STEVAL-ILB005V2 Demonstration board for the L6585DE combo IC for PFC and ballast control Data Brief Features ■ Input voltage: 88 Vac - 277 Vac ■ Input frequency: 50 Hz - 60 Hz ■ Output power: 54 W ■ Expected efficiency: 90% ■ Expected Input power: 60 W ■ Minimum PF required: 0.95 ■ Maximum THD: 8% ■ Lamp voltage (run mode): 110 Vrms ■ Lamp current (run mode): 455 mArms ■ Maximum ignition voltage: 900 Vpk ■ Maximum preheating voltage: < 240 Vac ■ Preheating time: 1 s ■ Ignition time: 60 - 100 ms Description STEVAL-ILB005V2 Requirements for modern fluorescent lamp electronic ballasts focus on driver efficiency and safety aspects. Another important feature of the IC is its capability to control and limit the lamp voltage during the ignition phase. Previous dedicated ICs for ballast applications allowed designers to achieve good driver efficiency, but they required a lot of external circuitry to obtain good power factor correction, low THD and a full set of protection features. The pre-heating and ignition durations are independently configurable, as are the half-bridge switching frequencies for each operating phase (pre-heating, ignition and normal mode). The STEVAL-ILB005V2 demonstration board is based on the new L6585DE combo IC for ballast applications, which offers designers a highperformance PFC stage, and a high capability, fully programmable, half-bridge high-voltage driver. The device is also equipped with a full set of protection features. Other features, such as half-bridge over-current with frequency increase and PFC over-voltage, allow designers to build a reliable, flexible solution with a reduced component count. Designed in high-voltage BCD off-line technology, the L6585DE embeds a PFC controller, a halfbridge controller, the relevant drivers and all the logic circuitry necessary to build an electronic ballast. March 2009 Rev 2 For further information contact your local STMicroelectronics sales office. 1/4 www.st.com 4 C21 100n 275V-X2 F1 T2A C20 100n 275V-X2 J1 ACin 88-277Vac + earth t RT1 5 T2 2x68mH 1A - 305Vac C23 1n 1kV-Y C22 1n 1kV-Y C2 470n 275V R4 16.2k R3 680k R2 680k C3 5.6n 5 1 R10 75k Q1 STD5NM50-Z 8 4 4 + - 2 3 RS1 0.33 1W R12 220 R1 R11 R1 47 D3 1N4148 8 12 13 2 MULT PFCS PFG R9 ca C4 1n 1 R8 39.7k R7 2.2M R6 2.2M 1 R19 1u C5 C6 ca R16 18k R15 825k R14 825k U1 L6585DE 2 C7 10n C8 1n R18 26.7k C9 1u 29.4k C10 560n R21 cc R20 1.5M R22 240k R29 68k 1 C18 1n LSD OUT HSD 16 18 19 C11 100n C14 100n 15 R1 680k GND 1 OSC 1 3 2 4 R13 825k RF R5 2.2M 3 C1 22u 450V EOI B1 2KBP06M D1 STTH1L06 Tch Tc T1 1.5mH 2.4A 20 4 1 R28 68k 10 INV IN 11 ZCD ZC 9 COMP 7 CTR CT 17 EOLP EOL 5 Vcc EOLL-R 6 BOOT BOO HBCS 14 2 3 2 1 DZ2 cc 2 1 C13 10u R23 cc R2 2 R25 47 R24 47 D2 1N4148 Vcc R33 68k 1 DZ3 cc 2 DZ1 BZX84C15 C12 1n RS2 0.82 1W C17 10n Q3 STD5NM50-Z Q2 STD5NM50-Z R35 68k Vpfc R32 20.3k R31 120k L1 1.3m R27 3.3 R26 3.3 2.4A R30 560k 1 R34 68k C24 cc 680k R40 R41 ca 2 1 2 1 2 . _ 2/4 T5HO-54 -54W C16 100n 630Vdc C15 4.7n 2kV Figure 1. " ' 1 5 4 Vrect Schematic diagram STEVAL-ILB005V2 Schematic diagram STEVAL-ILB005V2 schematic diagram STEVAL-ILB005V2 2 Revision history Revision history Table 1. Document revision history Date Revision Changes 24-Feb-2009 1 Initial release 18-Mar-2009 2 Updated main product on the title and in description 3/4 STEVAL-ILB005V2 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. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. 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