參數(shù)資料
型號(hào): TPS24711DGSR
廠商: Texas Instruments
文件頁數(shù): 14/34頁
文件大?。?/td> 2792K
描述: IC CTRLR HOT SWAP 2.5-18V 10MSOP
標(biāo)準(zhǔn)包裝: 1
類型: 熱交換控制器
應(yīng)用: 通用
內(nèi)部開關(guān):
電流限制: 可調(diào)
電源電壓: 2.5 V ~ 18 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 10-TFSOP,10-MSOP(0.118",3.00mm 寬)
供應(yīng)商設(shè)備封裝: 10-MSOP
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: 296-28562-6
TPS24710,TPS24711
TPS24712,TPS24713
SLVSAL2E JANUARY 2011REVISED NOVEMBER 2013
www.ti.com
SYSTEM OPERATION
INTRODUCTION
The TPS24710/11/12/13 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 (TPS24710/12) or automatic restart mode (TPS24711/13)
The typical application diagram on the front page of this data sheet, and oscilloscope plots shown in Figure 26
through Figure 28 and Figure 30 through Figure 33, demonstrate many of the functions described previously.
BOARD PLUG IN
Figure 26 and Figure 27 illustrate the inrush current that flows when a hot swap board under the control of the
TPS24710/11/12/13 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 TPS24710/11/12/13 is held inactive, for a short period
while internal voltages stabilize. During this period GATE, PROG, TIMER are held low and PG, FLT, PGb, and
FLTb 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 TPS24710/11/12/13 and a start-up cycle is ready to take place.
GATE, PROG, TIMER, PG, FLT, PGb, and FLTb 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 M
1
. The TPS24710/11/12/13 monitors both the drain-to-source voltage across MOSFET M
1
and the drain current passing through it. Based on these measurements, the TPS24710/11/12/13 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 I
LIM
.
14
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Copyright ?20112013, Texas Instruments Incorporated
Product Folder Links: TPS24710  TPS24711 TPS24712  TPS24713
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