TPS2481 - 正电压智能保护器件/热插拔控制器和 I2C 电流监视器

TPS2481是TI德州仪器公司的一款热插拔和ORing控制组合产品，TPS2481是正电压智能保护器件/热插拔控制器和 I2C 电流监视器，本站介绍了TPS2481的封装应用图解、特点和优点、功能等，并给出了与TPS2481相关的TI元器件型号供参考。

TPS2481 - 正电压智能保护器件/热插拔控制器和 I2C 电流监视器 - 热插拔和ORing控制组合 - 保护、监控和热插拔 - 德州仪器

产品描述

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.

产品特性

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

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