參數(shù)資料
型號： TPS54326PWPR
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 5.5 A SWITCHING REGULATOR, 700 kHz SWITCHING FREQ-MAX, PDSO14
封裝： GREEN, PLASTIC, HTSSOP-14
文件頁數(shù)： 4/26頁
文件大?。?/td> 911K
代理商： TPS54326PWPR
V
=
OUT
0.765
(1+ R1
R2
)
V
=
V
OUT
(0.763+0.0017
)
(1+ R1
R
2
)
SLVSA13D
– OCTOBER 2009 – REVISED FEBRUARY 2011
DESIGN GUIDE
Step By Step Design Procedure
To begin the design process, the following application parameters must be known:
Input voltage range
Output voltage
Output current
Output voltage ripple
Input voltage ripple
Figure 13 shows the schematic diagram for this design example.
Figure 13. Schematic Diagram
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 light loads consider using larger value resistors, too high of resistance is more
susceptible to noise and voltage errors from the VFB input current are 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
12
2009–2011, Texas Instruments Incorporated
Product Folder Link(s) :TPS54326
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS54326RGTR 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 4.5-18V Inp,3A Sync Step-Down SWIFT RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
TPS54326RGTT 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 4.5-18V Inp,3A Sync Step-Down SWIFT RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
TPS54327 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-A OUTPUT SINGLE SYNCHRONOUS STEP DOWN SWITCHER WITH INTEGRATED FET (SWIFTTM )
TPS54327DDA 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 4.5-18Vin,3A Sync Step-Down Cnvrtr RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
TPS54327DDAR 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 4.5-18Vin,3A Sync Step-Down Cnvrtr RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
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