UCC35706DGK

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The UCC35706DGK is an integrated offline switching controller from Texas Instruments. It is an innovative mixed-signal IC designed as a flexible, low-cost solution for controlling offline switching applications. The UCC35706DGK is part of TI’s family of Power Management Integrated Circuits (PMICs), and falls within the categories of AC DC Converters and Offline Switchers. The IC enables designers to implement applications such as flyback topology converters, half and full bridge converters with integrated high-voltage startup solutions, and push-pull converters with added power savings. It stands apart from other solutions with its positive-current-mode control technique and includes a special feature to minimize audible noise in the output voltage.

The device combines a high level of integration, including an on-chip pulse width modulation (PWM) controller, line voltage feed forward techniques, over-voltage protection, and a current sensing comparator. The UCC35706DGK uses a synchronous rectification (SR) methodology, enabling the use of smaller, low-cost magnetics for offline applications. The device combines multiple protection features, such as over-temperature protection (OTP), over-current protection (OCP), and over-voltage protection (OVP). All internal control modes are enabled through external pin control, and each can be changed individually.

The UCC35706DGK has many main features and benefits, including flexibility, improved system reliability, and reduced design time and effort. The controller is highly integrated and efficient, allowing it to achieve an output power of up to 30W without the need for an external switch. It is also protected against an input voltage range of 80V with a limited number of external components. Other features include an adjustable oscillator frequency range of 25 kHz to 500 kHz, a cycle frequency jitter of 1 kHz, an on/off time gap of 75 μs, an external synchronization capability of up to 640 kHz, and a dead time of up to 10 μs.

The UCC35706DGK boasts a wide range of application fields and work principles. One of the more prominent applications of the ic is in full bridge converters. In full bridge configurations, the UCC35706DGK provides precision control and protection of both the high- and low-side switches. It features adjustable frequency, over-current protection (OCP), adjustable dead time, and adjustable current sensing for precise control. The device can also be used in half bridge applications, where the UCC35706DGK provides precise control and protection of the high-side switch only. Lastly, the IC can also be used in flyback converters, where the UCC35706DGK provides precise current sensing to the primary side of the transformer and precise control of the high- and low-side switches.

The UCC35706DGK is a highly integrated and flexible PMIC, capable of providing control and protection of offline switch applications. It offers precise control and protection of high- and low-side switches, as well as integrated protection features such as over-temperature, over-voltage, and over-current protection. The device allows for a high level of efficiency and power savings in numerous AC/DC converter applications. The device’s wide range of features, benefits, and application fields make it an ideal solution for offline switching applications.

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