UC28023DW

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UC28023DW is a DC-DC switching controller belonging to the Voltage Regulators series in the PMIC family. This versatile device is an integrated hot-swap circuit featuring a very low 3-2mΩ on-resistance. It offers built-in fault sensing for safety-critical applications and check protection for high density power system designs.

The UC28023DW is designed to provide powerful DC-DC power management solutions for various high-performance consumer and industrial products, such as datacenter servers, telecom system back planes, storage systems, and general-purpose DC-DC power supplies. It can be used in designs up to 6V and/or up to 24A.

UC28023DW’s Working Principle

UC28023DW uses a wide range of high-performance design techniques to manage multiple DC-DC power sources and deliver precisely controlled output voltages. The controller provides a wide range of operating modes, and the basic design is based on a constant-voltage control and protection output stage.

The device uses a single output stage, consisting of a main power MOSFET to provide a regulated output voltage. A set of internal temperature and current limit circuits monitors the main power MOSFET and if the output voltage exceeds a predefined level, the MOSFET is disabled and current is drawn from an external sensing resistor.

The UC28023DW employs a low-voltage protection circuit that immediately turns off the main power MOSFET when an over-current scenario is detected. It also provides advanced fault monitoring and diagnostics, enabling minimal downtime during critical start-up and operational events.

The UC28023DW includes a current-limit circuit which will reduce the maximum output current if an over-current condition is detected. This protection circuit safeguards the MOSFET, preventing permanent damage in the case of an overload.

The controller also provides an adjustable over-voltage protection circuit, allowing the system designer to set a range of over-voltage protection levels. This circuit disables the main power MOSFET in the event of an over-voltage scenario.

The UC28023DW can be used in a variety of applications, from low-voltage to higher power systems. It is designed to extend the life of the load circuit, prevent over-currents and reduce heat dissipation. By providing fault monitoring and protection, the UC28023DW can help ensure safety in multiple-load designs.

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