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

UCC24630

現行

具有超低待機電流的同步整流器控制器

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產品規格表

UCC24630

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 Volt-sec balance Topology CCM, DCM Rating Catalog
Operating temperature range (°C) -40 to 125 Control mode Volt-sec balance Topology CCM, DCM Rating Catalog
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • Secondary-Side SR Controller Optimized for 5-V to 24-V Flyback Systems
  • Operating Frequency Up to 200 kHz
  • Volt-Second Balance SR On-Time Control
  • Minimize Effect of MOSFET Device and Layout Inductance
  • CCM Operation Compatibility
  • Compatible with PSR and SSR Control
  • Auto Low-Power Detect and 110-µA Standby Mode Current
  • Wide VDD Range from 3.6 V to 28 V
  • Rail-to-Rail Gate Driver with 13-V Clamp
  • Open and Short Pin Fault Protection
  • Secondary-Side SR Controller Optimized for 5-V to 24-V Flyback Systems
  • Operating Frequency Up to 200 kHz
  • Volt-Second Balance SR On-Time Control
  • Minimize Effect of MOSFET Device and Layout Inductance
  • CCM Operation Compatibility
  • Compatible with PSR and SSR Control
  • Auto Low-Power Detect and 110-µA Standby Mode Current
  • Wide VDD Range from 3.6 V to 28 V
  • Rail-to-Rail Gate Driver with 13-V Clamp
  • Open and Short Pin Fault Protection

The UCC24630 SR controller is a high-performance controller and driver for N-channel MOSFET power devices used for secondary-side synchronous rectification.

The combination of controller and MOSFET emulates a near-ideal diode rectifier. This solution not only directly reduces power dissipation of the rectifier but also reduces primary-side losses as well, due to compounding of efficiency gains.

Utilizing a volt-second balancing control method, the UCC24630 is ideal for flyback power supplies over a wide-output voltage range since the device is not connected directly to the MOSFET drain. The SR drive turn-off threshold is not dependent on the MOSFET RDS(on) which allows optimizing for maximum conduction time. Also secondary current ringing due to device and layout inductance does not affect the SR turn-off threshold.

The UCC24630 controller offers a programmable false-trigger filter, a frequency detector to automatically switch to standby mode during low power conditions and pin fault protections. The UCC24630 is compatible with DCM, TM and CCM operation.

The wide VDD operating range, wide programming range of the VPC voltage and blanking time, allows use in a variety of flyback converter designs.

The UCC24630 SR controller is a high-performance controller and driver for N-channel MOSFET power devices used for secondary-side synchronous rectification.

The combination of controller and MOSFET emulates a near-ideal diode rectifier. This solution not only directly reduces power dissipation of the rectifier but also reduces primary-side losses as well, due to compounding of efficiency gains.

Utilizing a volt-second balancing control method, the UCC24630 is ideal for flyback power supplies over a wide-output voltage range since the device is not connected directly to the MOSFET drain. The SR drive turn-off threshold is not dependent on the MOSFET RDS(on) which allows optimizing for maximum conduction time. Also secondary current ringing due to device and layout inductance does not affect the SR turn-off threshold.

The UCC24630 controller offers a programmable false-trigger filter, a frequency detector to automatically switch to standby mode during low power conditions and pin fault protections. The UCC24630 is compatible with DCM, TM and CCM operation.

The wide VDD operating range, wide programming range of the VPC voltage and blanking time, allows use in a variety of flyback converter designs.

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UCC24636 現行 具超低待機電流的同步整流器控制器 The UCC24636 cannot be used in CCM flyback designs

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類型 標題 日期
* Data sheet UCC24630 Synchronous Rectifier Controller With Ultra-Low-Standby Current datasheet (Rev. A) PDF | HTML 2015年 3月 30日
Application note UCC24630 and UCC24636 SR-Control Configurations Guide 2017年 12月 18日
EVM User's guide Using the UCC24630EVM-636 65-W AC-to-DC Adapter (Rev. B) 2016年 12月 12日
Technical article Achieving low standby power and high efficiency in flyback converters PDF | HTML 2015年 7月 27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

UCC24630EVM-636 — UCC24630 65W AC/DC 變壓器

This is a high efficiency 65W AC/DC design using UCC24630 Synchronous Rectification Controller for a Universal input (85Vac to 265Vac) to 19.5V @3.33A output exceeding CoC-5 Tier2 and DOE Level VI performance requirements for external power supplies.

