Current-mode PFC controllers ideal for indoor and outdoor lighting
STMicroelectronics HVLED007 Current-Mode PFC Controllers, available now from Mouser, provides a special circuit that allows High-PF quasi-resonant flyback converters to draw a theoretically sinusoidal input current from a power line. The IC is offered with a control input intended for being driven by the phototransistor of an optocoupler to shut a secondary-regulated isolated control loop. However, with the extension of a simple external circuitry, it can be utilised to close a primary-regulated voltage loop, too.
The device provides protection features to manage overload, short-circuit and overvoltage conditions. The totem-pole output stage, able for 600mA source and 800mA sink current, is fitting for big MOSFET drives. This totem-pole stage coupled with the other features makes the device an attractive low-cost solution for EN61000-3-2 compliant SMPS up to 100W.
The PFC Controllers are perfect for both indoor and outdoor solid-state lighting applications and offer an extended temperature range operation down to -40C with guaranteed electrical specification.