EVAL6585D-230V Combo IC for PFC and ballast control Data Brief General description reduction are obtained as required by international norms, especially in case of Universal input voltage operation. A new control IC, the L6585, has been designed to manage electronic ballasts for fluorescent lamps; it includes both Power Factor Correction and half-bridge sections and embeds a wide range of features to provide an energy saving and cost effective solution. Particular care has been dedicated to pre-heating and ignition phases prior to lamp starting, in order to ensure the proper filament warming up and extend lamp life. Innovative circuitry allows an improved control of the lamp voltage during ignition as well protection against failures due to lamp ageing. The use of this new control IC simplifies the industrialization of electronic ballasts increasing the application reliability and reducing its dimensions and cost. The high-voltage single chip approach optimizes the management of lamp critical conditions like start-up (pre-heating and ignition), fault and lamp replacement. In fact, the internal logic is able to carry out all of these phases being steered by precise internal references and timings. For more info about the L6585D please refer to the related datasheet available at www.st.com. The PFC section has superior performance in terms of harmonic content mitigation. High Power Factor (PF) and Total Harmonic Distortion (THD) Evaluation board November 2006 Rev 1 For further information contact your local STMicroelectronics sales office. 1/6 www.st.com 6 F1 FUSE (2A) J3 4 1 C6 1n 1kV EPCOS 39mH 1 4 + - C14 100n T2 C15 100n 2 2 1 8 5 t RT1 NTC C7 1n 1kV 3 C9 470n R32 8.2k T1 5 1 C19 10n R11 820k R10 820k 8 4 R22 0.82 STF3NK50FP Q3 STTH1L06 DO41 D1 R34 open R23 330 R18 47 1M R35 D3 1N4148 R14 56k C20 1n C4 470n C3 n.c. R5 n.c. R2 3.6M R1 3.6M R3 910k R4 910k R15 62k C5 Q4 bc337 D2 D1N4148 C17 100n C8 330n 2 R30 240K C12 470p R16 56K 680n R12 1.2M R9 13.3k C2 10n R6 42.2K INV COMP MULT CTR EOLR EOLP TCH EOI RF OSC 2/6 ZCD PFCCS PFG HBCS GND LSD VCC OUT HSD BOOT C18 10u R38 12k 100n C16 C24 330n C22 n.c. C1 22u 450V R28 short C21 n.c. R21 short R17 47 R13 47 Title R25 n.a. R24 n.a. 2 C23 10n D5 BZX84C15/ZTX R20 47 C11 1nF 1 L1 1.35mH demo COMBO 230 V R29 short D4 D1N4148 R19 0.68 Q2 STP4NK50Z TO220 Q1 STP4NK50Z TO220 R33 240k R8 n.a. R7 short R31 20k R27 680k R26 680k C10 4.7n 2kV C13b shorted footprint come C13 CON4 R37 510k C13 100nF 250V 1 2 3 4 R36 510k Figure 1. 1 1 3 230V Demo application description EVAL6585D-230V 230V Demo application description The design has been developed to drive a 54W TL fluorescent lamp. Specifically created to drive a T5 lamp, the demo board implements the end of life and the open lamp protections on the half bridge side, and the over-voltage and feedback disconnection protections on the PFC side. This circuit is intended to be used with 230V AC mains. Evaluation board schematic EVAL6585D-230V Table 1. 230V Demo application description Part list Name Value BR1 DF06S R1, R2 3.6M R3, R4 910K R5 n.c R6 42.2K R7 short R8 n.c R9 13.3K R10, R11 820K R12 1.2M R13 47 R14 47K R15 62K R16 56K R17, R18 47 R19 0.68, 1W R20 47 R21 short C1 22F, 450V, EPCOS B43888A5226M9 C2 10nF C3 n.c C4 470nF C5 680nF C6, C7 1nF, 1KV C8 330nF C9 470nF, 630V, EPCCOS B32652 C10 4.7nF, 2kV EPCOS B32653 C11 1nF, 630V C12 470pF C13 100nF, 250V C13b short C14, C15 100nF, X2, 275Vac, EPCOS C16 100nF C17 100nF 3/6 230V Demo application description Table 1. EVAL6585D-230V Part list (continued) Name 4/6 Value C18 10F, 35V C19 10nF R22 0.82 R23 330 R24 n.c R25 n.c R26, R27 680K R28, R29 short R30 240K R31 20K R32 8.2K R33 240K R43 open R35 1M R36, R37 510K R38 12K Q1 STP4NK50ZD Q2 STP4NK50ZD Q3 STD3NK50Z1 Q4 BC817 IC1 L6585D C20 1nF C21 n.c C22 n.c C23 10nF C24 330nF T1 E25, 2.1mH, EPCOS T2363 T2 39mH, EPCOS B822731 F1 2A fuse RT1 NTC, 16R D1 STTH1L06 D2 1N4148 D3 1N4148 D4 1N4148 EVAL6585D-230V Table 1. Revision history Part list (continued) Name 2 Value D5 BZX84C15ZTX L1 ITACOIL, 1.3mH Revision history Table 2. Revision history Date Revision 22-Nov-2006 1 Changes First issue 5/6 EVAL6585D-230V Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. 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