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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

FET Internal Ron (typ) (mΩ) 33 Vin (min) (V) 3 Vin (max) (V) 20 Vabsmax_cont (V) 25 Current limit (min) (A) 1.8 Current limit (max) (A) 5.5 Overcurrent response Power limiting, current limiting Fault response Auto-retry Soft start Adjustable Features Fault output, Power good signal UL recognition UL2367 Rating Catalog Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125 Function Adjustable current limit, Current monitoring, Power good signal, Short circuit protection, Thermal shutdown
FET Internal Ron (typ) (mΩ) 33 Vin (min) (V) 3 Vin (max) (V) 20 Vabsmax_cont (V) 25 Current limit (min) (A) 1.8 Current limit (max) (A) 5.5 Overcurrent response Power limiting, current limiting Fault response Auto-retry Soft start Adjustable Features Fault output, Power good signal UL recognition UL2367 Rating Catalog Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125 Function Adjustable current limit, Current monitoring, Power good signal, Short circuit protection, Thermal shutdown
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • 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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类型 标题 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年 5月 15日
证书 TPS2421-2 UL Certificate of Compliance IEC 60950-1 2020年 4月 24日
功能安全信息 eFuse: Safety Certification and why it Matters 2020年 3月 18日
电子书 11 Ways to Protect Your Power Path 2019年 7月 3日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
选择指南 电源管理指南 2018 (Rev. R) 2018年 6月 25日
应用手册 Basics of eFuses (Rev. A) 2018年 4月 5日
应用手册 Power Multiplexing Using Load Switches and eFuses (Rev. A) 2017年 6月 20日
用户指南 TPS2420 Reference Design 2009年 3月 27日
用户指南 Using the TPS2420, TPS2421-1, TPS2421-2 2009年 1月 6日

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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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电子保险丝和热插拔控制器
TPS2421-1 — 3V 至 20V、33mΩ、1.8A 至 5.5A 电子保险丝 TPS2421-2 — 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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  • MSL 等级/回流焊峰值温度
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