使用指南: PDF
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AC/DC & DC/DC controllers (external FET)
UCC24630 — 具有超低待機電流的同步整流器控制器
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參考設計

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The TIDA-00702 is a 60-W, industrial AC-DC power supply designed for use in industrial and instrumentation systems such as process controls, factory automation, and machinery control. This reference design is a Quasi-resonant (QR) flyback converter implemented using the UCC28740 CC-CV flyback (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00701 — 具有精密電流及功率限制的 100W、24V 高效率高 PF 工業電源

TIDA-00701 is a 100W, 24V, Industrial AC-DC power supply designed for use in Industrial & Instrumentation systems such as process controls, factory automation and machinery control. This reference design has front end Power Factor Correction (PFC) circuit designed using UCC28051 PFC controller, (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00519 — 65W 高效率 CoC-5 tier2/DOE Level VI AC 變壓器

This is a high efficiency 65W AC/DC design for a Universal input (85Vac to 265Vac) to 19.5V @3.33A output exceeding CoC-5 Tier2 and DOE Level VI requirements for external power supplies using the LM5023 Quasi-Resontant Flyback Controller with UCC24630 Synchronous Rectification Controller and (...)
電路圖: PDF
參考設計

PMP11329 — 通用線路至 13V@4.6A 電源參考設計

Universal line to 13 volt at 60 watts power supply. This is a synchronous fly back operating in continuous conduction mode using TI's synchronous rectifier controller on the secondary.
Test report: PDF
電路圖: PDF
參考設計

PMP10145 — 38W 離線 AC/DC 轉換模式同步返馳式轉換器參考設計

The PMP10145 reference design uses the UCC28610 flyback controller for the transition mode flyback topology. It generates an isolated output (9V@4.22A) from a wide AC input voltage range (80VAC - 291VAC). The controller maintains discontinuous mode operation and valley switching over the entire (...)
Test report: PDF
電路圖: PDF
參考設計

PMP11281 — 具超過 88% 平均效率的通用 AC 輸入、5V/10A/50W PSR 返馳電源供應參考設計

PMP11281 is a quasi-resonant Flyback power suppy based on the UCC28730 primary side regulation (PSR) controller. The elimination of optocoupler using PSR topology promises higher reliability and lower system cost. The design achieves less than 40mW standby power losses and over 88% average (...)
Test report: PDF
電路圖: PDF
參考設計

PMP11232 — 具有超過 89.5% 平均效率的通用 AC 輸入 5V/6A/30W PSR 返馳電源供應

PMP11232 is a quasi-resonant Flyback power suppy based on the UCC28730 primary side regulation (PSR) controller. The elimination of optocoupler using PSR topology promises higher reliability and lower system cost. The design achieves less than 40mW standby power losses and over 89.5% average (...)
Test report: PDF
電路圖: PDF
參考設計

PMP10974 — 具有超過 89% 平均效率的通用 AC 輸入 5V/10A/50W PSR 返馳電源供應參考設計

PMP10974 is a quasi-resonant Flyback power suppy based on the UCC28730 primary side regulation (PSR) controller. The elimination of optocoupler using PSR topology promises higher reliability and lower system cost. The design achieves less than 40mW standby power losses and over 89% average (...)
Test report: PDF
電路圖: PDF
參考設計

PMP10164 — 通用 AC 輸入、10.5V/1.8A DC 輸出、隔離同步返馳式轉換器參考設計

The PMP10164 reference design supplies 10.5V@1.8A from universal AC mains; the isolated Flyback topology is the most used for low power range due to single magnetic component. Since the load is a power line communication chip, a fixed frequency modulation has been chosen. The controller LM5021 (...)
Test report: PDF
電路圖: PDF
參考設計

PMP11216 — 同步整流器控制器子板參考設計

The UCC24630 SR controller is a high performance controller and driver for N-channel MOSFET power devices used in secondary side synchronous rectification. Using a volt-second balance control method, the UCC24630 is ideal for flyback power supplies over a wide output voltage range since the IC is (...)
Test report: PDF
電路圖: PDF
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