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參數資料
| 型號： | TPS24711DGSR |
| 廠商： | Texas Instruments |
| 文件頁數： | 20/34頁 |
| 文件大小： | 2792K |
| 描述： | IC CTRLR HOT SWAP 2.5-18V 10MSOP |
| 標準包裝： | 1 |
| 類型： | 熱交換控制器 |
| 應用： | 通用 |
| 內部開關： | 無 |
| 電流限制： | 可調 |
| 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） |
| 供應商設備封裝： | 10-MSOP |
| 包裝： | 標準包裝 |
| 其它名稱： | 296-28562-6 |
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TPS24710,TPS24711
TPS24712,TPS24713
SLVSAL2E JANUARY 2011REVISED NOVEMBER 2013
www.ti.com
Figure 33. Latch After Overload Fault
PG, FLT, PGb, FLTb, AND TIMER OPERATIONS
The open-drain PG/PGb (PG is for TPS24712/13 and PGb is for TPS24710/11) output provides a deglitched
end-of-inrush indication based on the voltage across M
1
. PG/PGb is useful for preventing a downstream dc/dc
converter from starting while its input capacitor C
OUT
is still charging. PG goes active-high and PGb goes active-
low about 3.4 ms after C
OUT
is charged. This delay allows M
1
to fully turn on and any transients in the power
circuits to end before the converter starts up. This type of sequencing prevents the downstream converter from
demanding full current before the power-limiting engine allows the MOSFET to conduct the full current set by the
current limit I
LIM
. Failure to observe this precaution may prevent the system from starting. The pullup resistor
shown on the PG/PGb pin in the typical application diagram on the front page is illustrative only; the actual
connection to the converter depends on the application. The PG/PGb pin may indicate that inrush has ended
before the MOSFET is fully enhanced, but the downstream capacitor will have been charged to substantially its
full operating voltage. Care should be taken to ensure that the MOSFET on-resistance is sufficiently small to
ensure that the voltage drop across this transistor is less than the minimum power-good threshold of 140 mV.
After the hot-swap circuit successfully starts up, the PG pin can return to a low-impedance status and PGb to
high-impedance status whenever the drain-to-source voltage of MOSFET M
1
exceeds its upper threshold of
340 mV, which presents the downstream converters a warning flag. This flag may occur as a result of overload
fault, output short fault, input overvoltage, higher die temperature, or the GATE shutdown by UVLO and EN.
FLT/FLTb (FLT is for TPS24712/13 and FLTb is for TPS24710/11) is an indicator that the allowed fault-timer
period during which the load current can exceed the programmed current limit (but not the fast-trip threshold) has
expired. The fault timer starts when a current of approximately 10 糀 begins to flow into the external capacitor,
C
T
, and ends when the voltage of C
T
reaches TIMER upper threshold, i.e., 1.35 V. FLT goes high and FLTb pulls
low at the end of the fault timer. Otherwise, FLT assumes a low-impedance state and FLTb a high-impedance
state.
The fault-timer state requires an external capacitor C
T
connected between the TIMER pin and GND pin. The
length of the fault timer is the charging time of C
T
from 0 V to its upper threshold of 1.35 V. The fault timer begins
to count under any of the following three conditions:
1. In the inrush mode, TIMER begins to source current to the timer capacitor, C
T
, when MOSFET M
1
is
enabled. TIMER begins to sink current from the timer capacitor, C
T
when V
(GATE VCC)
exceeds the timer
20
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Copyright ?20112013, Texas Instruments Incorporated
Product Folder Links: TPS24710 TPS24711 TPS24712 TPS24713
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| TPS24711EVM-004 | 功能描述:電源管理IC開發工具 TPS24711 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 |
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| TPS24713DGS | 功能描述:熱插拔功率分布 2.5-18V Hi Eff Hot- Swap Controller 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 |
| TPS24713DGSR | 功能描述:熱插拔功率分布 2.5-18V Hi Eff Hot- Swap Controller 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 |
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