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TPS2421-2

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具有热关断功能的 3V 至 20V、33mΩ、1.8A 至 5.5A 电子保险丝

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TPS2421-2

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产品详情

Vabsmax_cont (V) 25 Vin (max) (V) 20 Vin (min) (V) 3 Current limit (max) (A) 5.5 Current limit (min) (A) 1.8 Features Adjustable current limit, Fault output, Overcurrent protection, Power good signal, Thermal shutdown UL recognition UL2367 Overcurrent response Current limiting, Power limiting Fault response Auto-retry Ron (typ) (mΩ) 33 Rating Catalog Soft start Adjustable Quiescent current (Iq) (typ) (A) 0.0039 Quiescent current (Iq) (max) (A) 0.005 Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125
Vabsmax_cont (V) 25 Vin (max) (V) 20 Vin (min) (V) 3 Current limit (max) (A) 5.5 Current limit (min) (A) 1.8 Features Adjustable current limit, Fault output, Overcurrent protection, Power good signal, Thermal shutdown UL recognition UL2367 Overcurrent response Current limiting, Power limiting Fault response Auto-retry Ron (typ) (mΩ) 33 Rating Catalog Soft start Adjustable Quiescent current (Iq) (typ) (A) 0.0039 Quiescent current (Iq) (max) (A) 0.005 Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125
HSOIC (DDA) 8 29.4 mm² (4.9 mm × 6 mm)
  • Integrated Pass MOSFET
  • Up to 20-V Bus Operation
  • Programmable Fault Current
  • Current Limit Proportionally Larger than Fault Current
  • Programmable Fault Timer
  • Internal MOSFET Power Limiting
  • Latch-Off on Fault (TPS2421-1) and Retry (TPS2421-2) Versions
  • SO-8 PowerPad™ Package
  • –40°C to +125°C Junction Temperature Range
  • UL2367 Recognized - File Number E169910
  • Integrated Pass MOSFET
  • Up to 20-V Bus Operation
  • Programmable Fault Current
  • Current Limit Proportionally Larger than Fault Current
  • Programmable Fault Timer
  • Internal MOSFET Power Limiting
  • Latch-Off on Fault (TPS2421-1) and Retry (TPS2421-2) Versions
  • SO-8 PowerPad™ Package
  • –40°C to +125°C Junction Temperature Range
  • UL2367 Recognized - File Number E169910

The TPS2421 device provides highly integrated hot swap power management and superior protection in applications where the load is powered by busses up to 20 V. The TPS2421 device is well suited to standard bus voltages as low as 3.3 V because of the maximum-UV turnon threshold of 2.9 V. These devices are very effective in systems where a voltage bus must be protected to prevent shorts from interrupting or damaging the unit. The TPS2421 device is an easy to use devices in an 8-pin PowerPad™ SO-8 package.

The TPS2421 device has multiple programmable protection features. Load protection is accomplished by a non-current limiting fault threshold, a hard current limit, and a fault timer. The current dual thresholds allow the system to draw short high current pulses, while the fault timer is running, without causing a voltage droop at the load. An example of this is a disk drive startup. This technique is ideal for loads that experience brief high demand, but benefit from protection levels in-line with their average current draw.

Hotswap MOSFET protection is provided by power limit circuitry which protects the internal MOSFET against SOA related failures.

The TPS2421 device is available in latch-off on fault (TPS2421-1) and retry on fault (TPS2421-2).

The TPS2421 device provides highly integrated hot swap power management and superior protection in applications where the load is powered by busses up to 20 V. The TPS2421 device is well suited to standard bus voltages as low as 3.3 V because of the maximum-UV turnon threshold of 2.9 V. These devices are very effective in systems where a voltage bus must be protected to prevent shorts from interrupting or damaging the unit. The TPS2421 device is an easy to use devices in an 8-pin PowerPad™ SO-8 package.

The TPS2421 device has multiple programmable protection features. Load protection is accomplished by a non-current limiting fault threshold, a hard current limit, and a fault timer. The current dual thresholds allow the system to draw short high current pulses, while the fault timer is running, without causing a voltage droop at the load. An example of this is a disk drive startup. This technique is ideal for loads that experience brief high demand, but benefit from protection levels in-line with their average current draw.

Hotswap MOSFET protection is provided by power limit circuitry which protects the internal MOSFET against SOA related failures.

The TPS2421 device is available in latch-off on fault (TPS2421-1) and retry on fault (TPS2421-2).
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技术文档

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 TPS2421-x 5-A, 20-V Integrated FET Hot Swap 数据表 (Rev. K) PDF | HTML 2019-5-15
证书 TPS2421-2 UL Certificate of Compliance IEC 60950-1 2020-4-24
功能安全信息 eFuse: Safety Certification and why it Matters 2020-3-18
电子书 11 Ways to Protect Your Power Path 2019-7-3
选择指南 电源管理指南 2018 2018-7-31
应用手册 Basics of eFuses (Rev. A) 2018-4-5
应用手册 Power Multiplexing Using Load Switches and eFuses (Rev. A) 2017-6-20
用户指南 TPS2420 Reference Design 2009-3-27

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评估板

TPS2421-2EVM-03 — TPS2421-2 热插拔控制器评估模块

TPS2421-2EVM-03 是使用带有集成式 MOSFET 的 TPS2421-2 热插拔控制器的 3V 至 18V 模块。接通电源时，输出功率受限，从而控制浪涌电流并保护 MOSFET。在发生过流的情况下，控制器将快速中断负载的供电，继而发出表明负载状态的信号。工作电流、故障电流和故障计时器设置均可通过硬件编程实现。

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SLUC427 — TPS2421 Design Calculator Tool

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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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