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© 2015 Fairchild Semiconductor Corporation 

28 

FEBFAN7688SJXA_CP14U306  

•  Rev. 1.1 

10.

 

Revision History 

Rev. 

Date 

Description 

1.0.0 

May 2015 

Initial release 

1.1 

September 2015  Correct Output power, page 4 306 kW to 306 W 

 

 

 

 

 

 

 

 

 

 

 

 

 

WARNING AND DISCLAIMER 

Replace  components  on  the  Evaluation  Board  only  with  those  parts  shown  on  the  parts  list  (or  Bill  of 

Materials)  in  the  Users’  Guide.  Contact  an 

authorized Fairchild representative with any questions. 

This  board  is  intended  to  be  used  by  certified  professionals,  in  a  lab  environment,  following  proper  safety  procedures.  Use  at  your  own  risk.  The 
Evaluation 

board (or kit) is for demonstration purposes only and neither the Board nor this User’s Guide constitute a sales contract or create any kind 

of warranty, whether express or implied, as to the applications or products involved. Fairchild warrantees that its 

products meet Fairchild’s published 

specifications, but does not guarantee that its products work in any specific application. Fairchild reserves the right to make changes without notice to 
any  products  described  herein  to  improve  reliability,  function,  or  design.  Either  the  applicable  sales  contract  signed  by  Fairchild  and  Buyer  or,  if  no 
contract exists, Fairchild’s standard Terms and Conditions on the back of Fairchild invoices, govern the terms of sale of the products described herein.  

DISCLAIMER  

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO  MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO 
IMPROVE  RELIABILITY,  FUNCTION,  OR  DESIGN.  FAIRCHILD  DOES  NOT  ASSUME  ANY  LIABILITY  ARISING  OUT  OF  THE  APPLICATION  OR 
USE  OF  ANY  PRODUCT  OR  CIRCUIT  DESCRIBED  HEREIN;  NEITHER  DOES  IT  CONVEY  ANY  LICENSE  UNDER  ITS  PATENT  RIGHTS,  NOR 
THE RIGHTS OF OTHERS. 

LIFE SUPPORT POLICY  

FAIRCHILD’S  PRODUCTS  ARE  NOT  AUTHORIZED  FOR  USE  AS  CRITICAL  COMPONENTS  IN  LIFE  SUPPORT  DEVICES  OR  SYSTEMS 
WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION.  

As used herein: 

1.  Life support devices or systems are devices or systems which, (a) 

are intended for surgical implant into the body, or (b) support or 
sustain life, or (c) whose failure 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 component of a life support device or 

system whose failure to perform can be reasonably expected to 
cause the failure of the life support device or system, or to affect its 
safety or effectiveness. 

ANTI-COUNTERFEITING POLICY 

Fairchild  Semiconductor  Corporation's  Anti-Counterfeiting  Policy.  Fairchild's  Anti-Counterfeiting  Policy  is  also  stated  on  our  external  website, 
www.fairchildsemi.com, under Sales Support.  

Counterfeiting  of  semiconductor  parts  is  a  growing  problem  in  the  industry.  All  manufacturers  of  semiconductor  products  are  experiencing 
counterfeiting  of  their  parts.  Customers  who  inadvertently  purchase  counterfeit  parts  experience  many  problems  such  as  loss  of  brand  reputation, 
substandard  performance,  failed  applications,  and  increased  cost  of  production  and  manufacturing  delays.  Fairchild  is  taking  strong  measures  to 
protect  ourselves  and  our  customers  from  the  proliferation  of  counterfeit  parts.  Fairchild  strongly  encourages  customers  to  purchase  Fairchild  parts 
either directly from Fairchild or from Authorized Fairchild Distributors who are listed by country on our web page cited above. Products customers buy 
either  from  Fairchild  directly  or  from  Authorized  Fairchild  Distributors  are  genuine  parts,  have  full  traceability,  meet  Fairchild's  quality  standards  for 
handling  and  storage  and  provide  access  to  Fairchild's  full  range  of  up-to-date  technical  and  product  information.  Fairchild  and  our  Authorized 
Distributors will stand behind all warranties and  will appropriately address any warranty issues that may arise. Fairchild will not provide any warranty 
coverage  or  other  assistance  for  parts  bought  from  Unauthorized  Sources.  Fairchild  is  committed  to  combat  this  global  problem  and  encourage  our 
customers to do their part in stopping this practice by buying direct or from authorized distributors. 

