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參數(shù)資料
| 型號： | TPS24720RGTT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC16 |
| 封裝： | 3 X 3 MM, GREEN, PLASTIC, QFN-16 |
| 文件頁數(shù)： | 7/37頁 |
| 文件大?。?/td> | 2258K |
| 代理商： | TPS24720RGTT |
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SLVSAL1B
– MARCH 2011 – REVISED MAY 2011
SYSTEM OPERATION
INTRODUCTION
The TPS24720 provides all the features needed for a positive hot-swap controller. These features include:
Undervoltage lockout
Adjustable (system-level) enable
Turn-on inrush limiting
High-side gate drive for an external N-channel MOSFET
MOSFET protection by power limiting
Adjustable overload timeout, also called an electronic circuit breaker
Charge-complete indicator for downstream converter coordination
A choice of latch or automatic restart mode
A low-power disable mode accessed by holding ENSD low
MOSFET short detection
Load overvoltage protection
The typical application diagram, shown on the front page of this datasheet, and oscilloscope plots, shown in
Figure 29 through Figure 31 and Figure 33 through Figure 36, demonstrate many of the functions described
previously.
BOARD PLUG-IN
Figure 29 and Figure 30 illustrate the inrush current that flows when a hot swap board under the control of the
TPS24720 is plugged into a system bus. Only the bypass capacitor charge current and small bias currents are
evident when a board is first plugged in. The TPS24720 is held inactive for a short period while internal voltages
stabilize. In this short period, GATE, PROG, and TIMER are held low and PGb, FLTb, and FFLTb are held
open-drain. When the voltage on the internal VCC rail exceeds approximately 1.5 V, the power-on reset (POR)
circuit initializes the TPS24720 and a start-up cycle is ready to take place.
GATE, PROG, TIMER, PGb, FLTb and FFTb are released after the internal voltages have stabilized and the
external EN (enable) thresholds have been exceeded. The part begins sourcing current from the GATE pin to
turn on MOSFET M1. The TPS24720 monitors both the drain-to-source voltage across MOSFET M1 and the
drain current passing through it. Based on these measurements, the TPS24720 limits the drain current by
controlling the gate voltage so that the power dissipation within the MOSFET does not exceed the power limit
programmed by the user. The current increases as the voltage across the MOSFET decreases until finally the
current reaches the current limit ILIM.
Copyright
2011, Texas Instruments Incorporated
15
Product Folder Link(s): TPS24720
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| TPS24740EVM-596 | 功能描述:IC CTRLR HOT SWAP 2.5-18V 16QFN 制造商:texas instruments 系列:- 零件狀態(tài):在售 主要用途:電源管理，熱交換控制器 嵌入式:- 使用的 IC/零件:TPS24740 主要屬性:- 輔助屬性:- 所含物品:板 標(biāo)準(zhǔn)包裝:1 |
| TPS24740RGET | 功能描述:Hot Swap Controller, OR Controller 1 Channel General Purpose 24-VQFN (4x4) 制造商:texas instruments 系列:- 包裝:剪切帶（CT） 零件狀態(tài):有效 類型:熱交換控制器，OR 控制器 通道數(shù):1 內(nèi)部開關(guān):無 應(yīng)用:通用 特性:閉鎖故障，UVLO 可編程特性:限流，故障超時，OVP，開啟電壓 電壓 - 電源:2.5 V ~ 18 V 電流 - 輸出（最大值）:- 工作溫度:-40°C ~ 125°C 電流 - 電源:4.2mA 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商器件封裝:24-VQFN（4x4） 功能引腳:ENHS，ENOR，F(xiàn)LTb，F(xiàn)STP，IMON，IMONBUF，OV，PGHS，PLIM，RVSNP，RVSNM，SENM，SET，STAT，TFLT，TINR 標(biāo)準(zhǔn)包裝:1 |
| TPS24741RGET | 功能描述:Hot Swap Controller, OR Controller 1 Channel General Purpose 24-VQFN (4x4) 制造商:texas instruments 系列:- 包裝:剪切帶（CT） 零件狀態(tài):有效 類型:熱交換控制器，OR 控制器 通道數(shù):1 內(nèi)部開關(guān):無 應(yīng)用:通用 特性:自動重試，UVLO 可編程特性:限流，故障超時，OVP，開啟電壓 電壓 - 電源:2.5 V ~ 18 V 電流 - 輸出（最大值）:- 工作溫度:-40°C ~ 125°C 電流 - 電源:4.2mA 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商器件封裝:24-VQFN（4x4） 功能引腳:ENHS，ENOR，F(xiàn)LTb，F(xiàn)STP，IMON，IMONBUF，OV，PGHS，PLIM，RVSNP，RVSNM，SENM，SET，STAT，TFLT，TINR 標(biāo)準(zhǔn)包裝:1 |
| TPS24742EVM-667 | 功能描述:TPS24742 - Power Management, Hot Swap Controller Evaluation Board 制造商:texas instruments 系列:- 零件狀態(tài):有效 主要用途:電源管理，熱交換控制器 嵌入式:- 使用的 IC/零件:TPS24742 主要屬性:- 輔助屬性:LED 狀態(tài)指示器 所含物品:板 標(biāo)準(zhǔn)包裝:1 |
| TPS24742RGET | 功能描述:Hot Swap Controller, OR Controller 1 Channel General Purpose 24-VQFN (4x4) 制造商:texas instruments 系列:- 包裝:剪切帶（CT） 零件狀態(tài):有效 類型:熱交換控制器，OR 控制器 通道數(shù):1 內(nèi)部開關(guān):無 應(yīng)用:通用 特性:閉鎖故障，UVLO 可編程特性:限流，故障超時，OVP，開啟電壓 電壓 - 電源:2.5 V ~ 18 V 電流 - 輸出（最大值）:- 工作溫度:-40°C ~ 125°C 電流 - 電源:4.2mA 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商器件封裝:24-VQFN（4x4） 功能引腳:ENHS，ENOR，F(xiàn)LTb，F(xiàn)STP，IMON，IMONBUF，OV，PGHS，PLIM，RVSNP，RVSNM，SENM，SET，STAT，TFLT，TINR 標(biāo)準(zhǔn)包裝:1 |
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