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Fairchild FEBFAN9611 S01U300A, User Manual

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© 2012 Fairchild Semiconductor Corporation 

1 

FEBFAN9611_S01U300A  •  Rev. 0.0.1 

 

 

 

User Guide for 

 

FEBFAN9611_S01U300A 

Evaluation Board 

 
 

FAN9611 300W Interleaved Dual-BCM, 

Low-Profile, PFC Evaluation Board 

 
 

Featured Fairchild Product: 

FAN9611 

 
 
 

Direct questions or comments  

about this evaluation board to: 

“Worldwide Direct Support” 

 
 

Fairchild Semiconductor.com

 

Summary of Contents for FEBFAN9611 S01U300A

Page 1: ...y ON Semiconductor Typical parameters which may be provided in ON Semiconductor data sheets and or specifications can and do vary in different applications and actual performance may vary over time Al...

Page 2: ...0 1 User Guide for FEBFAN9611_S01U300A Evaluation Board FAN9611 300W Interleaved Dual BCM Low Profile PFC Evaluation Board Featured Fairchild Product FAN9611 Direct questions or comments about this ev...

Page 3: ...Inductor Specification 10 7 Four Layer PCB and Assembly Images 11 8 Bill of Materials BOM 14 9 Inrush Current Limiting 16 10 Test Results 18 10 1 Startup 18 10 2 Steady State Operation 20 10 3 Line T...

Page 4: ...permits the use of less expensive diodes without sacrificing efficiency Furthermore the input and output filters can be smaller due to ripple current cancellation between the power trains and doublin...

Page 5: ...ctor Corporation 4 FEBFAN9611_S01U300A Rev 0 0 1 Figure 1 FEBFAN9611_S01U300A Top View 152mm x 105mm Figure 2 FEBFAN9611_S01U300A Side View Low Profile Cross Section 18mm Figure 3 FEBFAN9611_S01U300A...

Page 6: ...g OVP on FB Pin and Second Level Latching Protection on OVP Pin Open Feedback Protection Over Current and Power Limit Protection for Each Phase Low Startup Current 80 A Typical Works with DC input or...

Page 7: ...line UVLO brownout protection trip point is set at 80VAC 10VAC hysteresis The pulse by pulse current limit for each MOSFET is set at 6A The current limit function can be observed by measuring the ind...

Page 8: ...ul when probing and handling the module and observe a few precautions Start with a clean working surface clear of any conductive material Be careful while turning on the power switch to the AC source...

Page 9: ...rough the output connector J2 Power Off Procedure 1 Make sure the electronic load is set to draw at least 100mA of constant DC current 2 Disconnect shut down AC line voltage source 3 Disconnect shut d...

Page 10: ...2012 Fairchild Semiconductor Corporation 9 FEBFAN9611_S01U300A Rev 0 0 1 5 Schematic Figure 6 FEBFAN9611_S01U300A 300W Evaluation Board Schematic...

Page 11: ...rth Electronics www we online com Core EFD30 Ae 69mm2 Bobbin EFD30 Inductance 270 H Figure 7 Boost Inductor L1 L2 in the Evaluation Board Figure 8 Wurth 750340834 Mechanical Drawing Table 3 Inductor T...

Page 12: ...2012 Fairchild Semiconductor Corporation 11 FEBFAN9611_S01U300A Rev 0 0 1 7 Four Layer PCB and Assembly Images Figure 9 Layer 1 Top Layer Figure 10 Layer 2 Internal Layer...

Page 13: ...2012 Fairchild Semiconductor Corporation 12 FEBFAN9611_S01U300A Rev 0 0 1 Figure 11 Layer 3 Internal Layer Figure 12 Layer 4 Bottom Layer...

Page 14: ...2012 Fairchild Semiconductor Corporation 13 FEBFAN9611_S01U300A Rev 0 0 1 Figure 13 Top Assembly Figure 14 Bottom Assembly...

Page 15: ...5 14 1 C20 1 F CAP SMD Ceramic 50V X5R STD 805 15 1 C37 1nF CAP SMD Ceramic 25V X7R STD 805 16 3 D1 3 ES3J Diode 600V 3A Ultra Fast Recovery Fairchild Semiconductor SMC 17 2 D4 D6 S1J Diode General Pu...

Page 16: ...D 805 44 1 R19 15 4k RES SMD 1 8W STD 805 45 2 R21 22 10k RES SMD 1 8W STD 805 46 1 R25 24 9k RES SMD 1 4W STD 1206 47 2 R27 28 1 24M RES SMD 1 8W STD 805 48 3 R29 R35 36 1 2k RES SMD 1 8W STD 805 49...

