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參數(shù)資料
| 型號： | TPS6734I |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | FIXED 12-V 120-mA BOOST-CONVERTER SUPPLY |
| 中文描述： | 固定12伏120毫安升壓轉(zhuǎn)換器供電 |
| 文件頁數(shù)： | 9/19頁 |
| 文件大?。?/td> | 285K |
| 代理商： | TPS6734I |
TPS6734I
FIXED 12-V 120-mA BOOST-CONVERTER SUPPLY
SLVS127A – AUGUST 1995 – REVISED JANUARY 1999
9
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
The TPS6734 operates in a boost circuit as shown in Figures 1 and 11. Figure 1 shows the typical application
circuit, which generates 12 V from a nominal 5-V source. The circuit is ideal for processor interface for energy
management, because EN can be controlled by logic signals to place the 12-V source into the shutdown mode
(3-
μ
A current drain) when 12 V is not needed. An example of such an application is a flash memory device that
requires 12 V for the erase cycle.
discontinuous mode
The circuit shown in Figure 1 operates in discontinuous mode over most of the range of input voltage and output
current. In discontinuous mode, current through the inductor begins at zero, rises to a peak value, then ramps
down to zero each cycle as shown by the voltage and current waveforms in Figure 8. The ringing in the voltage
waveform on OUT results from a resonance between the inductor and the power switch capacitance and is
normal for discontinuous operation.
0
0
2
4
6
t – Time –
μ
s
8
10
5
15
DISCONTINUOUS MODE
20
12
14
16
18
10
1
0.5
0
I
VI = 5 V
VO = 12 V
IL = 50 mA
V
Figure 8
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS6734ID | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 120mA 12V RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS6734IDG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 120mA 12V RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS6734IDR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 120mA 12V RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS6734IDRG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Fixed 12-V 120-MA Boost-Conv Supply RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS6734IP | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 120mA 12V RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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