EXPORT COMPLIANCE STATEMENT 

These commodities, technology, or software were exported from the United States in accordance with the Export Administration Regulations for the 
ultimate destination listed on the commercial invoice. Diversion contrary to U.S. law is prohibited. 

U.S. origin products and products made with U.S. origin technology are subject to U.S Re-export laws. In the event of re-export, the user will be 
responsible to ensure the appropriate U.S. export regulations are followed. 

Summary of Contents for FEBFAN7688SJXA_CP14U306

Page 1: ...1 1 User Guide for FEBFAN7688SJXA_CP14U306 Evaluation Board 306 W 12 V PC Application with 12 VSB Module Evaluation Board Featured Fairchild Product FAN7688 Direct questions or comments about this ev...

Page 2: ...se Transformer TX2 14 7 4 Current Transformer TX4 15 7 5 PFC Inductor L3 16 7 6 12 V Standby Transformer TX3 17 7 7 EMI Choke L1 L2 18 8 Test Conditions Test Equipment 19 8 1 Features 19 9 Performance...

Page 3: ...f the power stage simplifying the feedback loop design while allowing true input power limit capability The PFC is controlled by the FAN6982 based on Continuous Conduction Mode CCM which employs leadi...

Page 4: ...ciency Eff Meet 80PLUS Platinum Input Voltage VAC 90 264 V Input Frequency 47 63 Hz PFC Output Voltage VPFC 356 V 392 V Output Voltage VOUT 12 V 100 Load 300 W 12 V Standby Output V12VSB 12 V 100 Load...

Page 5: ...2015 Fairchild Semiconductor Corporation 5 FEBFAN7688SJXA_CP14U306 Rev 1 1 4 Printed Circuit Board PCB Figure 2 Top Side of Evaluation Board Figure 3 Bottom Side of Evaluation Board...

Page 6: ...2015 Fairchild Semiconductor Corporation 6 FEBFAN7688SJXA_CP14U306 Rev 1 1 5 Schematic Figure 4 Evaluation Board Schematic...

Page 7: ...7 nF C0603 X7R 10 50 V 11 C33 C34 2 10 nF C0603 X7R 10 50 V 12 C39 1 22 nF C0603 X7R 10 50 V 13 C20 C36 C37 3 100 nF C0603 X7R 10 50 V 14 C48 1 220 nF C0603 X7R 10 50 V 15 C32 C49 2 470 nF C0603 X7R 1...

Page 8: ...6 R114 3 15 K R0603 1 45 R12 R17 R22 R32 R33 R39 R54 R57 R102 R104 R110 11 20 K R0603 1 46 R68 R101 2 24 9 K R0603 1 47 R59 R119 2 27 K R0603 1 48 R52 1 27 4 K R0603 1 49 R51 1 36 K R0603 1 50 R37 1 3...

Page 9: ...or 50 V 105 C 5 11 mm LHK HONJU 80 C29 1 220 F Electrolytic Capacitor 16 V 105 C 6 3 11 mm GF SAMXON 81 C7 1 270 F Electrolytic Capacitor 450 V 105 C 25 45 mm LP SAMXON 82 C27 1 470 F Solid Capacitor...

Page 10: ...airchild 105 U4 U6 2 FODM121C MFP 4L Fairchild 106 U5 1 KA431LZTA TO 92R Fairchild 107 U8 U9 U10 3 LM358M SO 8L Fairchild 108 L1 L2 2 SN20128A EMI Choke FORMOSA SHING GA 109 L3 1 Inductor QP2920H 420...

Page 11: ...nufacturer 126 1 Heat Shrinkable Tubing 3 15 mm 127 1 Heat Shrinkable Tubing 6 20 mm 128 3 MCH0040 Bead Core C8B 3 5 3 2 1 0 129 4 Bushing TO220 602M 130 4 Silicone Sheet TO 220 131 2 Screws 3 12 mm 1...

Page 12: ...Tape t 0 025 mm 3 Layer 3 N2 10 9 Copper foil 0 3 mm 3T W 15 mm Copper Foil to Pin 0 7 2 3 N2 N3 are the same copper foil 4 N3 9 11 12 3 5 Insulation Polyester Tape t 0 025 mm 3 Layer 6 N4 4 3 0 7 1 2...

