參數(shù)資料
型號(hào): 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(píng)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(píng)估模塊)
文件頁(yè)數(shù): 12/34頁(yè)
文件大?。?/td> 827K
代理商: TPS54980EVM-022
Modifications
1-4
1.3
Modifications
The TPS54980EVM-022 is designed to demonstrate the small size that can
be attained when designing with the TPS54980, however many of the
features, which allow for extensive modifications, have been omitted from this
EVM.
1.3.1
Changing Output Voltage
By changing the value of R
2
, the output voltage can be set to a value in the
range of 0.9 V to 2.5 V. The value of R
2
for a specific output voltage can be
calculated by using Equation 11. Table 13 lists the values for R
2
for some
common output voltages.
Equation 11.
R2
10 k
0.891 V
VO
0.891 V
Table 13.Output Voltage Programming
Output Voltage (V)
R
2
Value (k
1000
0.9
1.2
28.7
1.5
14.7
1.8
9.76
2.5
5.49
The minimum output voltage is limited by the minimum controllable on-time of
the device, 200 ns, and is dependent upon the duty cycle and operating
frequency. The approximate minimum output voltage can be calculated using
Equation 12:
Equation 12.
VOUTMIN
200 nsec
s
VINMAX
1.3.2
Switching Frequency
Switching frequency can be trimmed to any value between 280 kHz and
700 kHz by changing the value of R4. Decreasing the switching frequency
results in increased output ripple unless the value of L1 is increased. A plot of
the value of RT versus the switching frequency is shown in Figure 11.
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TPS54980PWP 功能描述:直流/直流開(kāi)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(kāi)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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TPS549A20EVM-737 功能描述:EVALUATION MODULE 制造商:texas instruments 系列:* 零件狀態(tài):在售 標(biāo)準(zhǔn)包裝:1