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PWM Controller for Power Supplies

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An Brief Study on PWM Controller for Power Supplies from Texas Instruments

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PWM Controller for Power Supplies

  1. 1. PWM Controller for Power Supplies
  2. 2. Introduction <ul><li>Purpose </li></ul><ul><ul><li>An Brief Study on PWM Controller for Power Supplies from Texas Instruments </li></ul></ul><ul><li>Outline </li></ul><ul><ul><li>Switching Converter Topologies </li></ul></ul><ul><ul><li>Buck, Boost, Flyback, Push-Pull converter </li></ul></ul><ul><ul><li>Pulse Width Modulation Technique </li></ul></ul><ul><ul><li>Current Mode Push Pull PWM controller: UCC38083/4 </li></ul></ul><ul><ul><li>Reference Design solution from UCC38083/4 </li></ul></ul><ul><ul><li>solution from Premier Farnell for PWM Controller </li></ul></ul><ul><li>Content </li></ul><ul><ul><li>18 pages </li></ul></ul>
  3. 3. Switching Converter Topologies <ul><li>Buck: used to reduce a DC voltage to a lower DC voltage. </li></ul><ul><li>Boost: provides an output voltage that is higher than the input. </li></ul><ul><li>Buck-Boost (invert): an output voltage is generated opposite in polarity to the input. </li></ul><ul><li>Flyback: an output voltage (as well as multiple outputs) lesser or greater than the input can be generated. </li></ul><ul><li>Push-Pull: A two-transistor converter that is especially efficient at low input voltages. </li></ul><ul><li>Half-Bridge: A two-transistor converter used in many off-line applications. </li></ul><ul><li>Full-Bridge: A four-transistor converter (usually used in off-line designs) that can generate the highest output power of all. </li></ul>
  4. 4. Buck Regulator Switching Buck Regulator Inductor Current
  5. 5. Boost Regulator Switching
  6. 6. Buck-Boost (Inverting) Regulator
  7. 7. Flyback Regulator Switching
  8. 8. Push-Pull Converter
  9. 9. Pulse Width Modulation (PWM) <ul><li>The series of square wave pulses is filtered and provides a DC output voltage that is equal to the peak pulse amplitude multiplied times the duty cycle </li></ul><ul><li>output voltage can be directly controlled by changing the ON time of the switch </li></ul>
  10. 10. Current Mode Push-Pull PWM Controller <ul><li>Programmable Slope Compensation </li></ul><ul><li>Internal Soft-Start on the UCC38083/4 </li></ul><ul><li>Cycle-by-Cycle Current Limiting </li></ul><ul><li>Low Start-Up Current of 120 μA and 1.5 mA Typical Run Current </li></ul><ul><li>Single External Component Oscillator </li></ul><ul><li>Programmable from 50 kHz to 1 MHz </li></ul><ul><li>High-Current Totem-Pole Dual Output Stage Drives Push-Pull Configuration with 1-A Sink and 0.5-A Source Capability </li></ul><ul><li>Current Sense Discharge Transistor to </li></ul><ul><li>Improve Dynamic Response </li></ul><ul><li>Internally Trimmed Bandgap Reference </li></ul><ul><li>Undervoltage Lockout with Hysteresis </li></ul>
  11. 11. Typical Application
  12. 12. Operational Waveforms Typical Slope Compensation Waveforms at 80% Duty Cycle
  13. 13. PWM Controller Line card Y Y Y Y   Y click click TI Y Y Y Y   Y click click ST         Y   click click Power Integrations Y   Y Y Y Y click click OnSemi     Y     Y click click National Y Y Y Y Y Y click click Fairchild Pull- Push Full- Bridge Half- Bridge For ward Flyback with MOSFET Fly back Newark Farnell Supplies Topology      
  14. 14. PWM Controller Selection Guide click click click click click click click click   click click TI           click click   click click ST               click click     Power Integrations click click   click click click click click click OnSemi       click click       click click National click click   click   click   click click click   Fairchild New- ark Far- nell New- ark Far- nell New- ark Far- nell New- ark Farn- ell New- ark Farn -ell New -ark Far -nell   Pull-Push Full-Bridge Half-Bridge Forward Flyback with MOSFET Flyback Supplies Topology  
