參數(shù)資料
型號(hào)： TPS54429ERSAT
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 0.01 A SWITCHING REGULATOR, PQCC16
封裝： PLASTIC, QFN-16
文件頁(yè)數(shù)： 5/26頁(yè)
文件大?。?/td> 907K
代理商： TPS54429ERSAT
U1
TPS54429EPWP
V
=
OUT
0.765
(1+
R1
R2
)
V
=
V
OUT
OUT_SET
(0.763 + 0.0017
)
1 +
( R1
R2
)
1
2
P
OUT
F
L
C
p
=
SLVSAS0 –FEBRUARY 2011
DESIGN GUIDE
Step By Step Design Procedure
To begin the design process, you must know a few application parameters:
Input voltage range
Output voltage
Output current
Output voltage ripple
Input voltage ripple
Figure 14. Schematic Diagram for This Design Example
Output Voltage Resistors Selection
The output voltage is set with a resistor divider from the output node to the VFB pin. It is recommended to use
1% tolerance or better divider resistors. Start by using Equation 3 and Equation 4 to calculate VOUT
To improve efficiency at very light loads consider using larger value resistors, too high of resistance will be more
susceptible to noise and voltage errors from the VFB input current will be more noticeable
For output voltage from 0.76 V to 2.5 V:
(3)
For output voltage over 2.5 V:
(4)
Where:
VOUT_SET = Target VOUT voltage
Output Filter Selection
The output filter used with the TPS54429E is an LC circuit. This LC filter has double pole at:
(5)
2011, Texas Instruments Incorporated
13
Product Folder Link(s) :TPS54429E
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS54429EVM-608 功能描述:電源管理IC開發(fā)工具 TPS54429 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
TPS54429PWP 功能描述:直流/直流開關(guān)調(diào)節(jié)器 7V-18Vin,4.5A Sync Step-Down DCAP2 Mode 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
TPS54429PWPR 功能描述:直流/直流開關(guān)調(diào)節(jié)器 7V-18Vin,4.5A Sync Step-Down DCAP2 Mode 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
TPS54478 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.95-V to 6-V Input, 4-A Output, 2-MHz, Synchronous Step-Down
TPS54478EVM-037 功能描述:電源管理IC開發(fā)工具 TPS54478 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
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