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參數資料
| 型號： | TPS2481PW |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PDSO20 |
| 封裝： | GREEN, PLASTIC, TSSOP-20 |
| 文件頁數： | 21/56頁 |
| 文件大小： | 1381K |
| 代理商： | TPS2481PW |
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SLUS939B – APRIL 2010 – REVISED DECEMBER 2010
www.ti.com
Power, Current, and Voltage Monitoring (PIV)
The TPS2480/81 digital current-shunt monitor has an I2C / SMBus-compatible interface. It provides digital
current,
voltage,
and
power
readings
for
accurate
decision-making
in
precisely-controlled
systems.
Programmable registers allow flexible configuration for measurement resolution, and continuous versus-triggered
operation. Detailed register information appears in the Register Information Section. See the Register Block
Diagram for a block diagram of the TPS2480 / 81 PIV monitoring circuits.
PIV Monitoring - Typical Application Circuit Considerations
Figure 17 shows a typical application circuit for the TPS2480/81. 0.1-mF ceramic capacitors must be placed as
close as possible to the supply and ground pins for supply bypassing.
The pull-up resistors shown on the SDA and SCL lines are not needed if there are pull-up resistors on these
same lines elsewhere in the system. Resistor values shown are typical: consult the I2C or SMBus specification to
determine acceptable values.
I
2C Bus Overview
The I2C and SMBus protocols are essentially compatible with each other and the TPS2480/81 are compatible
with both. This allows use of the I2C interface throughout this data sheet as the primary example, with SMBus
protocol specified only when there is a difference.
Two bidirectional lines, SCL and SDA, connect the TPS2480 / 81 to the bus. Both SCL and SDA are open-drain
connections. The device that initiates the transfer is called a master, and the devices controlled by the master
are slaves. The bus must be controlled by a master device that generates the serial clock (SCL), controls, the
bus access, and generates START and STOP conditions.
To address a specific device, the master initiates a START condition by pulling SDA from a HIGH to a LOW logic
level while SCL is HIGH. All slaves on the bus shift in the slave address byte on the rising edge of SCL, with the
last bit indicating whether a read or write operation is intended. During the ninth clock pulse, the slave being
addressed responds to the master by generating an Acknowledge and pulling SDA LOW.
Data transfer is then initiated and eight bits of data are sent, followed by an Acknowledge bit. During data
transfer, SDA must remain stable while SCL is HIGH. Any change in SDA while SCL is HIGH is interpreted as a
START or STOP condition.
Once all data have been transferred, the master generates a STOP condition, indicated by pulling SDA from
LOW to HIGH while SCL is HIGH. The TPS2480/81 includes a 28-ms timeout on its interface to prevent locking
up an SMBus.
28
Copyright 2010, Texas Instruments Incorporated
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS2481PWR | 功能描述:熱插拔功率分布 Pos VltgInt Prot Dev/Hotswap Cntrlr RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS2482PW | 制造商:Texas Instruments 功能描述:Hot Swap Controller 1-CH 80V 20-Pin TSSOP Tube 制造商:Texas Instruments 功能描述:IC CTRLR HOT SWAP 9-36V 20TSSOP 制造商:Texas Instruments 功能描述:36V Hotswap Cntlr w/ Digital Pwr Monitor |
| TPS2482PWR | 制造商:Texas Instruments 功能描述:Hot Swap Controller 1-CH 80V 20-Pin TSSOP T/R 制造商:Texas Instruments 功能描述:36V Hotswap Cntlr w/ Digital Pwr Monitor |
| TPS2483EVM-157 | 功能描述:電源管理IC開發工具 TPS2483 EVAL MOD RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS2483PW | 功能描述:Hot Swap Controller, Monitor 1 Channel General Purpose 20-TSSOP 制造商:texas instruments 系列:- 包裝:管件 零件狀態:有效 類型:熱交換控制器，監控器 通道數:1 內部開關:無 應用:通用 特性:自動重試，I2C，UVLO 可編程特性:限流，故障超時 電壓 - 電源:9 V ~ 80 V 電流 - 輸出（最大值）:- 工作溫度:-40°C ~ 85°C 電流 - 電源:2mA 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應商器件封裝:20-TSSOP 功能引腳:EN，PG，PROG，TIMER 標準包裝:70 |
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