchip Technology for industrial, automotive, and medical applications which require a space and weight solution due to its low quiescent current of 500 nA and a wide input voltage from 4 to 35 V. It works on a PWM control principle, and has built-in protection features for system reliability and safety. This controller family can be used for distributed power systems, PoL applications, and more.

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