MCP1653R-E/UN

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The MCP1653R-E/UN is a DC DC switching controller that can be used in applications ranging from isolated, synchronous step-down (buck) to non-isolated, non-synchronous step-up (boost). The regulator optimizes efficiency and reduces board space by integrating functions normally only found in multiple devices. The device is designed to generate a control signal to control external MOSFETs to provide a regulated output voltage.

Overview

The MCP1653R-E/UN is a DC DC switching controller that can be used for step-down (buck) or step-up (boost) applications. It is offered with a wide operating input voltage range of 8 V to 60 V, and can also operate from a single Li-Ion cell, offering an elegant solution for powering applications from a single Lithium-Ion battery. The controller integrates precise current-mode control, allowing designers to achieve fast transient response and improved line and load regulation.

The output ripple is also minimized with the accompanying low on-resistance external MOSFETs, and the side by side device allows for easy design constraints. The device is available in 8-pin and 10-pin packages, offering space savings for the designer with external components.

Benefits and Applications

The MCP1653R-E/UN is extremely power efficient and provides a regulated voltage, reducing board space and component costs. It can be used in applications such as DC-DC converters, power supplies, and power management systems. It is ideal for automotive, industrial, consumer and medical applications.

It can be used in applications that require high power conversion efficiency, high-density circuit layouts, and low component costs. Its capabilities to regulate both output voltage and output current levels optimally make it suitable for applications where the output voltage needs to be maintained in order to optimize the performance of the system. Furthermore, the device offers great flexibility when it comes to adjusting output voltage levels.

Working Principle

The MCP1653R-E/UN is a venerable silicon CMOS-based DC DC converter operating with a voltage-mode control architecture. It is specifically designed to provide a low-cost solution for power conversion between the battery and the circuit board. The device uses a voltage reference and current senseinput to modulate the output voltage by switching the FETs on or off.

It works on the principle of switching the FETs on and off at a predetermined frequency. A feedback loop is used to ensure that the output voltage remains within a predetermined range. The voltage-mode architecture used in DC-DC converters helps to reduce electromagnetic interference (EMI) and peak current related problems significantly.

The MCP1653R-E/UN offers current mode control and soft-start features. The current mode control ensures the correct current levels and is the key to achieving fast transient response and improved line and load regulation. The current mode control also helps maintain a constant switching frequency, even under circumstances where the voltage is varied significantly.

The device provides over-voltage protection, over-current protection, thermal protection and short-circuit protection, thus eliminating the risk of data loss and system crashes due to power failure. It also integrates an synchronization function, which permits the use of multiple controllers operating in unison, such as in a power supply system with redundant power paths.

Conclusion

The MCP1653R-E/UN is a DC DC switching controller offering a wide operating input voltage range of 8 V to 60 V, and can also operate from a single Li-Ion cell. It can be used for step-down (buck) or step-up (boost) applications. It is highly power efficient and can be used in automotive, industrial, consumer, and medical applications. The device offers current mode control and soft-start features. It also provides over-voltage protection, over-current protection, thermal protection and short-circuit protection.

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