UCC28730D

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The UCC28730D is an offline switching power supply (SPS) controller. It is an integrated circuit (IC) designed to provide a regulated power supply with good power efficiency. It is part of the PMIC – AC DC Converters, Offline Switchers family of products. It is designed to be used in applications such as automotive, industrial and telecoms.

The UCC28730D is a current mode, slope compensated, fixed frequency, asymmetrical zero-crossing, high efficiency, non-isolated offline switcher with integrated FET. It is a single-stage topology with peak current mode control. It has a leading edge blanking (LEB) feature to minimize electromagnetic interference (EMI). The UCC28730D is rated for an input voltage of 8V to 40V, and a switching frequency of up to 500 kHz.

The device operates by controlling the current flowing through the main switch. When the current reaches a certain peak threshold, the control circuit pulls the main switch low and turns the power supply off. This happens at a certain interval dictated by the time constant of the control loop. This time constant is adjustable in the UCC28730D, allowing for optimal frequency response.

The UCC28730D also includes features like primary-side regulation, over voltage protection (OVP) to protect against input under-voltage and over-voltage conditions, over temperature protection (OTP), and soft start to reduce inrush current. It also includes auxiliary output pins to provide protection signals. It also has a low jitter mode, which enables the device to achieve excellent stability performance even at low switching frequencies.

The UCC28730D can be used in applications such as audio amplifiers, low power LED lighting, DSLR camera batteries, computers, air conditioners, refrigerators, house appliances, and more. It also can be used in automotive DC-DC converters, automotive on-board chargers and AC/DC Adapter applications. It is also suitable for use in telecom applications, power supplies for solar panels, battery chargers, and many other applications.

The UCC28730D is a highly efficient and cost-effective integrated circuit. It is easy to use and reliable, making it perfect for many different applications where reliability, efficiency and performance are of an essence. With its high level of integration and feature set, the UCC28730D offers an ideal solution for many applications.

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