Texas Instruments UCC28780EVM-021 User Manual
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Texas Instruments UCC28780EVM-021 User Manual

45-w, 20-v highdensity silicon (si) based, active-clamp flyback converter/evaluation module
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Using the UCC28780EVM-021, 45-W, 20-V High-
Density Silicon (Si) Based, Active-Clamp
Flyback Converter/Evaluation Module
User's Guide
Literature Number: SLUUBV6
August 2018

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Summary of Contents for Texas Instruments UCC28780EVM-021

  • Page 1 Using the UCC28780EVM-021, 45-W, 20-V High- Density Silicon (Si) Based, Active-Clamp Flyback Converter/Evaluation Module User's Guide Literature Number: SLUUBV6 August 2018...
  • Page 2 Any other use and/or application are strictly prohibited by Texas Instruments. If you are not suitable qualified, you should immediately stop from further use of the HV EVM.
  • Page 3 Converter/Evaluation Module Description The UCC28780EVM-021 is a 45-W evaluation module (EVM) for evaluating an off-line active-clamp flyback adapter for notebook charging and other applications. The EVM meets CoC Tier 2 and DoE Level 6 efficiency requirements. It is intended for evaluation purposes and is not intended to be an end product.
  • Page 4 Description www.ti.com Figure 2. UCC28780EVM-021 Bottom View Using the UCC28780EVM-021, 45-W, 20-V High-Density Silicon (Si) Based, SLUUBV6 – August 2018 Active-Clamp Flyback Converter/Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...

  • Page 5: Electrical Performance Specifications

    Average efficiency of four load points, I = 25%, 50%, 75% and 100% nom. SLUUBV6 – August 2018 Using the UCC28780EVM-021, 45-W, 20-V High-Density Silicon (Si) Based, Active-Clamp Flyback Converter/Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...

  • Page 6: Schematic Diagram

    Schematic Diagram www.ti.com Schematic Diagram Figure 3. UCC28780EVM-021 Schematic Diagram Using the UCC28780EVM-021, 45-W, 20-V High-Density Silicon (Si) Based, SLUUBV6 – August 2018 Active-Clamp Flyback Converter/Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...

  • Page 7: Test Setup

    Recommended Wire Gauge: Insulated 22 AWG to 18 AWG. WARNING Caution: Do not leave EVM powered when unattended SLUUBV6 – August 2018 Using the UCC28780EVM-021, 45-W, 20-V High-Density Silicon (Si) Based, Active-Clamp Flyback Converter/Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...

  • Page 8: Test Setup Diagram

    AC neutral input Location J2 Terminal VOUT + Output supply VOUT – Output return Using the UCC28780EVM-021, 45-W, 20-V High-Density Silicon (Si) Based, SLUUBV6 – August 2018 Active-Clamp Flyback Converter/Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...

  • Page 9: Performance Data And Typical Characteristic Curves

    Efficiency Typical Results Figure 5. Efficiency Over Load Figure 6. Efficiency Over Input Voltage SLUUBV6 – August 2018 Using the UCC28780EVM-021, 45-W, 20-V High-Density Silicon (Si) Based, Active-Clamp Flyback Converter/Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...

  • Page 10: Switching Frequency

    67% to 100% 58% to 71% 6.7% to 8% 2.2% to 6.7% < 3.5% Using the UCC28780EVM-021, 45-W, 20-V High-Density Silicon (Si) Based, SLUUBV6 – August 2018 Active-Clamp Flyback Converter/Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...
  • Page 11 2 packets is > 40 µs. CH3 = PWML, CH4 = PWML, CH4 = Transformer primary winding current.) Transformer primary winding current.) SLUUBV6 – August 2018 Using the UCC28780EVM-021, 45-W, 20-V High-Density Silicon (Si) Based, Active-Clamp Flyback Converter/Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...

  • Page 12: Line Transient Response

    Figure 19. Output Voltage Response to Line Transient with Figure 20. Output Voltage Response to Line Transient with Full Load. No Load. Using the UCC28780EVM-021, 45-W, 20-V High-Density Silicon (Si) Based, SLUUBV6 – August 2018 Active-Clamp Flyback Converter/Evaluation Module Submit Documentation Feedback...
  • Page 13 = 0 A Figure 26. V = 24.3mV, V = 230V = 0 A OUT_pp OUT_pp SLUUBV6 – August 2018 Using the UCC28780EVM-021, 45-W, 20-V High-Density Silicon (Si) Based, Active-Clamp Flyback Converter/Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...

  • Page 14: Over Power Protection

    Figure 28. OPP Auto Retry (CH1 = PWML, CH2 = Switch Figure 27. OPP with Respect to Input Voltage Node Voltage, CH3 = Transformer Primary Current) Using the UCC28780EVM-021, 45-W, 20-V High-Density Silicon (Si) Based, SLUUBV6 – August 2018 Active-Clamp Flyback Converter/Evaluation Module Submit Documentation Feedback Copyright ©...

