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東芝推出首款可重複使用電子熔斷器 - eFuse IC

November 20, 2019

Toshiba Electronic Devices & Storage Corporation

TCKE8xx series

東芝電子元件及儲存裝置株式會社(東芝)推出首款電子熔斷器eFuse IC。TCKE8系列包括六款產品,支援電源線路中電路保護所需的各類功能。其中兩款產品TCKE805NA及TCKE805NL已開始出貨。

此IC最為顯著的特點是可以重複使用。玻璃管熔斷器和晶片熔斷器等傳統物理熔斷器在過流狀態下實際切斷供電線路,以提供保護,但一旦熔斷就需要更換。而eFuse IC產品在發生異常時,使用其內部電路關閉電源線並且可以重設後重新使用。

另一大優勢在於,其IC能避免複雜的線路設計,減少一定數量的元件。與使用分立式元件保障的安全功能相比,它僅需較少數量的元件和較小PCB板面積,進而簡化電路設計。

TCKE8系列將過電流檢測精度提升至超過物理熔斷器的水準,實現高度可靠的線路保護。此外,eFuse IC還提供電流鉗模式和電壓鉗模式以防止發生過電流和過電壓。也能將電流和電壓鉗制在額定值上,保護電路並維持供電,即使是在施加過電流或過電壓的情況下也可提供保護功能。除此之外,也提供過熱保護和短路保護功能,在發生嚴重過熱或意外短路的現象時,能立即切斷電源。

結合以上完美特性,使該系列產品能夠為伺服器和筆記型電腦等電子設備提供有力保護。近年來,以上電子設備對耐壓、耐流性能的要求不斷提高。並且東芝計畫通過國際高水準安全標準IEC 62368-1的認證,這將簡化客戶設備認證測試。

該產品線提供兩種類型的產品:一種是自動重設恢復型,即eFuse自行恢復線路;另一種是鎖存型,即通過外部信號進行恢復。讓客戶可依據自己的需求或設備尺寸選擇合適的eFuse IC產品。

應用

  • 供電線路的電路保護
    (伺服器、SSD、筆記型電腦、遊戲機和增強現實/虛擬實境設備等)

產品特點

  • 過流限制精度:±11% @Ta=-40至+85℃,ILIM=4.38A
  • 高速短路保護:tFastOffDly=150ns(典型值)@Ta=-40至+85℃
  • 高輸出電流:IOUT=0至5.0A
  • 薄型緊湊封裝:3.00×3.00mm(典型值),t=0.75mm(最大值)

產品規格

(Unless otherwise specified, @Ta=25℃)

Part number

TCKE800NA

[1]

TCKE800NL

[1]

TCKE805NA

TCKE805NL

TCKE812NA

[1]

TCKE812NL

[1]

Package

Name

WSON10B

Size typ.  (mm)

3.00×3.00, t=0.75 max

Operating

ranges

Input voltage  VIN  (V)

4.4 to 18

Output current IOUT  (A)

0 to 5.0

On-resistance  RON typ.  (mΩ)

28

Over current limit accuracy  (%)

±11[2]

Over voltage clamp  VOVC typ.  (V)

-

6.04

15.1

Fast-trip comparator delay

tFastOffDly typ.  (ns)

@Ta=-40 to +85℃

150

Recovery Operation Type

Auto-retry

Latched

Auto-retry

Latched

Auto-retry

Latched

Adjustable slew rate control

Stock Check & Purchase

-

 

-

 

 

-

 

 

-

 

Notes :

[1] 開發中

[2] @Ta=-40至+85℃,ILIM=4.38A

Follow the link below for more on Toshiba’s eFuse IC line-up.
To check availability of the new products at online distributors, please visit:
  • TCKE805NA
  • TCKE805NL

Video

Reference Design

Customer Inquiries

Small Signal Device Sales & Marketing Department

Tel: +81-3-3457-3411

Contact

客戶查詢

台灣東芝電子零組件股份有限公司

TEL: +886-(0)2-25089988

Information in this document, including product prices and specifications, content of services and contact information, is current on the date of the announcement but is subject to change without prior notice.

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