FAN7535 PFC & Ballast Control IC

Transcription

1 FAN7535 PFC & Ballast Control IC Features PFC, Ballast Control, and Half-Bridge Driver in One IC PFC Driver Current Capability: +500mA/-800mA Critical Conduction Mode Control Type PFC Internal Clamping Zener Diode (PFC): 23 Under-oltage Lockout with 3.5 of Hysteresis (PFC) Internal Clamping Zener Diode (Ballast): 15 Lower di/dt Gate Driver for Better Noise Immunity Under-oltage Lockout with 1.8 Hysteresis (Ballast) Ballast Driver Current Capability: +350mA/-650mA Programmable Preheat Time & Frequency Programmable Run Frequency Programmable Ignition Sweep Time Internal Active ZS Control Internal Protection Function (Latch Mode) Description December 2007 FAN7535 provides simple, high-performance, active power factor correction (PFC), and ballast control. The FAN7535 is optimized for all kinds of fluorescent lamps, which require minimum board area and reduced external components. The FAN7535 PFC control block to reduce the input current THD lower than conventional CRM boost PFC methods. An innovative Active Zero oltage Switching (AZS) block reduces the swtiching power loss. A dedicated timing section in the FAN7535 allows the user set the necessary parameters for proper lamp preheat and ignition. 24-SOP Applications Fluorescent Lamp Ballast Ordering Information Part Number Package Operating Temperature Range Packing Method FAN7535M Tube 24-SOP -25 C ~ 125 C FAN7535MX Tape & Reel All packages are lead free per JEDEC: J-STD-020B standard. FAN7535 Rev

2 Typical Application Diagrams Figure 1. Typical Application Circuit for Fluorescent Lamp FAN7535 Rev

3 Internal Block Diagram DDB RT 1 3 IRT IRT 4 CPH IPH =0.6*IRT IPH* PRE-HEAT 0A CTRL CPH<3 Yes 1.6uA OSCILLATOR 9.6uA No IPH* 10 REG Reference IPH BGR CPH BIAS 3 5 DD sense 15 SHUNT REGULATOR BIAS & SYSTEM LATCH ULO SDH ULO R Q S Q TSD SYSHALT SDL DEAD-TIME CTRL DDH/DD LSH DDH/DD LSH SDL SDH SHORT-PULSE GENERATOR SET RESET HIGH-SIDE DRIER B ULO Noise S Q Canceller R Q S LOW-SIDE GATE DRIER DELAY B HO S LO CPH 5 5/3 ADAPTIE ZS ENABLE LOGIC S Q SDL SDH R Q RESET SYSHALT ADAPTIE ZS CONTROLLER TRANSITION SENSING 6 GND DDP Ref DDP - Internal Bial Disable Timer Driver Output 16 OUT ZCD Zero Current Detector S R Q OP CS MOT k 2.9 Saw Tooth Generator Ramp signal 8pF Zero Current 0.8 Comparator Error Amplifier 1~5 Range Disable Gm - + ref IN 1 offset Comp Figure 2. Functional Block Diagram (2chips-1PKG) 8 FAN7535 Rev

4 Pin Configuration 1 DDB B 24 2 NC NC HO NC S NC LO DDP OUT NC FAN7535 RT NC CPH GND IN COMP NC MOT Figure 3. Pin Configuration (Top iew) 11 NC NC CS ZCD 13 Pin Definitions Pin # Name Description 1 DDB Supply voltage for ballast part 2 NC No connection 3 RT Oscillator frequency set resistor 4 NC No connection 5 CPH Preheating time set capacitor 6 GND Ground for ballast part & PFC part 7 IN Inverting input of the error amplifier 8 COMP Output of the transconductance error amplifier 9 NC No connection 10 MOT Set the slope of the internal ramp 11 NC No connection 12 CS Input of the over-current protection comparator 13 ZCD Input of the zero current detection block 14 NC No connection 15 NC No connection 16 OUT Gate driver output 17 DDP Supply voltage for PFC block 18 LO Low-side output 19 NC No connection 20 S High-side floating supply return 21 NC No connection 22 HO High-side output 23 NC No connection 24 B High-side floating supply FAN7535 Rev

5 Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. T A =25 C, unless otherwise specified. Symbol Parameter Min. Typ. Max. Unit PFC PART DDP Supply oltage z I OH, I OL Peak Drive Output Current l CLAMP Driver Output Clamping Diodes O > CC or O < -0.3 ±10 ma l DET Detector Clamping Diodes ±10 IN Error Amplifier, MOT, CS Input oltages BALLAST PART B High-side Floating Supply S High-side floating supply return IN RT, CPH Pins Input oltage CL Clamping oltage CL I CL Clamping Current Level 25 ma d S /dt Allowable Offset oltage Slew Rate 50 /ns Common T OPR Operating Temperature Range T STG Storage Temperature Range C P D Total Power Dissipation 1.5 W θ JA Thermal Resistance (Junction-to-Air) 83 C/W Caution: Do not supply a low-impedance voltage source to the internal clamping Zener diode between the GND and the DDB and DDP pins of this device. Use a common supply between the two ICs (PFC, Ballast) only under careful attention. FAN7535 Rev

