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參數(shù)資料
| 型號： | TPS54350EVM-235 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 3-Amp SWIFT Regulator Evaulation Module(3A SWIFT穩(wěn)壓器TPS54350的評估模塊) |
| 中文描述： | 3安培的SWIFT穩(wěn)壓Evaulation模塊條第（3A SWIFT的穩(wěn)壓器TPS54350的評估模塊） |
| 文件頁數(shù)： | 11/31頁 |
| 文件大?。?/td> | 551K |
| 代理商： | TPS54350EVM-235 |
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Modifications
1-4
1.3
Modifications
The TPS54350EVM235 is designed to demonstrate the small size that can
be attained when designing with the TPS54350, so many of the features,
which allow for extensive modifications, have been omitted from this EVM.
1.3.1
Output Voltage Setpoint
Changing the value of R2 can change the output voltage in the range of 0.9 V
to 5 V. The value of R2 for a specific output voltage can be calculated by using
Equation 11. Table 13 list the values for R2 for some common output
voltages.
Equation 11.
R2
1 k
0.891 V
VO
0.891 V
Table 13.Output Voltage Programming
Output Voltage (V)
R
2
Value ( )
2.87 k
1.2
1.5
1.47 k
1.8
976
2.5
549
3.3
374
5.0
221
The minimum output voltage is limited by the minimum controllable on time of
the device, 125 ns, and is dependent upon the duty cycle and operating
frequency. The approximate minimum output voltage can be calculated using
Equation 12:
Equation 12.
V
O(min)
= 125 nsec
×
s
×
V
I(max)
1.3.2
Switching Frequency
The switching frequency may be trimmed to any value between 250 kHz and
700 kHz by changing the value of R4. The switching frequency can also be set
to preprogrammed values of 250 kHz by shorting the RT pin to AGND, or
500 kHz by floating the RT pin. Decreasing the switching frequency results in
increased output ripple unless the value of L1 is increased.
1.3.3
Input Filter
An onboard electrolytic input capacitor may be added at C1.
1.3.4
UVLO Programming
The TPS54350 is provided with an internal voltage divider from VIN to AGND.
These start and stop thresholds are given in Table 14.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS54350MPWPREP | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Mil Enh 4.5V-20V 3A Out Synch-Buck PWM 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 |
| TPS54350MPWPREPG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 4.5 to 20V Input,3A Step Down 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(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS54350PWP | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 4.5 to 20V Inp 3A Step-Down 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(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS54350PWP | 制造商:Texas Instruments 功能描述:IC's |
| TPS54350PWPG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 4.5 to 20V Inp 3A Step-Down 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(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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