L6585D PFC and Ballast Control IC TARGET SPECIFICATION Features ■ Pre-heating and ignition phases independently programmable ■ Programmable and precise End-of-life protection compliant with all ballast configurations ■ Half-bridge over-current control ■ Ignition voltage control ■ Automatic Re-lamp ■ 1.25µs dead time ■ 3% Oscillator precision ■ Transition mode PFC with over-current protection ■ PFC over-voltage protection and feedback disconnection ■ Under-voltage lock-out SO-20 Applications ■ Electronic ballast Block diagram January 2006 Rev1 This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice. 1/9 www.st.com 9 Contents L6585D Contents 1 Technical Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin Connections and Internal Schematic . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Mechanical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2/9 Rev1 L6585D 1 Technical Overview Technical Overview The L6585 is a ballast control IC with integrated Power Factor Corrector (PFC), designed in High-voltage BCD Off-line technology. This one-chip solution replaces a half bridge controller, a PFC controller, the relevant drivers and the logic necessary to build an electronic ballast. The pre-heating and ignition durations are independently settable as well as the half-bridge switching frequencies for each operating phase (pre-heating, ignition and normal mode) to serve many different lamp types. Another outstanding feature is the capability of limiting the voltage applied to the lamp to a constant value during the ignition phase. The PFC section operates in Transition Mode. The highly linear multiplier includes a special circuit, able to reduce AC input current distortion, that allows wide-range-mains operation with an extremely low THD, even over a large load range. Some IC features, like the under voltage lock-out and the PFC over-voltage and feedback disconnection controls can assure lamp protection. Furthermore, a double threshold comparator on the half bridge current sense provides a sort of current control and avoids the MOSFETs working in the capacitive mode. A double threshold comparator on the PFC current sense prevents the inductor saturation. Other features like the automatic re-lamp for lamp replacing, the failure to strike and the End-Of-Life control, simplify the lamp management. The programmability of the EOL windows comparator thresholds makes the L6585 the only lighting IC compliant with either "lamp-to-ground" or "block capacitor-to-ground" configurations. The driver of the PFC is able to provide 120mA (source) and 250mA (sink) and the drivers of the half-bridge provide 170mA source and sink. Rev1 3/9 Pin Connections and Internal Schematic 2 L6585D Pin Connections and Internal Schematic Figure 1. Pin connection (through top view) BOOT OSC RF HSD EOI OUT TCH VCC EOLP LSD EOL-R GND CTR HBCS MULT PFG COMP PFC CS INV Figure 2. 4/9 ZCD Typical System Block Diagram Rev1 L6585D 3 Mechanical Data Mechanical Data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. Rev1 5/9 Mechanical Data L6585D Table 1. SO-20 Mechanical Data Dimensions mm. inch Ref. Min. Typ. Max. A a1 Typ. 2.65 0.1 Max. 0.104 0.2 a2 0.004 0.008 2.45 0.096 b 0.35 0.49 0.014 0.019 b1 0.23 0.32 0.009 0.012 C 0.5 0.020 c1 45° (typ.) D 12.60 13.00 0.496 0.512 E 10.00 10.65 0.393 0.419 e 1.27 0.050 e3 11.43 0.450 F 7.40 7.60 0.291 0.300 L 0.50 1.27 0.020 0.050 M 0.75 S Figure 3. 6/9 Min. 0.029 8° (max.) Package Dimensions Rev1 L6585D 4 Order codes Order codes Table 2. Order codes Part Number Package Shipment L6585D SO-20 Tube L6585DTR SO-20 Tape and Reel Rev1 7/9 Revision history 5 L6585D Revision history Table 3. 8/9 Document revision history Date Revision 12-Jan-2006 1 Changes Initial release. Rev1 L6585D Revision history Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners © 2006 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com Rev1 9/9