  15. 15. Evaluation Kits NCP1215 click NCP1215 5 W ADAPTER EVB Onsemi NCP1271 Click NCP1271 57 W Adapter Evaluation Board Onsemi NCP1013 Click NCP1013 6/12 W Adapter Evaluation Board Onsemi NCP1207 Click NCP1207AADAPGEVB Onsemi NCP1203 Click NCP1203GEVB Onsemi LM5073 Click Application Note 1574 LM5073 Evaluation Board National LM5026 Click Application Note 1387 LM5026 Evaluation Board National LM5020 Click Application Note 1314 LM5020 Evaluation Board National FSFR2100 Click FEB212 Evaluation Board Featuring FSFR2100, Fairchild Power Switch for Half-Bridge Resonant Converters Fairchild Part Number URL Evaluation Kits Title Manufacturer
  16. 16. Application Notes UCC2895 http://www.ti.com/litv/pdf/slua501 Apr/09 UCC2895 Layout and Grounding Recommendations TI UCC25600 http://www.ti.com/litv/pdf/sluu341b Dec/08 A 300-W, Universal Input, Isolated PFC Power Supply for LCD TV Applications TI UCC38C42 http://www.ti.com/litv/pdf/slua257 Feb/02 UCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers TI TOP259 http://www.powerint.com/sites/default/files/PDFFiles/di182.pdf Jul/08 65 W Notebook Adapter PI TOP261 http://www.powerint.com/sites/default/files/PDFFiles/di196.pdf Jun/09 Ultra-low Profile 65 W Notebook Adapter PI TOP246Y http://www.powerint.com/sites/default/files/PDFFiles/epr13.pdf May/01 43 W / 57 W (peak), 5 Output Power Supply PI TNY376 http://www.powerint.com/sites/default/files/PDFFiles/di115.pdf Nov/07 7.5 W (13 W peak) Multiple Output STB Power Supply PI TOP257 http://www.powerint.com/sites/default/files/PDFFiles/di162.pdf Nov/07 30 W Set-top Box Power Supply PI NCP101x http://www.onsemi.com/pub/Collateral/AND8134-D.PDF Oct/03 Designing Converters with the NCP101X Family Onsemi NCP1200 http://www.onsemi.com/pub/Collateral/AND8042-D.PDF Feb/01 Implementing Constant Current Constant Voltage AC Adapter by NCP1200 and NCP4300A Onsemi NCP120x http://www.onsemi.com/pub/Collateral/AND8076-D.PDF Apr/03 A 70 W Low Standby Power Supply w/NCP120x Series Onsemi NCP1200 http://www.onsemi.com/pub/Collateral/AND8069-D.PDF May/03 Tips and Tricks to Build Efficient Circuits with NCP1200 Onsemi NCP1219 http://www.onsemi.com/pub/Collateral/AND8393-D.PDF Jul/09 48 W, 24 V/7.5 V Universal Input AC-DC Printer Adapter Using the NCP1219 Onsemi FAN6791 http://www.fairchildsemi.com/an/AN/AN-6083.pdf Mar/09 AN-6083: FAN6791- Highly Integrated, Dual-PWM Combination Controller Farichild FAN6753 http://www.fairchildsemi.com/an/AN/AN-6753.pdf Jul/09 AN-6753: FAN6753 ? Highly Integrated Green-Mode PWM Controller Farichild FAN7602 http://www.fairchildsemi.com/an/AN/AN-6014.pdf Jul/09 AN-6014: AN-6014 Green Current Mode PWM Controller FAN7602 Farichild FAN7601 http://www.fairchildsemi.com/an/AN/AN-4129.pdf Jul/09 AN-4129: Green Current Mode PWM Controller FAN7601 Farichild Part Number URL Date Published AN Title Manuf -acturer
  17. 17. Reference Design UCC3809 click Mar/09 19 Watt AC Input LED Driver Reference Design TI   Click Aug/06 DAK-54 LinkSwitch PI LNK564 Click Jul/06 RDK-83 LinkSwitch-LP PI LNK613 Click Jan/09 RDK-160 LinkSwitch-II PI LNK626 Click Jan/09 RDK-201 LinkSwitch-CV PI   Click Feb/07 RDK-203 PeakSwitch PI NCP1014 Click Feb/08 5 W CCCV AC-DC Adapter GreenPoint® Reference Design Onsemi NCP1562 Click Feb/08 200 W Game Console AC-DC Adapter GreenPoint® Reference Design Onsemi FSFR2100 Click Jul/07 200W Power Supply For LED Lighting featuring FSFR2100 and FAN6961. View App Note. Farichild SG6859 Click Nov/07 10W High Performance Fly-back Converter Module. Featuring SG6859. View App Note. Farichild SG5851 Click Nov/07 Reference Design Featuring SG5851, the Green Mode PWM Controller. Featuring SG5851. Farichild FSQ0765 Click Sep/07 Green-Mode Fairchld Power Switch for Quasi- Resonant Operation. Featuring FSQ0765RQ. Farichild FSQ0565R Click Oct/07 Green-Mode Fairchld Power Switch for Quasi- Resonant Operation. Featuring FSQ0565RQ, KA431A and FOD817A. Farichild Part Number URL Date Published Reference Design Title Manufacturer
  18. 18. Additional Resource <ul><li>For ordering PWM Controller , please click the part list or </li></ul><ul><li>Call our sales hotline </li></ul><ul><li>For more product information go to </li></ul><ul><ul><li>Click Here </li></ul></ul><ul><li>Visit element14 to post your question </li></ul><ul><ul><li> www.element-14.com </li></ul></ul><ul><li>For additional inquires contact our technical service hotline or even use our “Live Technical Chat” online facility </li></ul>