UCC28086DR

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UCC28086DR is an integrated Power Supply Controller with a unique set of features to enable high performance and high efficiency, DC voltage regulator applications. Its integrated design includes a Pulse Width Modulated (PWM) controller, a Step-Down converter, a current sensing circuit, and diagnostic features. It is designed for providing power management in up to 12V to 24V input, DC input, and up to 48V output systems.

UCC28086DR is ideal for a wide range of DC/DC Voltage Regulator applications such as Computer Motherboards, Solid State Drives (SSDs), LED lighting and AC-DC adaptors. It has the capability to provide high efficiency and accurate output voltage regulation over a wide input voltage range and temperature.

UCC28086DR is designed to work in circuits with a maximum rating of 24V, enabling high efficiency and wide input voltage range. Compared to other DC/DC voltage regulator ICs, UCC28086DR offers higher current capability and higher drive currents, allowing for the use of large external MOSFETs and output inductor. The integrated Over Voltage Protection (OVP) feature enhances system performance, reliability and safety by preventing output voltage overshoot during transient load conditions.

The built-in PWM Controller uses advanced Pulse Width Modulation (PWM) technology to provide a precise and efficient control of the output voltage. The pulse width modulation control method is used to dynamically adjust the operating frequency of the converter to maintain a precise output voltage while keeping the input to output voltage ratio constant. The low frequency PWM switching minimizes the overall component count, reducing costs, and the integrated current sensing circuitry allows for precise current overload protection. Additionally, the frequency is adjustable to obtain optimal performance due to component and load variation.

UCC28086DR provides excellent thermal performance with its integrated current and voltage sense circuitry. Its on-chip thermal management includes thermal compensation for increased component and load accuracy, temperature sensing to monitor semiconductor junction temperatures, and temperature shutdown for prevention of component overheating.

UCC28086DR also includes an integrated soft start function which allows the user to reduce output voltage overshoot and EMI. The integrated power up reset circuit keeps the output in its default state until the main power of the system is applied to it. This prevents any possible reverse current from flowing back into the system.

UCC28086DR is designed to work in high current variable voltage applications. Its advanced power saving design enables power saving during low load conditions. It also includes a low input/output differential sensing circuit which allows low standby current consumption due to the controlled output voltage. The output voltage can be accurately set by an external voltage divider. The integrated output voltage rail clamp in the switch controller blocks the output voltage from going below the ground. This prevents any false triggering of the fault protection circuitry.

UCC28086DR is easy to use and its design is user-friendly. It includes a fault protection circuit with an open loop, underground, over temperature and under voltage protection features. In addition, integrated diagnostic features provide feedback to the user with estimation of the current consumed by the controller and feedback on the output voltage.

In conclusion, UCC28086DR is an ideal device for a wide range of DC/DC voltage regulator applications to achieve power efficient and high efficiency performance. Its pulse width modulation control method, integrated thermal management, integrated soft start and user-friendly design makes it popular among the power supply design engineers. Its ease of use, high performance and diagnostic features make it a perfect choice for modern power systems.

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