Page 13: ...re EQ20 TP5 Bobbin 10 Pins Figure 6 Transformer Specifications of L4 Table 4 Winding Specifications No Winding Pin S F Wire Turns Winding Method 1 N1 1 5 0 1 40 24 Solenoid Winding Table 5 Electrical...

Page 14: ...Turns Winding Method 1 N1 3 5 0 2 1 15 Solenoid Winding 2 Insulation Polyester Tape t 0 025 mm 3 Layer 3 N2 9 10 0 15 1 18 Solenoid Winding Transformer Triple Wire 4 Insulation Polyester Tape t 0 025...

Page 15: ...ns of TX4 Table 8 Winding Specifications No Winding Pin S F Wire Turns Winding Method 1 N1 4 3 0 1 50 0 75 Solenoid Winding 2 Insulation Polyester Tape t 0 025 mm 3 Layer 3 N2 2 1 0 15 1 80 Solenoid W...

Page 16: ...Bobbin 4 Pins Figure 9 Transformer Specifications of L3 Table 10 Winding Specifications No Winding Pin S F Wire Turns Winding Method 1 N1 1 3 0 1 50 40 Solenoid Winding 2 Insulation Polyester Tape t...

Page 17: ...ding Transformer Triple Wire 4 Insulation Polyester Tape t 0 025 mm 2 Layer 5 N2 8 9 0 2 1 22 Solenoid Winding 6 Insulation Polyester Tape t 0 025 mm 2 Layer 7 N2 2 1 0 15 1 15 Solenoid Winding 8 Insu...

Page 18: ...2015 Fairchild Semiconductor Corporation 18 FEBFAN7688SJXA_CP14U306 Rev 1 1 7 7 EMI Choke L1 L2 Figure 11 Transformer Specifications of L1 and L2...

Page 19: ...e EXTECH 6800 AC DC Electronic Load Chroma 63030 Power Meter Chroma 6630 Oscilloscope Lecroy 24MXs B Test Items 1 Current Harmonic 2 AC Trim up Trim down 3 Efficiency 4 Output Transient Response 5 392...

Page 20: ...ause a fast response of PFC voltage loop in some test requirement it can be fine tuned to meet PF 0 95 when it is needed Test Results Figure 12 Input Current Waveform and THD Test Result in 115 VAC 75...

Page 21: ...miconductor Corporation 21 FEBFAN7688SJXA_CP14U306 Rev 1 1 Figure 14 Input Current Waveform and THD Test Result in 115 VAC 100 Load Figure 15 Input Current Waveform and THD Test Result in 230 VAC 75 W...

Page 22: ...hild Semiconductor Corporation 22 FEBFAN7688SJXA_CP14U306 Rev 1 1 Figure 16 Input Current Waveform and THD Test Result in 230 VAC Mid Load Figure 17 Input Current Waveform and THD Test Result in 230 V...

Page 23: ...Up Trim Down 9 3 Efficiency Test Condition Measure input current Power Factor PF and Total Harmonic Distortion THD Class D at various line and output loading Test Results Input Watts W Output Watts W...

Page 24: ...19 summarizes the expected output transient step sizes for each output Input 115 VAC IO 0 7 2 A or IO 4 8 12 A The transient load slew rate is 1 0 A S Test Result VIN 115 V 0 7 2 A mV 4 8 12 A mV 12V1...

Page 25: ...est Condition Load 100 Load during the AC input to change the PFC bulk voltage steps up to 390 V from 358 V or steps down to 358 V from 390 V Test Results Loading Bulk Voltage Input Voltage Loading 10...

Page 26: ...esults 115 V 0 V 115 V 230 V 0 V 230 V 100 Load 100 Load Pass Pass Ch1 12Vo Ch2 Iin Ch3 VAC Ch4 Vbulk 115 V 0 V 115 V Max Load 230 V 0 V 230 V Max Load Figure 21 Test Waveform of AC Cycle Drop 9 9 AC...

Page 27: ...R E A M P O F F A t t 1 0 d B PRN 1 M H z 1 0 M H z 0 10 20 30 40 50 60 70 80 90 100 E N 5 5 0 2 2 A E N 5 5 0 2 2 Q D a t e 1 7 M A R 2 0 1 5 1 6 3 5 1 1 1 PK CLRWR 2 AV CLRWR TDF 6DB dB V dB V 1 5...

Page 28: ...ly expected to result in significant injury to the user 2 A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the fail...

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