首頁 電源管理 AC/DC 切換穩壓器 AC/DC 控制器
首頁
電源管理
AC/DC 切換穩壓器
AC/DC 控制器

UCC28C45

現行

工業用 20-V、低功耗電流模式 PWM 控制器、8.4-V/7.6-V UVLO、50% 工作週期

立即訂購
產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
具備升級功能，可直接投入使用替代所比較的裝置。
UCC28C55 現行 工業用 30-V、低功耗電流模式 PWM 控制器、8.4-V/7.6-V UVLO、50% 工作週期 Higher supply voltage, lower start-up and operating current, and better efficiency.

UCC28C45

現行
產品規格表 立即訂購

產品詳細資料

Topology Boost, Buck, Flyback, Forward, SEPIC Control mode Current Features Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Fixed frequency, Multi-topology, Programmable max duty cycle Duty cycle (max) (%) 50
Topology Boost, Buck, Flyback, Forward, SEPIC Control mode Current Features Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Fixed frequency, Multi-topology, Programmable max duty cycle Duty cycle (max) (%) 50
VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm) SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • Enhanced replacement for UCx84x and UCx84xA family with pin-to-pin compatibility
  • Operating frequency: 1MHz Maximum
  • 50µA Startup Current, 100µA Maximum
  • Low operating current: 2.3mA (at fOSC = 52kHz)
  • Fast, cycle-by-cycle overcurrent limiting: 35ns
  • Peak driving current: ±1A. Rail-to-rail output:
    • 25ns rise time
    • 20ns fall time
  • ±1% accurate 2.5V error amplifier reference
  • Trimmed oscillator discharge current
  • Undervoltage lockout protections
  • VSSOP-8 package minimizes board space
  • Enhanced replacement for UCx84x and UCx84xA family with pin-to-pin compatibility
  • Operating frequency: 1MHz Maximum
  • 50µA Startup Current, 100µA Maximum
  • Low operating current: 2.3mA (at fOSC = 52kHz)
  • Fast, cycle-by-cycle overcurrent limiting: 35ns
  • Peak driving current: ±1A. Rail-to-rail output:
    • 25ns rise time
    • 20ns fall time
  • ±1% accurate 2.5V error amplifier reference
  • Trimmed oscillator discharge current
  • Undervoltage lockout protections
  • VSSOP-8 package minimizes board space

The UCCx8C4x family are high-performance, current-mode PWM controllers. The UCCx8C4x is an enhanced BiCMOS version with pin-for-pin compatibility to the industry standard UCx84xA family and UCx84x family of PWM controllers. The BiCMOS technology offers lower power consumption to improve efficiency as well as faster current sense and oscillator frequency.

In addition, lower startup voltage versions of 7V are offered as UCCx8C40 and UCCx8C41 for use in battery systems. The UCC28C4x series is specified for operation from –40°C to 125°C, and the UCC38C4x series is specified for operation from 0°C to 85°C.

Providing necessary features to control fixed frequency, peak current-mode power supplies, this family offers the following performance advantages. The device offers high-frequency operation up to 1MHz, suitable for high speed applications. The trimmed discharge current enables more precise programming of the maximum duty cycle and dead-time limit when compared to the UCCx8C4x family. Reduced start-up and operating currents minimizes start-up loss and low operating power consumption for improved efficiency. The device also features a fast current-sense-to-output delay time of 35ns for superior overload protection at the power switch, and a ±1A peak output current capability with improved rise and fall times for driving large external MOSFETs directly.

The UCCx8C4x family is offered in 8-pin VSSOP (DGK) and 8-pin SOIC (D) packages.

The UCCx8C4x family are high-performance, current-mode PWM controllers. The UCCx8C4x is an enhanced BiCMOS version with pin-for-pin compatibility to the industry standard UCx84xA family and UCx84x family of PWM controllers. The BiCMOS technology offers lower power consumption to improve efficiency as well as faster current sense and oscillator frequency.

