HVLED007

HVLED007 Transition mode PFC controller for flyback converters Features  Transition-mode (quasi-resonant) control of flyback PFC pre-regulators  Proprietary input current shaper for minimum THD of line current  Control input for isolated feedback and optocoupler driving  Output overvoltage protection  Overload and short-circuit protection  Low (≤ 60 μA) start-up current and low (≤ 4 ma) quiescent current  Digital leading-edge blanking on current sense  -600/+800 mA totem pole gate driver with UVLO pull-down and voltage clamp  SO8 package Applications Flyback PFC converters for:  AC-DC LED drivers for domestic, commercial and industrial lighting  Street lighting  EN61000-3-2 compliant SMPS Description The HVLED007 is a current-mode PFC controller specific for isolated high power factor, flyback Datasheet - Production data converters operated in transition mode (aka quasi-resonant operation). Targeting both indoor and outdoor solid-state lighting applications, it provides extended temperature range operation down to -40 °C with guaranteed electrical specification. The main feature of this IC is a special circuit (Input Current Shaper, ICS), that enables High-PF quasi-resonant flyback converters to draw a theoretically sinusoidal input current from the power line, unlike the traditional control. In practice, with little effort it is possible to achieve a total distortion of the input current (THD) lower than 10% at full load and lower than 20% at 30% load over the...