6 Electrical Characteristics DDP =14, T A = 25 C, unless otherwise specified. Symbol Characteristics Test Condition Min. Typ. Max. Unit PFC PART (1) UNDER-OLTAGE LOCKOUT SECTION th(start) Start Threshold oltage DDP Increasing th(stop) Stop Threshold oltage DDP Decreasing H Y(ULO) ULO Hysteresis z Zener oltage I DDP = 20mA SUPPLY CURRENT SECTION I st Start-up Supply Current DDP = TH(START) ma I DDP Operating Supply Current Output not switching I DDP(dyn) Dynamic Operating Supply Current 50kHz, C L = 1nF ma I DD(dis) Operating Current at Disable IN = ma ERROR AMPLIFIER SECTION ref1 oltage Feedback Input Threshold1 T A = 25 C D ref1 Line Regulation 14 DDP (1) D ref3 Temperature Stability of REF 20 m Ib (ea) Input Bias Current 1 inv I source Output Source Current inv = ref ma I sink Output Sink Current inv = ref eao(h) Output Upper Clamp oltage inv = ref eao(z) Zero Duty Cycle Output oltage (2) g m Transconductance µmho MAXIMUM ON-TIME SECTION MOT Maximum On-Time oltage R MOT = 40.5Ω T ON-MAX Maximum On-Time Programming R MOT = 40.5Ω,T A = 25 C µs CURRENT-SENSE SECTION CS(LIMIT) Current Sense Input Threshold oltage Limit Ib (cs) Input Bias Current 0 CS ma (1) Td (cs) Current Sense Delay to Output ns Notes: 1. Please refer to the FAN7529 datasheet and AN-6026 application note for more detailed information. Available on Fairchild s website at: Datasheet: Application Note: 2. This parameter, although guaranteed, is not 100% tested in production. FAN7535 Rev

7 Electrical Characteristics (Continued) DDP = 14, T A = 25 C, unless otherwise specified. Symbol Characteristics Test Condition Min. Typ. Max. Unit ZERO CURRENT DETECT SECTION (3) th(zcd) Input oltage Threshold HY (3) (ZCD) Detect Hysteresis clamp(h) Input High Clamp oltage I DET = 3mA clamp(l) Input Low Clamp oltage I DET = -3mA Ib (ZCD) Input Bias Current 1 ZCD ma I (3) source(zcd) Source Current Capability T A = 25 C -10 (3) I sink(zcd) Sink Current Capability T A = 25 C 10 ma (3) T DEAD Maximum Delay, ZCD to Output Turn-on OUTPUT SECTION oh Output oltage High I O = -100mA, T A = 25 C ol Output oltage Low I O = 100mA, T A = 25 C (3) T r Rising Time C I = 1nF (3) T f Falling Time C I = 1nF ns O(MAX) Maximum Output oltage DDP = 20, I O = 100mA O(ULO) Output oltage with ULO Activated DDP = 5, I O = 100mA 1 RESTART TIMER SECTION t d(rst) Restart Time Delay ms OER-OLTAGE PROTECTION SECTION OP OP Threshold oltage T A = 25 C HY (OP) OP Hysteresis T A = 25 C ENABLE SECTION th(en) Enable Threshold oltage HY (en) Enable Hysteresis Note: 3. These parameters, although guaranteed, are not 100% tested in production. FAN7535 Rev

8 Electrical Characteristics (Continued) BIAS ( DDB, BS ) = 14.0, T A = 25 C, unless otherwise specified. Symbol Characteristics Condition Min. Typ. Max. Unit BALLAST PART (4) Supply oltage Section DDTH(ST+) DDB ULO Positive Going Threshold DDB Increasing DDTH(ST-) DDB ULO Negative Going Threshold DDB Decreasing DDHY(ST) DDB -side ULO Hysteresis 1.8 CL Supply Clamping oltage I DDB = 10mA I ST Start-up Supply Current DDB = μa I DDB(dyn) Dynamic Operating Supply Current 50kHz, C L = 1nF 3.2 ma High-Side Supply Section ( B - S ) HSTH(ST+) High-side ULO Positive Going Threshold BS Increasing HSTH(ST-) High-side ULO Negative Going Threshold BS Decreasing HSHY(ST) High-side ULO Hysteresis 0.6 I HST High-side Quiescent Supply Current BS = μa I HD High-side Dynamic Operating Supply Current 50kHz, C L = 1nF 1 ma I LK Offset Supply Leakage Current B = S = μa Oscillator Section MPH CPH Pin Preheating oltage Range I PH CPH Pin Charging Current During Preheating CPH = μa I IG CPH Pin Charging Current During Ignition CPH = MO CPH Pin oltage Level at Running Mode 7.0 f PRE Preheating Frequency R T = 80kΩ, CPH = khz f OSC Running Frequency R T = 80kΩ khz DT MAX DT MIN Output Section Maximum Dead Time Minimum Dead Time CPH = 1, S = GND in Preheat Mode CPH = 6, S = GND in Run Mode I OH+ High-side Driver Sourcing Current PW = 10μs I OH- High-side Driver Sinking Current PW = 10μs I OL+ Low-side Driver Sourcing Current PW = 10μs I OL- Low-side Driver Sink Current PW = 10μs t HOR High-side Driver Turn-on Rising Time C L = 1nF, BS = t HOL High-side Driver Turn-off Rising Time C L = 1nF, BS = t LOR Low-side Driver Turn-on Rising Time C L = 1nF, BS = t LOL Low-side Driver Turn-off Rising Time C L = 1nF, BS = S (5) Maximum Negative S Swing Range for Signal Propagation to High-side Output 3.1 μs 1.0 μs ma ns -9.8 FAN7535 Rev

