HVLED007 Transition mode PFC controller for flyback converters 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. Features In practice, with little effort it is possible to achieve Transition-mode (quasi-resonant) control of a total distortion of the input current (THD) lower flyback PFC pre-regulators than 10% at full load and lower than 20% at 30% load over the entire input voltage range. Proprietary input current shaper for minimum THD of line current The IC is provided with a control input intended for being driven by the phototransistor of an Control input for isolated feedback and optocoupler to close a secondary-regulated optocoupler driving isolated control loop. However, with the addition Output overvoltage protection of a simple external circuitry it can be used to Overload and short-circuit protection close a primary-regulated voltage loop as well. Low ( 60 A) start-up current and low ( 4 ma) The HVLED007 includes protection features to quiescent current handle overload, short-circuit and overvoltage Digital leading-edge blanking on current sense conditions. -600/+800 mA totem pole gate driver with The totem-pole output stage, capable of 600 mA UVLO pull-down and voltage clamp source and 800 mA sink current, is suitable for big MOSFET drives which, combined with the other SO8 package features, makes the device an excellent low-cost solution for EN61000-3-2 compliant SMPS up to Applications 100 W. Flyback PFC converters for: Table 1. Device summary AC-DC LED drivers for domestic, commercial and industrial lighting Order code Package Packaging Street lighting HVLED007 Tube SO8 EN61000-3-2 compliant SMPS HVLED007TR Tape and Reel Description The HVLED007 is a current-mode PFC controller specific for isolated high power factor, flyback January 2019 DS12866 Rev 1 1/33 This is information on a product in full production. www.st.comContents HVLED007 Contents 1 Block diagram 3 2 Pin connections . 4 3 Electrical characteristics . 6 4 Application information 9 4.1 Introduction . 9 4.2 Input current shaping function - operating principle 9 4.3 Operation of a Hi-PF QR flyback converter based on the HVLED007 . 13 4.4 Shaping capacitor (C ) selection (pin CT) . 16 t 4.5 Control input for isolated feedback and optocoupler driving (pin COMP) 17 4.6 Multiplier input for input voltage sensing (pin MULT) 19 4.7 Current sensing input (pin CS). Sense resistor (Rs) selection . 19 4.8 Zero current detection and triggering block (pin ZCD) starter . 22 4.9 Overload and short-circuit protection (OCP function) 23 4.10 Overvoltage protection (OVP function) . 24 4.11 Soft-restart function . 25 4.12 Suggested step-by-step design procedure of a Hi-PF QR flyback converter based on the HVLED0007 26 5 Referenced documents 29 6 Package information 30 7 Revision history . 32 2/33 DS12866 Rev 1