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AC/DC & DC/DC controllers (external FET)

UCC28780

現行

1-MHz 高頻率主動鉗位返馳控制器

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產品規格表

UCC28780

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 Secondary-side regulation Topology Flyback Rating Catalog Duty cycle (max) (%) 99
Operating temperature range (°C) -40 to 125 Control mode Secondary-side regulation Topology Flyback Rating Catalog Duty cycle (max) (%) 99
SOIC (D) 16 59.4 mm² 9.9 x 6 WQFN (RTE) 16 9 mm² 3 x 3
  • Full and Partial Zero Voltage Switching (ZVS) of Primary FET with Adaptive Control
  • Programmable Timing for External Si or GaN FETs
  • High Switching Frequency up to 1 MHz
  • Programmable Adaptive Burst Control and Standby Mode for Light-Load Efficiency with Low Output Ripple and Audible Noise Mitigation
  • Brownout Detection without Direct Line Sensing
  • Accurate Programmable Over-Power Protection (OPP) to Support Peak Power Mode
  • Fault Protections: Over-Temperature, Output Over-Voltage, Output Short-Circuit, Over-Current, and Pin Fault
  • Direct Interface with Optocoupler Based Feedback Allows for Dynamically Scalable Output Voltage
  • Internal Soft Start
  • NTC Thermistor Interface with External Enable
  • Full and Partial Zero Voltage Switching (ZVS) of Primary FET with Adaptive Control
  • Programmable Timing for External Si or GaN FETs
  • High Switching Frequency up to 1 MHz
  • Programmable Adaptive Burst Control and Standby Mode for Light-Load Efficiency with Low Output Ripple and Audible Noise Mitigation
  • Brownout Detection without Direct Line Sensing
  • Accurate Programmable Over-Power Protection (OPP) to Support Peak Power Mode
  • Fault Protections: Over-Temperature, Output Over-Voltage, Output Short-Circuit, Over-Current, and Pin Fault
  • Direct Interface with Optocoupler Based Feedback Allows for Dynamically Scalable Output Voltage
  • Internal Soft Start
  • NTC Thermistor Interface with External Enable

UCC28780 is a high-frequency active-clamp flyback controller that enables high-density AC-to-DC power supplies that comply with stringent global efficiency standards such as DoE Level VI and EU CoC V5 Tier-2. User programmable advanced control law features allow performance to be optimized for both Silicon (Si) and Gallium Nitride (GaN) power FETs. Direct operation with switching devices that combine driver and GaN FETs is further enhanced with logic-level gate signals and enable outputs.

Zero voltage switching (ZVS) is achieved over a wide operating range with advanced auto-tuning techniques, adaptive dead-time optimization, and variable switching frequency control law. Using adaptive multimode control that changes the operation based on input and output conditions, UCC28780 enables high efficiency while mitigating audible noise. With a variable switching frequency of up to 1 MHz and accurate programmable over-power protection, which provides consistent power for thermal design across wide line range, the size of passive components can be further reduced and enable high power density.

UCC28780 works with VDS-sensing synchronous rectifier controllers, such as UCC24612, to achieve higher conversion efficiency and very compact designs.

UCC28780 is a high-frequency active-clamp flyback controller that enables high-density AC-to-DC power supplies that comply with stringent global efficiency standards such as DoE Level VI and EU CoC V5 Tier-2. User programmable advanced control law features allow performance to be optimized for both Silicon (Si) and Gallium Nitride (GaN) power FETs. Direct operation with switching devices that combine driver and GaN FETs is further enhanced with logic-level gate signals and enable outputs.

Zero voltage switching (ZVS) is achieved over a wide operating range with advanced auto-tuning techniques, adaptive dead-time optimization, and variable switching frequency control law. Using adaptive multimode control that changes the operation based on input and output conditions, UCC28780 enables high efficiency while mitigating audible noise. With a variable switching frequency of up to 1 MHz and accurate programmable over-power protection, which provides consistent power for thermal design across wide line range, the size of passive components can be further reduced and enable high power density.

UCC28780 works with VDS-sensing synchronous rectifier controllers, such as UCC24612, to achieve higher conversion efficiency and very compact designs.
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類型 標題 日期
* Data sheet UCC28780 High Frequency Active Clamp Flyback Controller datasheet (Rev. A) PDF | HTML 2018年 2月 22日
Technical article 如何以非耗散箝位提升返馳效率 PDF | HTML 2024年 3月 13日
Analog Design Journal Transformer structures that achieve low EMI with low- and high-side rectifiers 2020年 9月 22日
Application note Zero-Voltage-Switching Flyback Using UCC28780 Controller and UCC5304 Isolated Sy 2020年 7月 30日
Application note Minimize Standby Consumption for UCC287XX Family 2019年 8月 1日
Application note Debugging UCC28780 ACF Converter Start-up Issues 2019年 7月 15日
Technical article Gain ultra-high power density for 100-W USB Power Delivery adapters PDF | HTML 2019年 3月 5日
Technical article Searching for the newest innovations in power? Find them at APEC PDF | HTML 2019年 2月 9日
Application note Selecting Electrolitic Bus Capacitor for Universal Input 2018年 7月 17日
EVM User's guide Using the UCC28780EVM-021 2018年 5月 15日
Technical article Measuring efficiency, the right way PDF | HTML 2018年 3月 12日
Technical article Intelligently control an active clamp flyback PDF | HTML 2018年 3月 1日
Application brief Increasing Power Density With Active Clamp Flyback (UCC28780) 2018年 2月 27日
EVM User's guide Using the UCC28780EVM-002 (Rev. A) 2018年 2月 7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

UCC28780EVM-002 — 具有 Gan FET 的 UCC28780 主動鉗位返馳 45W AC/DC EVM

The UCC28780EVM-002 demonstrates high-efficiency and high-density for a 45-W off-line adapter using the UCC28780 active-clamp flyback controller at high frequency nominal 300 kHz using GaN MOSFET Power ICs, NV6115 and NV6117.  The EVM also uses the UCC24612 synchronous rectifier controller on (...)

