TPS2481
- Programmable FET Power Limit
- External N-Channel FET Gate Drive
- Programmable Fault Timer
- Open Drain Power Good Output
- I2C monitoring of Current, Voltage and Power
- High Accuracy Current Monitoring
(1% over temperature) - Dynamic Calibration
- 9-V to 26-V Input Range
- APPLICATIONS
- Servers
- Hard Drives
- Storage Networks
- Base Stations
The TPS2480/81 are designed to minimize inrush into applications and protect both the load and the FET from over-current or short circuit events. They control an external N-channel MOSFET switch and provide accurate voltage, current, and power monitoring using a configurable 12 bit A/D converter via an I2C interface. The independently adjustable power limit and current limit ensure that the external MOSFET operates within the FET’s Safe Operating Area (SOA).
The flexible design includes a Power Good output which can be used for sequencing as well as load fault indication. An external timer capacitor can set the fault time to help immunize the system from nuisance shutdowns during brief transient events.
The monitoring circuitry incorporates a high accuracy A/D converter which can be configured from a 9 to 13 bit converter. The internal gain of the A/D can be configured to scale the current, voltage and power readings to the needs of the application. An additional multiplying register calculates power in Watts. The I2C interface uses multi-level addressing to allow up to 16 programmable addresses.
The TPS2480 and TPS2481 monitors shunts on buses that can vary from 9 V to 26 V and with a few external components it is possible to monitor buses as high as 80 V.
The monitoring circuitry uses a single 3-V to 5.5-V supply, drawing a maximum of 1 mA of supply current.
技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | Positive Voltage Hotswap Controller and I2C Current Monitor 数据表 (Rev. B) | 2010年 10月 29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 | ||||
选择指南 | Hot Swap Selection Tool | 2015年 7月 28日 | ||||
EVM 用户指南 | TPS2480 and TPS2481 Evaluation Module User's Guide (Rev. A) | 2010年 6月 18日 |
设计和开发
如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。
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