TI 公司的TPS2480/81是具有正電壓智能保護(hù)的熱插拔控制器和I2C電流監(jiān)視器.具有可編程的FET功率限制,外接N溝FET柵極驅(qū)動(dòng),可編程的故障定時(shí)器,電流,電壓和功率的I2C監(jiān)視,1%的高精度電流監(jiān)視,并具有動(dòng)態(tài)校準(zhǔn),輸電壓9-20V,主要用在服務(wù)器,硬盤驅(qū)動(dòng),存儲(chǔ)網(wǎng)絡(luò)和基站.本文介紹了TPS2480/81主要特性, 功能方框圖, 低壓和高壓應(yīng)用電路圖, 電流和電壓測量配置圖以及TPS2480 和TPS2481評(píng)估模塊主要特性,電路圖和材料清單, PCB頂層元件布局圖.
Positive Voltage Intelligent Protection Device Hotswap Controller and I2C Current Monitor
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.
TPS2480/81主要特性:
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 20-V Input Range
TPS2480/81應(yīng)用:
Servers
Hard Drives
Storage Networks
Base Stations
圖1.TPS2480/81功能方框圖
圖2.TPS2480/81功能方框圖(2)
圖3.TPS2480/81低壓應(yīng)用電路圖
圖4.TPS2480/81高壓應(yīng)用電路圖
圖5.TPS2480/81電流和電壓測量配置圖
TPS2480 和TPS2481評(píng)估模塊
The EVM design allows for several common application designs: a 12-V system with latched or automatic retry and a 48-V system with latched or automatic retry. The 12-V versions feature Texas Instruments new line of high-performance power MOSFETs. The EVM also provides a USB interface for the I2C™ current monitor when using the TPS2480/1 GUI on a PC.
TPS2480和TPS2481評(píng)估模塊主要特性:
• General TPS2480/1 Device Features
– Programmable current limiting and power limiting for complete SOA protection
– Programmable fault timer to eliminate nuisance shutdowns
– Programmable undervoltage lockout
– Power good
– Latched operation mode (TPS2480)
– Automatic retry mode (TPS2481)
• EVM Configurable Options
– TPS2481EVM-001 (12 V, 480 W, auto retry)
– TPS2480EVM-002 (12 V, 480 W, latched)
– High-voltage applications (48 V, 400 W, auto retry or latched)
TPS2480 和TPS2481評(píng)估模塊應(yīng)用:
• Any live backplane insertion application
– Servers
Telecommunications
TPS2480 and TPS2481評(píng)估模塊的電和性能指標(biāo)(25℃)
圖6.TPS2480/81PS2481 EVM電路圖(1)
圖7.TPS2480/81PS2481 EVM電路圖:USB-I2C
TPS2480/81PS2481 EVM材料清單(BOM):
Top Side Layout/Routing
圖8.TPS2480/81PS2481 EVM PCB頂層元件布局圖TI 公司的TPS2480/81是具有正電壓智能保護(hù)的熱插拔控制器和I2C電流監(jiān)視器.具有可編程的FET功率限制,外接N溝FET柵極驅(qū)動(dòng),可編程的故障定時(shí)器,電流,電壓和功率的I2C監(jiān)視,1%的高精度電流監(jiān)視,并具有動(dòng)態(tài)校準(zhǔn),輸電壓9-20V,主要用在服務(wù)器,硬盤驅(qū)動(dòng),存儲(chǔ)網(wǎng)絡(luò)和基站.本文介紹了TPS2480/81主要特性, 功能方框圖, 低壓和高壓應(yīng)用電路圖, 電流和電壓測量配置圖以及TPS2480 和TPS2481評(píng)估模塊主要特性,電路圖和材料清單, PCB頂層元件布局圖.
Positive Voltage Intelligent Protection Device Hotswap Controller and I2C Current Monitor
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.
TPS2480/81主要特性:
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 20-V Input Range
TPS2480/81應(yīng)用:
Servers
Hard Drives
Storage Networks
Base Stations
圖1.TPS2480/81功能方框圖
圖2.TPS2480/81功能方框圖(2)
圖3.TPS2480/81低壓應(yīng)用電路圖
圖4.TPS2480/81高壓應(yīng)用電路圖
圖5.TPS2480/81電流和電壓測量配置圖
TPS2480 和TPS2481評(píng)估模塊
The EVM design allows for several common application designs: a 12-V system with latched or automatic retry and a 48-V system with latched or automatic retry. The 12-V versions feature Texas Instruments new line of high-performance power MOSFETs. The EVM also provides a USB interface for the I2C™ current monitor when using the TPS2480/1 GUI on a PC.
TPS2480和TPS2481評(píng)估模塊主要特性:
• General TPS2480/1 Device Features
– Programmable current limiting and power limiting for complete SOA protection
– Programmable fault timer to eliminate nuisance shutdowns
– Programmable undervoltage lockout
– Power good
– Latched operation mode (TPS2480)
– Automatic retry mode (TPS2481)
• EVM Configurable Options
– TPS2481EVM-001 (12 V, 480 W, auto retry)
– TPS2480EVM-002 (12 V, 480 W, latched)
– High-voltage applications (48 V, 400 W, auto retry or latched)
TPS2480 和TPS2481評(píng)估模塊應(yīng)用:
• Any live backplane insertion application
– Servers
Telecommunications
TPS2480 and TPS2481評(píng)估模塊的電和性能指標(biāo)(25℃)
圖6.TPS2480/81PS2481 EVM電路圖(1)
圖7.TPS2480/81PS2481 EVM電路圖:USB-I2C
TPS2480/81PS2481 EVM材料清單(BOM):
Top Side Layout/Routing
圖8.TPS2480/81PS2481 EVM PCB頂層元件布局圖
