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參數(shù)資料
| 型號： | TPS2393APWRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14 |
| 封裝： | GREEN, PLASTIC, TSSOP-14 |
| 文件頁數(shù)： | 16/30頁 |
| 文件大小： | 665K |
| 代理商： | TPS2393APWRG4 |
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TPS2393A
SLUS610 JULY 2004
23
www.ti.com
APPLICATION INFORMATION
Using the PG Output
The PG output is an indication of the load power status. PG is asserted after a load turn-on, once the load voltage
has ramped up to the input dc level, as indicated by a small VDS drop across the pass FET. The load voltage
is sensed by the DRAINSNS pin, which is connected to the pass FET drain through a small-signal blocking
diode. Also, the TPS2393A first confirms that the full programmed sourcing current (typically 40 mV/RSENSE)
is available to the load electronics prior to declaring power good. The PG status is latched once the power
conditions are met, so that momentary current limiting operation due to input supply transients is not reflected
in this output status. This pin can be used to enable downstream converters, provide a visual indication of load
power good, or be level-translated or optocoupled to provide status reporting back to the host controller.
When using PG to drive the enable input of a converter, care should be taken not to exceed the manufacturer’s
maximum voltage ratings for the pin. When asserted, the output driver pulls the PG pin to the VIN pin potential.
Because this status in latched, subsequent current limit operation of the circuit could result in pulling the enable
input below the brick’s VIN potential during the fault timeout period. If the brick does not provide an internal
clamp on this pin, a diode can be connected as shown in Figure 28 to externally limit the swing below VIN. In
either case, a resistor (R7 in Figure 28) should be used to limit the current pulled from this pin, protecting both
the converter and the PG output. R7 should be large enough to limit the PG input current to less than 10 mA,
while still allowing the brick enable to be pulled below its maximum VIL threshold.
10
A
UDG20177
GATE
12
13
10
9
ISENS
DRNSNS
RSENSE
VOUT+
VOUT
VIN+
VIN
DC/DC
CONVERTER
Q1
8
VIN
D1
BAS19
11
RTN
D3
VDD
R7
43 k
TPS2393A*
CIN
EN
48
V
GND
PG
*Additional details omitted for clarity.
Figure 26. TPS2393A Active-Low Converter Enable
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相關(guān)代理商/技術(shù)參數(shù) |
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| TPS2393DBT | 功能描述:熱插拔功率分布 Full Featured -48V Industral Temp. RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS2393DBTG4 | 功能描述:熱插拔功率分布 Full Featured -48V Industral Temp. RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS2393DBTR | 功能描述:熱插拔功率分布 Full Featured -48V Industral Temp. RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS2393DBTRG4 | 功能描述:熱插拔功率分布 -48V Hot Swap G179 Pwr Mgr Ind Temp RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS2393EVM | 功能描述:電源管理IC開發(fā)工具 Simple -48V Hot Swap Contr EVM RoHS:否 制造商:Maxim Integrated 產(chǎn)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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