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TPS2420

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3V 至 20V、30mΩ、1A 至 5A 电子保险丝

产品详情

FET Internal Ron (typ) (mΩ) 30 Vin (min) (V) 3 Vin (max) (V) 20 Vabsmax_cont (V) 25 Current limit (min) (A) 1 Current limit (max) (A) 5 Overcurrent response Power limiting, current limiting Fault response Auto-retry, Latch-off Soft start Adjustable Features Current monitoring, 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) 30 Vin (min) (V) 3 Vin (max) (V) 20 Vabsmax_cont (V) 25 Current limit (min) (A) 1 Current limit (max) (A) 5 Overcurrent response Power limiting, current limiting Fault response Auto-retry, Latch-off Soft start Adjustable Features Current monitoring, 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
VQFN (RSA) 16 16 mm² 4 x 4
  • Integrated 30-mΩ Pass MOSFET
  • Up to 20-V Bus Operation
  • Programmable Fault Current
  • Programmable Hard Current-Limit
  • Programmable Fault Timer
  • Internal MOSFET Power Limiting Foldback
  • Latching and Auto-Retry Operation
  • Analog Current Monitor Output
  • Powergood Output
  • Fault Output Indicator
  • 4 mm × 4 mm QFN
  • –40°C to 125°C Junction
    Temperature Range
  • UL2367 Recognized - File Number E169910
  • Integrated 30-mΩ Pass MOSFET
  • Up to 20-V Bus Operation
  • Programmable Fault Current
  • Programmable Hard Current-Limit
  • Programmable Fault Timer
  • Internal MOSFET Power Limiting Foldback
  • Latching and Auto-Retry Operation
  • Analog Current Monitor Output
  • Powergood Output
  • Fault Output Indicator
  • 4 mm × 4 mm QFN
  • –40°C to 125°C Junction
    Temperature Range
  • UL2367 Recognized - File Number E169910

The TPS2420 device provides highly integrated load protection for applications up to 20-V. The maximum UV turn-on threshold of 2.9 V makes the TPS2420 well suited to standard bus voltages as low as 3.3 V. The TPS2420 device protects loads, minimizes inrush current, and safely shuts down in the event of a fault. The programmable fault current threshold starts the fault timer while allowing the current to pass to the load uninhibited. The programmable current limit threshold sets the maximum current allowed into the load, for both inrush and severe load faults. Both events use the programmable timer which inhibits all current to the load when it expires.

The dual protection thresholds are useful in applications such as disk drives. The start-up and seek currents are typically higher than the nominal current and during this time the load needs a low impedance path to deliver the power. If a failure at the load occurs, the current limit does not allow the current to exceed the programmed threshold. This protects both the load and the integrity of the power supply. The internal MOSFET is protected by power limit circuitry which ensures that the MOSFET remains within its safe operating area (SOA) during all operating states.

The TPS2420 device also allows the system to monitor load currents with no need for a shunt in the power path. The gain of the current monitor can be scaled to the application. Fault and power good outputs are provided for improved system management and sequencing control.

This device can be programmed to either latch-off or retry in the event of a fault. All of this functionality is packed into a 16-pin 4 × 4 mm QFN package.

The TPS2420 device provides highly integrated load protection for applications up to 20-V. The maximum UV turn-on threshold of 2.9 V makes the TPS2420 well suited to standard bus voltages as low as 3.3 V. The TPS2420 device protects loads, minimizes inrush current, and safely shuts down in the event of a fault. The programmable fault current threshold starts the fault timer while allowing the current to pass to the load uninhibited. The programmable current limit threshold sets the maximum current allowed into the load, for both inrush and severe load faults. Both events use the programmable timer which inhibits all current to the load when it expires.

The dual protection thresholds are useful in applications such as disk drives. The start-up and seek currents are typically higher than the nominal current and during this time the load needs a low impedance path to deliver the power. If a failure at the load occurs, the current limit does not allow the current to exceed the programmed threshold. This protects both the load and the integrity of the power supply. The internal MOSFET is protected by power limit circuitry which ensures that the MOSFET remains within its safe operating area (SOA) during all operating states.

The TPS2420 device also allows the system to monitor load currents with no need for a shunt in the power path. The gain of the current monitor can be scaled to the application. Fault and power good outputs are provided for improved system management and sequencing control.

This device can be programmed to either latch-off or retry in the event of a fault. All of this functionality is packed into a 16-pin 4 × 4 mm QFN package.

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类型 标题 下载最新的英语版本 日期
* 数据表 TPS2420 5-A, 20-V Integrated FET Hot-Swap Controller 数据表 (Rev. F) 2014年 1月 29日
证书 TPS2420 UL Certificate of Compliance IEC 60950-1 2020年 4月 10日
功能安全信息 eFuse: Safety Certification and why it Matters 2020年 3月 18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

设计和开发

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评估板

TPS2420EVM-01 — TPS2420 热插拔控制器评估模块

TPS2420EVM-01 是使用带有集成式 MOSFET 的 TPS2420 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。

用户指南: PDF
TI.com 上无现货
仿真模型

TPS2420 Unencrypted PSpice Transient Model Package (Rev. A)

SLUM497A.ZIP (73 KB) - PSpice Model
计算工具

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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模拟工具

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PSpice® for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence® 的模拟分析引擎。PSpice for TI 可免费使用,包括业内超大的模型库之一,涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

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封装 引脚 下载
VQFN (RSA) 16 查看选项

订购和质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息:
  • 制造厂地点
  • 封装厂地点

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