Page 17: ...h circuit fully populated but disabled as shown in Figure 15 R18 and R39 are installed on the PCB purposely electrically open To enable and test the inrush current limiting circuit rotate R18 and R39...

Page 18: ...Inrush Current Limiting Circuit Effectiveness Comparison Input Line Voltage Output Power Peak Line Current Inrush Circuit Disabled Peak Line Current Inrush Circuit Enabled Inrush Current Reduction VIN...

Page 19: ...tart almost no overshoot is observed for no load startup and full load startup CH1 Gate Drive 1 Voltage 20V div CH2 COMP Voltage 2V div CH3 Output Voltage 200V div CH4 Line Current 5A div Time 100ms d...

Page 20: ...overshoot is observed for no load startup and full load startup CH1 Gate Drive 1 Voltage 20V div CH2 COMP Voltage 2V div CH3 Output Voltage 200V div CH4 Line Current 10A div Time 100ms div Figure 19 N...

Page 21: ...has relatively small ripple due to the ripple cancellation of interleaving CH3 Inductor L2 Current 5A div CH4 Inductor L1 Current 5A div CH2 Sum of Two Inductor Currents 5A div Time 2ms div zoom to 10...

Page 22: ...2 VDS Q3 100V div CH3 ZCD1 1V div CH4 Inductor L2 Current 5A div Figure 23 Zero Valley Switching at Full Load 115VAC CH1 DRV1 20V div CH2 VDS Q3 100V div CH3 ZCD1 1V div CH4 Inductor L2 Current 5A div...

Page 23: ...3 100V div CH4 Inductor L2 Current 5A div Figure 25 Zoom of Valley Switching at Full Load 230VAC CH1 FAN9611 Pin 16 100mV div CH2 FAN9611 Pin 15 100mV div CH3 Inductor L2 Current 5A div CH4 Inductor L...

Page 24: ...r L2 Current 2A div Figure 27 Inductor Current Waveforms at 360W 85VAC Over Current Operation CH1 Inductor L1 Current 5A div CH2 Inductor L2 Current 5A div CH3 Output Voltage 100V div CH4 Line Current...

Page 25: ...rom 115VAC to 230VAC about 6V 1 5 of nominal output voltage voltage overshoot is observed CH1 Rectified Line Voltage 200V div CH2 Output Voltage 20V div AC CH3 COMP Voltage 2V div CH4 Line Current 5A...

Page 26: ...output voltage voltage undershoot is observed CH1 Rectified Line Voltage 100V div CH2 Output Voltage 20V div AC CH3 COMP Voltage 2V div CH4 Line Current 5A div Time 50ms div Figure 31 Load Transient...

Page 27: ...Current 5A div Time 50ms div Figure 33 Load Transient Response at 230VAC Full Load No Load CH1 Rectified Line Voltage 100V div CH2 Output Voltage 20V div AC CH3 COMP Voltage 5V div CH4 Line Current 5...

Page 28: ...ation while slowly decreasing the line voltage The power supply shuts down when the line voltage reaches around 80VAC CH1 Line Voltage 100V div CH2 Gate Drive 1 Voltage 10V div CH4 Line Current 5A div...

Page 29: ...to minimize the line current glitch and guarantee smooth transient CH1 Gate Drive 1 Voltage 20V div CH2 Gate Drive 2 Voltage 20V div CH3 Inductor L1 Current 1A div CH4 Inductor L2 Current 1A div Time...

Page 30: ...first pulse of gate drive 2 during the phase adding operation is skipped to ensure 180 out of phase interleaving operation during transient CH1 Gate Drive 1 Voltage 20V div CH2 Gate Drive 2 Voltage 2...

Page 31: ...t 230VAC where switching losses dominate Relatively less improvement is obtained at 115VAC since the MOSFET is turned on with zero voltage and switching losses are negligible The efficiency measuremen...

Page 32: ...board is configured with RMOT 60 4k which sets the maximum output power limit to about 360W Because of the highly optimized low profile cross section of this design the EFD30 inductors are not rated t...

Page 33: ...C and 230VAC As observed high power factor above 0 95 is obtained from 100 to 50 load Figure 50 shows the total harmonic distortion at input voltages of 115VAC and 230VAC 0 0 2 0 4 0 6 0 8 1 1 2 3 5 7...

Page 34: ...0 50 60 70 80 90 100 EN55022Q EN55022A 150 kHz 30 MHz 1 PK MAXH 2 AV MAXH TDF 6DB dB V dB V RBW 9 kHz MT 10 ms PREAMP OFF Att 10 dB PRN 1 MHz 10 MHz 0 10 20 30 40 50 60 70 80 90 100 EN55022Q EN55022A...

Page 35: ...to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user 2 A critical component is any comp...

Page 36: ...the rights of others ON Semiconductor products are not designed intended or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices wit...

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