Texas Instruments UCC3583 Switch Mode Secondary Side Post Regulator UCC3583N

The UCC3583 is a switch mode secondary side post regulator designed for precision regulation of auxiliary outputs in multiple output power supplies. It operates with a high frequency of over 500 kHz and is suitable for both single-ended and center-tapped secondary circuits. The device features a leading edge pulse width modulator that generates the gate drive signal for a FET power switch, allowing for effective output voltage regulation. This regulator includes a high current gate driver capable of sinking 0.5A and sourcing 1.5A, as well as an average current limiting loop that can be programmed for foldback operation to minimize dissipation during short circuit conditions. The UCC3583 also incorporates undervoltage lockout (UVLO), soft start circuitry, and protection features, making it a robust choice for applications requiring reliable performance. The device is available in a 14-pin PDIP package and operates within a temperature range of 0°C to 70°C. Its design allows for synchronization with other components in a system, enhancing its versatility in complex power supply designs.