In addition, lower startup voltage versions of 7V are offered as UCCx8C40 and UCCx8C41 for use in battery systems. The UCC28C4x series is specified for operation from –40°C to 125°C, and the UCC38C4x series is specified for operation from 0°C to 85°C.

Providing necessary features to control fixed frequency, peak current-mode power supplies, this family offers the following performance advantages. The device offers high-frequency operation up to 1MHz, suitable for high speed applications. The trimmed discharge current enables more precise programming of the maximum duty cycle and dead-time limit when compared to the UCCx8C4x family. Reduced start-up and operating currents minimizes start-up loss and low operating power consumption for improved efficiency. The device also features a fast current-sense-to-output delay time of 35ns for superior overload protection at the power switch, and a ±1A peak output current capability with improved rise and fall times for driving large external MOSFETs directly.

The UCCx8C4x family is offered in 8-pin VSSOP (DGK) and 8-pin SOIC (D) packages.
filter 尋找其它 AC/DC 控制器
下載 觀看有字幕稿的影片 影片

技術文件

找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 13
重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 UCCx8C4x BiCMOS Low-Power Current-Mode PWM Controller datasheet (Rev. I) PDF | HTML 2024/6/13
功能安全資訊 UCCx8C4x Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 2022/9/12
應用說明 High Density Auxiliary Power Supply Using a SiC MOSFET for 800-V Traction Invert PDF | HTML 2022/7/6
應用說明 Conditioning a Switch-mode Power Supply Current Signal Using TI Op Amps (Rev. A) PDF | HTML 2021/6/11
應用說明 Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B) 2019/3/12
選擇指南 Power Management Guide 2018 (Rev. R) 2018/6/25
應用說明 UCC38C44 12-V Isolated Bias Supply (Rev. A) 2008/10/9
使用指南 UCC38C42 30-W Synchronous Buck Converter Reference Design 2003/2/4
應用說明 UCC38C42 25-W Forward Converter 2002/9/6
應用說明 UCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers 2002/2/7
應用說明 DN-42A Design Considerations for Transitioning from UC3842 to the New UCC3802 1999/9/5
應用說明 U-111, Practical Considerations in Current Mode Power Supplies 1999/9/5
應用說明 DN-30 Programmable Electronic Circuit Breaker 1999/9/5

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

UCC28C56EVM-066 — 適用於一次側控制 (使用 AUX 線圈) 返馳穩壓器的 UCC28C56H-Q1 評估模組

UCC28C56EVM-066 是高效率的一次側控制 (使用 AUX 線圈) 返馳輔助電源供應，適用於 EV 和 HEV 汽車動力傳動系統。該設計爲 800V 電池系統提供 15.2VTYP、40W 輸出。在 125 V 到 1000 V 的輸入電壓範圍內可提供 40 W。確切的輸出電壓視負載而定。從 40-V 至 125-V 輸入，該設計將提供 20 W。EVM 採用 1700-V 碳化矽 (SiC) MOSFET，是 800-V 電池系統的理想選擇。

支援產品和硬體
有庫存
限制：
??asset.out-of-stock-ti_zh_TW??
無法提供
模擬型號

UCCx8C45 Unencrypted PSpice Transient Model

SLUM533.ZIP (5 KB) - PSpice 模型
支援產品和硬體
參考設計

PMP10834 — 85-265Vin、5Vout、1Aout、AC-DC Fly-Buck 轉換器參考設計

PMP10834RevA 參考設計是一款精巧且具熱效率的設計，旨在將各種 AC 輸入降壓（85VAC 至 265VAC）。此非隔離式 Flybuck 設計整合 UCC28C42 PWM 與光耦合器回饋，以提供 1% 輸出電壓調節。所有電路元件（包括磁性元件）皆為標準零件。

支援產品和硬體
封裝 針腳 CAD 符號、佔位空間與 3D 模型
VSSOP (DGK) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian
適用 TI 的評估品項標準條款與條件。

訂購與品質

建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片