使用指南: PDF
TI.com 無法提供
開發板

UCC28780EVM-021 — 具有 UCC24612 和 Si MOSFET 的 UCC28780 主動鉗位反馳式轉換器 45W EVM

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 (...)

使用指南: PDF
TI.com 無法提供
模擬型號

UCC28780 GaN SIMPLIS Model

SLUM626.ZIP (393 KB) - SIMPLIS Model
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模擬型號

UCC28780 Si SIMPLIS Model

SLUM643.ZIP (406 KB) - SIMPLIS Model
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計算工具

SLUC644 — UCC28780 Mathcad Design Calculator

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支援產品和硬體

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產品
AC/DC & DC/DC controllers (external FET)
UCC28780 — 1-MHz 高頻率主動鉗位返馳控制器
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計算工具

SLUC664 — UCC28780 Excel Design Calculator

支援產品和硬體

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產品
AC/DC & DC/DC controllers (external FET)
UCC28780 — 1-MHz 高頻率主動鉗位返馳控制器
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參考設計

TIDA-01623 — 30-W/in3、93.4% 效率、100-W AC/DC 變壓器參考設計

This fully-tested reference design is a high-efficiency, high-power-density, AC/DC adapter solution with a wide input voltage range (100- to 240-V AC) for laptop adapters and smartphone charger applications. This design consists of a front-end transition-mode (TM) power factor correction (PFC) (...)
Design guide: PDF
電路圖: PDF
參考設計

PMP21479 — 適用於高功率密度 5-20V AC/DC 適配器、具有 Si FET 的 65W 主動鉗位返馳參考設計

This reference design uses the UCC28780 active clamp flyback controller to generate a 20-V/15-V/9-V/5-V adjustable output voltage. The maximum power rating is 65 W at 20-V output and up to 3 A at all other output voltage settings. This design reaches a peak efficiency of over 93% using silicon (...)
Test report: PDF
電路圖: PDF
參考設計

PMP21552 — 65-W USB Type-C ZVS 返馳參考設計

This reference design is a low-cost, high-density USB adapter that uses the UCC28780 active-clamp flyback controller and UCC5304 isolated driver in a ZVS-flyback topology. The maximum power rating is 65 W at 20-V output but is adjustable for 20-V/15-V/9-V/5-V output voltage and 3 A.  This (...)
Test report: PDF
電路圖: PDF
參考設計

PMP21639 — 65-W USB Type-C 高密度主動箝位返馳 GaN 參考設計

This reference design is a high density USB adapter that uses the UCC28780 active clamp flyback controller and LMG3411R150 GaN with integrated driver and protection. The maximum power rating is 65W at 20V output but is adjustable for 20V/15V/9V/5V output voltage and 3A.  This design reaches a (...)
Test report: PDF
電路圖: PDF
參考設計

TIDA-010047 — 採用 Si MOSFET 的 22-W/in3、93.1% 峰值效率、100-W USB-PD 3.0 AC/DC 適配器參考設計

This fully-tested reference design is a high-efficiency, high-power-density, AC/DC adapter solution with a wide input voltage range (100- to 240-V AC) for laptop adapters and smartphone charger applications. This design consists of a front-end transition-mode (TM) power factor correction (PFC) (...)
Design guide: PDF
電路圖: PDF
參考設計

PMP30720 — 高效、超寬輸入 (20 VDC 至 375 VDC) 隔離式電源供應參考設計

This reference design uses the UCC28C42 boost controller and the UCC28780 active-clamp flyback controller to generate an isolated output of 24 V at 3.5 A over an ultra-wide input voltage range of 20 V to 375 V. The design also uses the UCC24612 synchronous rectifier controller on the secondary (...)
Test report: PDF
電路圖: PDF
參考設計

PMP30631 — 高效率、70-W AC/DC 主動鉗位反馳式參考設計

This reference design uses the UCC28780 active clamp flyback controller to generate an isolated output of 20 V @ 3.5 A over an input voltage rage of 90 Vac to 264 Vac. The design also uses the UCC24612 synchronous rectifier controller on the secondary side. Zero voltage switching (ZVS) ensures (...)
Test report: PDF
電路圖: PDF
參考設計

PMP40328 — 具有 SJ FET 的高效、高功率密度主動鉗位返馳變壓器參考設計

PMP40328 is a maximum 9V 5A reference design for high frequency and high density adapter applications. The solution implements a high efficiency active clamp flyback  controller UCC28780 and secondary rectifier controller UCC24612-2. The efficiency is around 90% at full load. Integrated input (...)
Test report: PDF
電路圖: PDF
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SOIC (D) 16 檢視選項
WQFN (RTE) 16 檢視選項
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