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PFC ( Single Stage )

PFC ( Single Stage ). 36. CRM PFC Controller Evaluation Board. FAN7529/FAN6961 -S ingle Stage PFC f or Power-LEDs. FAN7529/FAN6961 Reference Design. •. Reference #: FEBxxxx. •. CRM PFC Topology. •. Input : 90~264VAC / 47~ 63Hz. •. Output : 24V/2A. Fairchild Single Stage PFC.

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PFC ( Single Stage )

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  1. PFC ( Single Stage ) 36

  2. CRM PFC Controller Evaluation Board FAN7529/FAN6961 -Single Stage PFC for Power-LEDs FAN7529/FAN6961 Reference Design • Reference #: FEBxxxx • CRM PFC Topology • Input : 90~264VAC / 47~ 63Hz • Output : 24V/2A Fairchild Single Stage PFC Solution Benefits • Over 90% Power Factor can be achieved by single power stage. • Simple circuit configuration & design flexibility with flyback topology. • Reduce board space & total BOM cost. 9 High efficiency about over 85% max. eff. 9 External circuitry for CC function needed 9 over 90% power factor under universal input. 9 CC performance follows external CC circuit performance 37

  3. Power MOSFETs for Single Stage ( Flyback Type ) Power MOSFET for Single Stage ( Flyback Type ) RDS(ON) BVdss Product Qg Typ. ID PD Part Number Package Polarity Max (ohm) [ V ] Release [ nC ] [ A ] [ W ] @ VGS =10V FQPF8N80C TO-220F N 800 Released 1.55 35 8 59 FQPF7N80C TO-220F N 800 Released 1.9 27 6.6 56 FQPF6N80C TO-220F N 800 Released 2.5 21 5.5 51 FQPF3N80C TO-220F N 800 Released 4.8 13 3 39 FQP8N80C TO-220 N 800 Released 1.55 35 8 178 FQP7N80C TO-220 N 800 Released 1.9 27 6.6 167 FQP6N80C TO-220 N 800 Released 2.5 21 5.5 158 FQP3N80C TO-220 N 800 Released 4.8 13 3 107 FQA10N80C_F109 TO-3P N 800 Released 1.1 45 10 240 FQA8N80C_F109 TO-3P N 800 Released 1.55 35 8.4 220 FQA7N80C_F109 TO-3P N 800 Released 1.9 27 7 198 Universal Input + EMI Input LED Lighting Filter (85 ~ 265 Vac) Load & (Up to 100W) Snubber Rectifier Plan for 800V Super-Junction MOSFET for higher Power ZCD D VCC Feedback Controller & MOT Isolation FB S

  4. Rectifiers for Single Stage ( Flyback Type ) VRRM IF (AV) VFM trr (max) Product Classification Part Number PKG [ V ] [ A ] [ V ] [ ns ] Release RURP860 600 TO220 8 1.5 70 Released FFPF10UP60S 600 TO220F 10 2.2 90 Released UltraFast RURP1560 600 TO220 15 1.5 60 Released RURP3060 600 TO220 30 1.5 60 Released HyperFast FFP/PF04H60S 600 TO220/F 4 2.1 35 Released I / II RHRD660/S 600 I/D PAK 6 2.1 30 Released FFP/PF08H60S 600 TO220/F 8 2.1 35 Released FFPF10H60S 600 TO220F 10 2.5 35 Released RHRP1560 600 TO220 15 2.1 40 Released RHRP3060 600 TO220 30 2.1 45 Released Universal Input + EMI Input LED Lighting Filter (85 ~ 265 Vac) Load & (Up to 100W) Snubber Rectifier ZCD D VCC Feedback Controller & MOT Isolation FB S

  5. Concept of Single Stage PFC Conventional Solution 1st Stage: PFC 2nd Stage: DC-DC Converter Single Stage Solution ™ Isolation < 100W Flyback ™ Non-isolation Boost Buck-boost < 250W Cuk Sepic ™ Parallel Operation> 250W - Merits: Low-cost solution ( BOM reduction of 5 components ) - Demerits: Lower Power Factor, Higher rating components especially output capacitance.

  6. Experimental Results ( 100W Single Stage PFC ) Universal Input + EMI Input LED Lighting Filter (85 ~ 265 Vac) Load & (Up to 100W) Snubber Rectifier Key Challenge Factor ZCD D VCC MO ¾ Main components Isolation FB S - MOSFET: FCPF11N60 800V MOSFET needed - FRD: FFPF08H60S - Controller: (modified) FAN7530 ¾ Specification - Flyback-type Single stage PFC with CRM based constant voltage supply - 85V ~ 265 Vac input range - Output voltage: 48V, 2.08A, 100W - Application: LED Lighting

  7. Efficiency Continued.. 90 Output Voltage (V) Line voltage (AC) At Full load (100W) At Light load (5W) 88 85 48.2 48.8 115 48.1 48.5 86 145 48.0 48.3 175 48.0 48.3 84 205 48.0 48.3 82 235 48.0 48.3 265 48.0 48.3 80 90 120 150 180 210 240 270 Line Voltage (AC) Î ±1% regulation of output voltage Input voltage (AC) Output Efficiency (%) 85 83.6 115 85.6 145 86.7 175 86.5 205 86.6 235 86.6 265 86.3

  8. Power Factor Continued.. 1.00 Input Voltage 0.96 0.92 Input Current 0.88 PF=0.997 90 120 150 180 210 240 270 Line Voltage (AC) Input voltage (AC) Power Factor 85 0.997 PF=0.948 115 0.994 145 0.988 175 0.979 205 0.966 235 0.948 265 0.924 PF=0.924

  9. Waveforms Continued.. Switching waveforms at 110Vac, 100W Switching waveforms at 220Vac, 100W Id (5 A/div) Vds (500 V/div) 2 ms/Div 2 ms/Div Vgs (20 V/div) Id (5 A/div) Vds (200 V/div) 4 us/Div 2 us/Div

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