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AC/DC 和 DC/DC 控制器 (外部 FET)

UCC28722

現行

適用於雙極電源產品且具有一次側穩壓功能的低成本 CVCC 返馳控制器

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產品規格表

UCC28722

現行
產品規格表 立即訂購

產品詳細資料

Operating temperature range (°C) -40 to 125 Control mode Primary-side regulation Topology Buck, Flyback Rating Catalog Features CC/CV output regulation, Cable compensation, DCM, Low power, Overcurrent protection, Primary-side regulated, Quasi-Resonant, Soft start Duty cycle (max) (%) 99
Operating temperature range (°C) -40 to 125 Control mode Primary-side regulation Topology Buck, Flyback Rating Catalog Features CC/CV output regulation, Cable compensation, DCM, Low power, Overcurrent protection, Primary-side regulated, Quasi-Resonant, Soft start Duty cycle (max) (%) 99
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • < 50-mW No-Load Power
  • Primary-Side Regulation (PSR) Eliminates Opto-
    Coupler
  • Dynamic BJT Drive
  • ± 5% Voltage and Current Regulation Across Line
    and Load
  • 80-kHz Maximum Switching Frequency Enables
    High-Power Density Charger Designs
  • Quasi-Resonant Valley-Switching Operation for
    Highest Overall Efficiency
  • Wide VDD Range Allows Small Bias Capacitor
  • Output Overvoltage, Low-Line, and Overcurrent
    Protection Functions
  • Programmable Cable Compensation
  • SOT23-6 Package
  • < 50-mW No-Load Power
  • Primary-Side Regulation (PSR) Eliminates Opto-
    Coupler
  • Dynamic BJT Drive
  • ± 5% Voltage and Current Regulation Across Line
    and Load
  • 80-kHz Maximum Switching Frequency Enables
    High-Power Density Charger Designs
  • Quasi-Resonant Valley-Switching Operation for
    Highest Overall Efficiency
  • Wide VDD Range Allows Small Bias Capacitor
  • Output Overvoltage, Low-Line, and Overcurrent
    Protection Functions
  • Programmable Cable Compensation
  • SOT23-6 Package

The UCC28722 flyback power supply controller provides isolated-output constant-voltage (CV) and constant-current (CC) output regulation without the use of an optical coupler. The device processes information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current.

Dynamically-controlled operating states and a tailored modulation profile support high-efficiency operation at all load levels without sacrificing output transient response.

Control algorithms in the UCC28722 device allow operating efficiencies to meet or exceed applicable standards. The output drive interfaces to a bipolar transistor power switch, enabling lower-cost converter design. Discontinuous conduction mode (DCM) with valley switching reduces switching losses, while modulation of switching frequency and primary current peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges.

The controller has a maximum switching frequency of 80 kHz and always maintains control of the peak-primary current in the transformer. Output overvoltage and overcurrent as well as input undervoltage protection features help keep primary and secondary component stresses in check. The UCC28722 also allows compensation for voltage drop in the cable to be programmed with an external resistor.

The UCC28722 flyback power supply controller provides isolated-output constant-voltage (CV) and constant-current (CC) output regulation without the use of an optical coupler. The device processes information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current.

Dynamically-controlled operating states and a tailored modulation profile support high-efficiency operation at all load levels without sacrificing output transient response.

Control algorithms in the UCC28722 device allow operating efficiencies to meet or exceed applicable standards. The output drive interfaces to a bipolar transistor power switch, enabling lower-cost converter design. Discontinuous conduction mode (DCM) with valley switching reduces switching losses, while modulation of switching frequency and primary current peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges.

The controller has a maximum switching frequency of 80 kHz and always maintains control of the peak-primary current in the transformer. Output overvoltage and overcurrent as well as input undervoltage protection features help keep primary and secondary component stresses in check. The UCC28722 also allows compensation for voltage drop in the cable to be programmed with an external resistor.
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類型 標題 日期
* Data sheet UCC28722 Constant-Voltage, Constant-Current Controller With Primary-Side Regulation, BJT Drive datasheet (Rev. B) PDF | HTML 2015年 10月 30日
Application note Flyback Aux Winding OVP and UVLO Fault Sensing Design and Troubleshooting Tips PDF | HTML 2021年 8月 31日
Application note Common-Mode-Chokeless Bias Supply Reference Design Example 2020年 1月 2日
Application note Minimize Standby Consumption for UCC287XX Family 2019年 8月 1日
Application note Selecting Electrolitic Bus Capacitor for Universal Input 2018年 7月 17日
Application note Maximum Output Power and Thermal Considerations for UCC28720 and UCC28722 2017年 12月 6日
Application note AC-DC Non-Isolated SMPS for Single-Phase Smart Meters Based on UCC28722 (Rev. A) 2017年 11月 2日
Technical article Making smart meter eFuses robust and reliable PDF | HTML 2017年 6月 28日
Technical article Powering the IoT PDF | HTML 2017年 1月 26日
Application note Troubleshooting TI PSR controllers 2016年 10月 3日
Technical article Solving the biggest challenges when designing smart meter power supplies PDF | HTML 2016年 9月 6日
Application note UCC28722, Bias Supply Design Considerations for Intelligent eMeter Applications 2016年 8月 5日
Technical article Slim down your flyback; lose that excess snubber PDF | HTML 2016年 2月 15日
Application note Versatile Buck-Boost driver based on UCC28722 for 5W-9W LED Bulb 2015年 12月 8日
White paper Control Challenges for Low Power AC/DC Converters 2015年 10月 2日
White paper Control Challenges for Low Power AC/DC Converters (PPT) 2015年 10月 2日
Technical article Designing multiple output converters with primary side sensing PDF | HTML 2015年 8月 4日
Application note 5-W USB Flyback Design Example Using the UCC28722 2014年 1月 8日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

