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eFuses 和熱插拔制器

TPS25921A

現行

具有自動重試故障反應功能的 4.5-V 至 18-V、90mΩ、0.4-1.6A eFuse

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產品規格表

TPS25921A

現行
產品規格表 立即訂購

產品詳細資料

FET Internal Ron (typ) (mΩ) 90 Vin (min) (V) 4.5 Vin (max) (V) 18 Vabsmax_cont (V) 20 Current limit (min) (A) 0.4 Current limit (max) (A) 1.6 Overcurrent response current limiting Fault response Auto-retry Soft start Adjustable Overvoltage response Cut-off Features Fault output UL recognition UL2367, UL60950 Rating Catalog Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 85 Function Adjustable current limit, Inrush current control, Overvoltage protection, Short circuit protection, Thermal shutdown Quiescent current (Iq) (typ) (A) 0.0058 Quiescent current (Iq) (max) (A) 0.008
FET Internal Ron (typ) (mΩ) 90 Vin (min) (V) 4.5 Vin (max) (V) 18 Vabsmax_cont (V) 20 Current limit (min) (A) 0.4 Current limit (max) (A) 1.6 Overcurrent response current limiting Fault response Auto-retry Soft start Adjustable Overvoltage response Cut-off Features Fault output UL recognition UL2367, UL60950 Rating Catalog Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 85 Function Adjustable current limit, Inrush current control, Overvoltage protection, Short circuit protection, Thermal shutdown Quiescent current (Iq) (typ) (A) 0.0058 Quiescent current (Iq) (max) (A) 0.008
SOIC (D) 8 29.4 mm² 4.9 x 6
  • 4.5 V – 18 V Operating Voltage, 20 V (Max)
  • 90 mΩ RDS(ON) (Typical)
  • 0.4 A to 1.6 A Adjustable Current Limit
  • ±2% Accurate ILIMIT at 1A at 25°C
  • ±3% Overvoltage, Undervoltage Threshold
  • Programmable dVO/dt Control
  • Fault Output for Thermal Shutdown, UVLO and
    OVP
  • –40°C to 125°C Junction Temperature Range
  • Auto-Retry and Latch-Off Versions
  • UL2367 Recognized - File No. E169910
  • UL60950 - Safe during Single Point Failure Test
  • 4.5 V – 18 V Operating Voltage, 20 V (Max)
  • 90 mΩ RDS(ON) (Typical)
  • 0.4 A to 1.6 A Adjustable Current Limit
  • ±2% Accurate ILIMIT at 1A at 25°C
  • ±3% Overvoltage, Undervoltage Threshold
  • Programmable dVO/dt Control
  • Fault Output for Thermal Shutdown, UVLO and
    OVP
  • –40°C to 125°C Junction Temperature Range
  • Auto-Retry and Latch-Off Versions
  • UL2367 Recognized - File No. E169910
  • UL60950 - Safe during Single Point Failure Test

The TPS25921 is a compact, feature rich eFuse with a full suite of protection functions. The wide operating voltage allows control of many popular DC buses. The precise ±2% current limit, at room temperature, provides excellent accuracy making the TPS25921 well suited for many system protection applications.

Load, source and device protection are provided with multiple programmable features including overcurrent, overvoltage and undervoltage. 3% threshold accuracy for UV and OV, ensures tight supervision of bus voltages, eliminating the need for supervisor circuitry. Fault flag output (FLT) is provided for system status monitoring and down stream load control.

For hot-plug-in boards, TPS25921 provides in-rush current control and programmable output ramp-rate. Output ramp rate is programmable using a capacitor at soft-start (SS) pin, for maximum design flexibility.

The TPS25921 is a compact, feature rich eFuse with a full suite of protection functions. The wide operating voltage allows control of many popular DC buses. The precise ±2% current limit, at room temperature, provides excellent accuracy making the TPS25921 well suited for many system protection applications.

Load, source and device protection are provided with multiple programmable features including overcurrent, overvoltage and undervoltage. 3% threshold accuracy for UV and OV, ensures tight supervision of bus voltages, eliminating the need for supervisor circuitry. Fault flag output (FLT) is provided for system status monitoring and down stream load control.

For hot-plug-in boards, TPS25921 provides in-rush current control and programmable output ramp-rate. Output ramp rate is programmable using a capacitor at soft-start (SS) pin, for maximum design flexibility.
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技術文件

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類型 標題 日期
* Data sheet TPS25921x 4.5V - 18V eFuse with Precise Current Limit and Over Voltage Protection datasheet (Rev. C) PDF | HTML 2015年 11月 11日
Certificate TPS25921 CB Test Certificate IEC 62368-1 2021年 7月 9日
Functional safety information eFuse: Safety Certification and why it Matters 2020年 3月 18日
Certificate TPS25921x UL Certificate of Compliance IEC 62368-1 2020年 1月 17日
E-book 11 Ways to Protect Your Power Path 2019年 7月 3日
Application note Basics of eFuses (Rev. A) 2018年 4月 5日
Technical article How adding an eFuse will protect your brand’s reputation PDF | HTML 2017年 6月 21日
EVM User's guide User Guide for TPS25921EVM-637 2014年 8月 4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

TPS25921EVM-637 — 具有精密電流限制的 TPS25921EVM-637 4.5-18V eFuse 評估模組

The TPS25921xD eFuses are highly integrated circuit protection and power management solution in a small package. These devices use few external components and provide multiple protection modes, along with providing a robust defense against overloads, shorts circuits, voltage surges and excessive (...)

使用指南: PDF
TI.com 無法提供
模擬型號

TPS25921A Unencrypted PSpice Transient Model Package (Rev. B)

SLVMAE6B.ZIP (95 KB) - PSpice Model
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計算工具

SLUC573 — TPS25921EVM-637 Design Calculator Tool

支援產品和硬體

支援產品和硬體

產品
eFuses 和熱插拔制器
TPS25921A — 具有自動重試故障反應功能的 4.5-V 至 18-V、90mΩ、0.4-1.6A eFuse TPS25921L — 具閉鎖故障響應的 4.5-V 至 18-V、90mΩ、0.4-1.6A eFuse
硬體開發
開發板
TPS25921EVM-637 — 具有精密電流限制的 TPS25921EVM-637 4.5-18V eFuse 評估模組
下載
計算工具

TVS-RECOMMENDATION-CALC — TVS diode recommendation tool

This tool suggests suitable TVS for given system parameters and abs max voltage rating of the device.
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下載
模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
要求
參考設計

TIDA-00420 — ADC 架構、數位隔離、廣泛輸入、16 通道、AC/DC 二進位輸入參考設計

此參考設計展現具強化型隔離的成本最佳化、可擴充 ADC 架構 AC/DC 二進位輸入模組 (BIM) 架構。10 位元或 12 位元 SAR ADC 的 16 通道，用於感測多個二進位輸入。運算放大器除了維持低每頻道成本外，也可為各輸入提供最佳訊號調節。數位隔離器 (基本型或強化型) 可用於隔離主機 MCU 或處理器。提供可測量溫度，濕度和磁場以進行診斷的設備。具可配置輸出的強化型隔離 DC/DC 電源供應器，可提供二進位模組所需的電源。
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00331 — 精密功率限制解決方案

This solution limits the power delivered to a maximum of 15W to ensure IEC60730 compliance in Human-Machine-Interaction (HMI) ports, making it very easy for the end equipment to meet the safety regulations.
This design uses TI’s TPS25921AD to monitor the voltage and current flowing through (...)
Test report: PDF
電路圖: PDF
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