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參數(shù)資料
| 型號： | TPS54980EVM-022 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 9-Amp SWIFT Regulator Evaulation Module(9A SWIFT穩(wěn)壓器TPS54980的評估模塊) |
| 中文描述： | 9放大器模塊的SWIFT穩(wěn)壓Evaulation（第9A SWIFT的穩(wěn)壓器TPS54980的評估模塊） |
| 文件頁數(shù)： | 23/34頁 |
| 文件大?。?/td> | 827K |
| 代理商： | TPS54980EVM-022 |
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Power Up and Down
2-9
Test Setup and Results
2.9
Power Up and Down
The TPS54980 regulator provides different modes for power up and power
down sequencing of the core and I/O voltages. By selecting different ratios for
the resistor divider R6/R7 (see Figure 41), the slope of the core voltage during
power up and down can be set equal to, higher than, or lower than the slope
of the I/O voltage. If the resistors R6 = R1 and R7 = R2, then the core voltage
tracks the I/O voltage. The start up voltage waveform of the
TPS54980EVM-022 for this condition is shown in Figure 211. The waveform
shows that the core voltage regulator tracks the output of the I/O regulator until
the core regulator reaches its nominal 1.8-V level. After that, the core regulator
starts to regulate its output at the preset 1.8-V level. The I/O regulator
continues its ramp up until the voltage reaches the nominal 3.3-V level. The
output voltage waveforms during power up do not depend on load currents.
The output voltage waveforms are powered up by asserting the ENABLE
signal while the input voltage is already applied.
Figure 211.
Power Up with Tracking
VO I/O 500 mV/div
t Time 500
μ
s/div
VO Core 500 mV/div
The power down waveform is shown in Figure 212. During power down, the
output voltage fall time is defined by the output capacitance and load
resistance. In this case the I/O output load resistance has been set to 20
and
the core output load resistance set to 1
. With the I/O output voltage falling
with a slew rate of about 1.25 V/ms, there is essentially no difference between
the core voltage and I/O voltage.
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| TPS54980PWP | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3.3V Inp Sync Buck Converter 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: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS54980PWPG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3.3V Input Synch Buck Converter 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: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS54980PWPR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3.3V Inp Sync Buck Converter 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: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS54980PWPRG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3.3V Inp Sync Buck Converter 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: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS549A20EVM-737 | 功能描述:EVALUATION MODULE 制造商:texas instruments 系列:* 零件狀態(tài):在售 標準包裝:1 |
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