9 Electrical Characteristics (Continued) BIAS ( DDB, BS ) = 14.0, T A = 25 C, unless otherwise specified. Symbol Characteristics Condition Min. Typ. Max. Unit Protection Section CPHSD Shutdown oltage 2.6 RT = 0 After Run Mode I SD Shutdown Current μa TSD (5) Thermal Shutdown 165 C Notes: 4. Please refer to the FAN7711 datasheet for more detailed information. Available on Fairchild s website at: Datasheet: 5. This parameter, although guaranteed, is not 100% tested in production. FAN7535 Rev

10 Component List for 32W Two Lamps Part alue Note Part alue Note Resistor C55 15nF/630 Miller Capacitor R1 330kΩ 1/2W C56 2.7nF/1k Miller Capacitor R2 750kΩ 1/4W C57 15nF/630 Miller Capacitor R3 100Ω 1/2W C58 2.7nF/1k Miller Capacitor R4 20kΩ 1/4W Diode R5 47Ω 1/4W D1 1N4007 1k,1A R6 10kΩ 1/4W D2 1N4007 1k,1A R7 50kΩ 1/4W D3 1N4007 1k,1A R8 47kΩ 1/4W D4 1N4007 1k,1A R9 0.3Ω 1W D5 UF4007 Ultra Fast,1k,1A R10 1MΩ 1/4W D6 UF4007 Ultra Fast,1k,1A R11 1MΩ 1/4W D7 1N ,1A R kΩ 1/4W,1% D8 1N ,1A R13 220kΩ 2W D50 UF4007 Ultra Fast,1k,1A R50 150kΩ 1/4W D51 UF4007 Ultra Fast,1k,1A R51 150kΩ 1/4W D52 UF4007 Ultra Fast,1k,1A R52 150kΩ 1/4W ZD1 IN4746A Zener 18, 1W R53 90kΩ 1/4W,1% MOSFET R54 10Ω 1/4W M1 FQPF5N60C 500,6A R55 47Ω 1/4W M2 FQPF5N50C 500,5A R56 47kΩ 1/4W M3 FQPF5N50C 500,5A R57 47Ω 1/4W Fuse R58 47kΩ 1/4W Fuse 3A/250 Capacitor TNR C1 47nF/275 AC Box Capacitor TNR 471 C2 150nF/275 AC Box Capacitor C3 2200pF/3k Ceramic Capacitor NTC C4 2200pF/3k Ceramic Capacitor NTC 10D-09 C5 0.22µF/630 Miller Capacitor Line Filter C6 12nF/50 Ceramic Capacitor LF1 40mH C7 22µF/50 Electrolytic Capacitor Transformer C8 39pF/50 Ceramic Capacitor L1 0.94mH (75T:10T) EI2820 C9 1µF/50 Ceramic Capacitor Inductor C10 0.1µF/50 Ceramic Capacitor L2 3.2mH (130T) EI2820 C11 47µF/450 Electrolytic Capacitor L3 3.2mH (130T) EI2820 C50 10µF/50 Electrolytic Capacitor IC C51 1µF/50 Ceramic Capacitor U1 FAN7535 Fairchild Semiconductor C µF/25 Ceramic Capacitor, 5% C53 100nF/50 Ceramic Capacitor C54 470pF/1k Ceramic Capacitor FAN7535 Rev

11 Package Dimensions 15.40±0.20 A B 7.50± PIN ONE INDICATOR M C B A 1.75 TYP 1.27 TYP 0.55 TYP LAND PATTERN RECOMMENDATION 2.65 MAX SEE DETAIL A C ± C SEATING PLANE X 45 (R0.10) NOTES: UNLESS OTHERWISE SPECIFIED (R0.10) 8 0 GAGE PLANE 0.25 A) THIS PACKAGE CONFORMS TO JEDEC MS-013, ISSUE E, DATED SEPT B) ALL DIMENSIONS ARE IN MILLIMETERS. C) DIMENSIONS DO NOT INCLUDE MOLD FLASH OR BURRS. D) LANDPATERN STANDARD: SOIC127P1030X265-24L E) DRAWING FILENAME: MKT-M24BRE2 0.40~1.27 (1.40) SEATING PLANE DETAIL A SCALE: 2:1 M24BRE2 Figure Lead Small Outline Package (SOP) Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor s online packaging area for the most recent package drawings: FAN7535 Rev

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