TPS2420
- 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.
技术文档
| 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 | TPS2420 5-A, 20-V Integrated FET Hot-Swap Controller 数据表 (Rev. F) | 2014-1-29 | |||
| 证书 | TPS2420 UL Certificate of Compliance IEC 60950-1 | 2020-4-10 | ||||
| 功能安全信息 | eFuse: Safety Certification and why it Matters | 2020-3-18 | ||||
| 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 |
设计与开发
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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。
TVS-RECOMMENDATION-CALC — TVS diode recommendation tool
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| VQFN (RSA) | 16 | Ultra Librarian |
订购和质量
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