UCC28720EVM-212 — 適用於 USB 離線適配器的 UCC28720EVM-212 5W 評估模組

The UCC28720EVM-212 is a 5W evaluation module for evaluating an off line adapter for USB applications. It is intended for evaluation purposes and is not intended to be an end product. The UCC28720EVM-212 converters 100V to 240V RMS input voltage down to 5V DC, with a 1A current limit for USB (...)
使用指南: PDF
TI.com 無法提供
模擬型號

UCC28722 Unencrypted PSpice Transient Model Package (Rev. A)

SLUM466A.ZIP (64 KB) - PSpice Model
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計算工具

SLUC528 — UCC28722 MathCad Design Tool

支援產品和硬體

支援產品和硬體

產品
AC/DC 和 DC/DC 控制器 (外部 FET)
UCC28720 — 具一次側調節的定電壓、定電流控制器，適合雙極電源裝置 UCC28722 — 適用於雙極電源產品且具有一次側穩壓功能的低成本 CVCC 返馳控制器
下載
計算工具

SLUC529 — UCC28722 Excel Design Tool

支援產品和硬體

支援產品和硬體

產品
AC/DC 和 DC/DC 控制器 (外部 FET)
UCC28720 — 具一次側調節的定電壓、定電流控制器，適合雙極電源裝置 UCC28722 — 適用於雙極電源產品且具有一次側穩壓功能的低成本 CVCC 返馳控制器
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參考設計

PMP10236 — 85V 至 440V AC 主電源、5V@300mA 和 15V@100mA 雙路輸出隔離式返馳參考設計

This is an isolated quasi-resonant flyback converter, supplying 5 V at 300 mA and 15 V at 100 mA; both outputs are isolated from each other. The UCC28722 has been chosen to drive a low-cost high-voltage BJT transistor.
Test report: PDF
電路圖: PDF
參考設計

PMP10397 — 具有 PSR 控制和 BJT 的超寬輸入範圍、雙路輸出、AC/DC 偏壓電源供應參考設計

此設計採用低成本一次側穩壓 (PSR) IC UCC28722 與雙極電晶體，適合超寬輸入範圍應用 (85VAC 至 528VAC)。產生兩個具有獨立接地的輸出，即 5V/0.3A 和 16.5V/0.1A。
Test report: PDF
電路圖: PDF
參考設計

PMP30281 — 85-VAC - 480-VAC 輸入、多輸出返馳參考設計

This offline flyback reference design uses the UCC28722 controller to generate 2 isolated outputs (5 V at 400 mA, 24 V at 300 mA) from an AC input (85 VAC - 480 VAC). The UCC28722 output drive interfaces to a bipolar transistor power switch, enabling a more efficient design than a typical design. (...)
Test report: PDF
電路圖: PDF
參考設計

PMP7668 — 寬輸入 2W 偏壓電源供應參考設計

此參考設計為 2W 偏壓電源供應器，適合需在廣泛的輸入範圍 (110 - 500VAC) 中運作的應用。此設計的精巧外型 (69mm x 26mm) 及高效率，最適合電子量測應用。此設計中提供的資訊可提供如效率、輸出漣波、啟動和切換應力等重要測試資料，進而縮短上市時間。此外，TI 已針對此設計進行排放測試，確保其超出 EN55022 B 類限制。
Test report: PDF
電路圖: PDF
參考設計

PMP11062 — 通用 AC 輸入、380V/1kW CCM 升壓功率因素穩壓器參考設計

The PMP11062 reference design uses the UCC28180 CCM PFC controller to generate a 380V/1kW output from a universal AC input. In addition to that, the UCC28722  PSR controller is used as bias supply in this design. Over 96% peak efficiency is achieved at  120VAC/60Hz input and over 98% (...)
Test report: PDF
電路圖: PDF
參考設計

PMP11211 — 通用 AC 輸入、200 kHz 380V/1kW CCM 升壓功率因素穩壓器參考設計

The PMP11211 reference design uses the UCC28180 CCM PFC controller to generate a 380V/1kW output from a universal AC input. In addition to that, the UCC28722  PSR controller is used as bias supply in this design. Over 94% peak efficiency is achieved at  120VAC/60Hz input and over 97% (...)
Test report: PDF
電路圖: PDF
參考設計

PMP12074 — 230V AC 輸入、200 kHz 380V/1kW CCM 升壓功率因素穩壓器參考設計

The PMP12074 reference design uses the UCC28180 CCM PFC controller to generate a 380V/1kW output from a 230VAC input. In addition to that, the UCC28722  PSR controller is used as bias supply in this design. Over 97% efficiency is achieved at 230VAC/50Hz input with fixed 200kHz switching (...)
Test report: PDF
電路圖: PDF
參考設計

TIDA-00583 — 適用於針對低 AC 線路輸入最佳化之電錶應用的 5V/1.6A 與 12V/10mA AC/DC 返馳 PSU 參考設計

The TIDA-00583 is a Flyback converter which can operate in very low AC line input (Minimum 45Vac) and provide a regulated, fully-isolated 5V@1.6A output for communication model of E-meter, as well as another low-power 12V non-isolated output. Featuring TIs UCC28722 PSR controller which provides (...)
Test report: PDF
電路圖: PDF
參考設計

TIDA-00628 — 具有簡化變壓器的無緩衝器非隔離式 AC/DC 返馳式轉換器參考設計

TIDA-00628 is a 15V/6.5W non-isolated, single output, AC/DC Flyback power supply that is capable of operating from wide input voltage ranging from 85Vac to 440Vac. This design demonstrates 2 key features (1) the elimination of snubber components enabled by use of a high-voltage bipolar transistor (...)
Design guide: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-23 (DBV) 6 Ultra Librarian
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