STMicroelectronics (NYSE: STM) today announced the L6462A, a transition-mode (TM) Power Factor Correction (PFC) controller IC that reduces component costs while enabling high efficiency. The device allows compliance with stringent environmental design standards for consumer equipment and power supplies up to 250W. The L6462A can configure a boost-type PFC converter without a conventional voltage divider or analog multiplier by using its current-generation and shaping circuits to create a sinusoidal reference waveform. Furthermore, its gate-driver output detects inductor demagnetization to control the PFC conversion cycle, eliminating the need for an inductor's auxiliary winding or interface components. In addition to reducing component costs, the L6462A's innovative current-shaping circuit and demagnetization detection minimize distortion (Total Harmonic Distortion, THD) and improve efficiency, particularly at medium and light loads. These features deliver PFC with excellent performance and high cost-effectiveness, making it ideal for high-end battery chargers, power adapters, and power supplies for consumer equipment and home appliances such as flat-screen TVs and lighting equipment drivers. With standby current below 60μA, it easily meets strict eco-design regulations for standby power. At high loads, the L6462A operates in quasi-resonant mode (valley switching) to minimize power consumption. As the load decreases, valley skipping progressively reduces the operating frequency to maintain efficiency. Additionally, the low burst-mode threshold allows for smooth dimming in LED lighting applications. The L6462A, a TM-PFC controller, supports a wide AC input voltage range of 90V to 264V and is typically designed to deliver a 400V output voltage. Its improved error amplifier and high-precision voltage reference enhance responsiveness to large load variations, preventing excessive output overshoot and undershoot. The totem-pole output directly drives the external MOSFET