  • Page 15: Load Transient Response

    Figure 32. Load Step-Down (2.25A to 0A) Figure 31. Load Transient Step-Up (0A to 2.25A) SLUUBV6 – August 2018 Using the UCC28780EVM-021, 45-W, 20-V High-Density Silicon (Si) Based, Active-Clamp Flyback Converter/Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...
  • Page 16 NOTE: Please note this was evaluated on an EMI station for pre-qualification purpose only. It is recommended that all final designs be verified by an agency qualified EMI test house. Using the UCC28780EVM-021, 45-W, 20-V High-Density Silicon (Si) Based, SLUUBV6 – August 2018...
  • Page 17 , Top Side (Transformer: 66 °C) Figure 40. V = 230 V , Bottom Side (Q1: 76 °C) SLUUBV6 – August 2018 Using the UCC28780EVM-021, 45-W, 20-V High-Density Silicon (Si) Based, Active-Clamp Flyback Converter/Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...
  • Page 18 , Top Side (Transformer: 69 °C) Figure 42. V = 265 V , Bottom Side (Q1: 79 °C) Using the UCC28780EVM-021, 45-W, 20-V High-Density Silicon (Si) Based, SLUUBV6 – August 2018 Active-Clamp Flyback Converter/Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...
  • Page 19 P1, S1 to Core 1 mA, 60 Hz, 1 s Turns ratio 1:0.19:0.14:0.1 (P1-P2):(S1-S2):(Pa1-Pa2):(Sa1-Sa2) SLUUBV6 – August 2018 Using the UCC28780EVM-021, 45-W, 20-V High-Density Silicon (Si) Based, Active-Clamp Flyback Converter/Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...

  • Page 20: List Of Materials

    List of Materials www.ti.com List of Materials UCC28780EVM-021 (secondary resonance approach as default) list of materials for the schematic diagram shown in Figure Table 6. UCC28780EVM-021 List of Materials DESCRIPTION PART NUMBER MANUFACTURER C1, C2 Capacitor, aluminum, 39 µF, 400 V, ±20%, AEC-...
  • Page 21 Resistor, 47.5 kΩ, 1%, 0.063 W, AEC-Q200 Grade 0, CRCW040247K5FKE Vishay-Dale 0402 Resistor, 2.49 Ω, 1%, 0.1 W, 0603 RC0603FR-072R49L Yageo SLUUBV6 – August 2018 Using the UCC28780EVM-021, 45-W, 20-V High-Density Silicon (Si) Based, Active-Clamp Flyback Converter/Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...
  • Page 22 Peak Output and RobustDrive, D0008A (SOIC-8) Active-Clamp Flyback Controller, RTE0016C UCC28780RTER Texas Instruments (WQFN-16) Using the UCC28780EVM-021, 45-W, 20-V High-Density Silicon (Si) Based, SLUUBV6 – August 2018 Active-Clamp Flyback Converter/Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...
  • Page 23 STANDARD TERMS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms set forth herein.
  • Page 24 FCC Interference Statement for Class B EVM devices NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
  • Page 25 【無線電波を送信する製品の開発キットをお使いになる際の注意事項】 開発キットの中には技術基準適合証明を受けて いないものがあります。 技術適合証明を受けていないもののご使用に際しては、電波法遵守のため、以下のいずれかの 措置を取っていただく必要がありますのでご注意ください。 1. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用 いただく。 2. 実験局の免許を取得後ご使用いただく。 3. 技術基準適合証明を取得後ご使用いただく。 なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。 上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。 日本テキサス・イ ンスツルメンツ株式会社 東京都新宿区西新宿６丁目２４番１号 西新宿三井ビル 3.3.3 Notice for EVMs for Power Line Communication: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page 電力線搬送波通信についての開発キットをお使いになる際の注意事項については、次のところをご覧ください。http:/ /www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page 3.4 European Union 3.4.1 For EVMs subject to EU Directive 2014/30/EU (Electromagnetic Compatibility Directive): This is a class A product intended for use in environments other than domestic environments that are connected to a low-voltage power-supply network that supplies buildings used for domestic purposes.
  • Page 26 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2018, Texas Instruments Incorporated...
  • Page 27 IMPORTANT NOTICE FOR TI DESIGN INFORMATION AND RESOURCES Texas Instruments Incorporated (‘TI”) technical, application or other design advice, services or information, including, but not limited to, reference designs and materials relating to evaluation modules, (collectively, “TI Resources”) are intended to assist designers who are developing applications that incorporate TI products;...
  • Page 28 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments UCC28780EVM-021...

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