32-bit microcontroller L5991

general purposepulse width modulationprogrammable

ST's wide portfolio of pulse-width modulation (PWM) controllers can support isolated and non-isolated AC-DC and DC-DC switch mode power supplies based on the most popular topologies in both single-ended (such as flyback, forward or quasi-resonant) and double-ended configurations (such as asymmetrical half-bridge) for mid- to high-power SMPS. Innovative PWM controllers for higher converter efficiency and lower design costs Our PWM controller offer includes a number of advanced and digital controllers, featuring innovative solutions to optimize converter efficiency in a wide range of load conditions and especially at light loads such as for high voltage start-up. These PWM controller ICs also integrate a comprehensive set of protections for enhanced robustness and reliability even in an extended temperature range for outdoor applications. The result is a reduction in the number of external components, minimizing converter size and cost. The industry standard controllers of the UC (voltage mode) and SG (current mode) series are also available for more mainstream SMPS designs.