參數(shù)資料
型號(hào)： TPS54383PWPR
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 7 A DUAL SWITCHING CONTROLLER, 375 kHz SWITCHING FREQ-MAX, PDSO14
封裝： GREEN, PLASTIC, HTSSOP-14
文件頁數(shù)： 30/58頁
文件大?。?/td> 1773K
代理商： TPS54383PWPR
www.ti.com
FB
OUT1
FB
V
R2
R4
V
=
-
(32)
FB
OUT2
FB
V
R9
R7
V
=
-
(33)
Compensation Capacitors
fESR(zero)
1
2
C
ESR
=
p
(34)
f
ZERO(desired)
ESR(zero)
R4
R5
1
=
÷
-
÷
÷
÷
è
è
(35)
EQ
1
R
R5
1
R2
R4
=
+
+
÷
÷
÷
è
è
è
(36)
f
EQ
ESR(zero)
1
C8
2
R
=
p
(37)
Input Capacitor Selection
SLUS774B – AUGUST 2007 – REVISED OCTOBER 2007
R2 = R9 = 20 k
V
FB = 0.80 V
R4= 3.80 k (3.83 k standard value is used)
R7= 6.40 k (6.34 k standard value is used)
Checking the ESR zero of the output capacitors:
C = 100 F
ESR = 400 m
ESR(zero) = 3980 Hz
Since the ESR zero of the main output capacitor is less than 20 kHz, an R-C filter is added in parallel with R4
and R7 to compensate for the electrolytic capacitors' ESR and add a zero approximately 40 kHz.
f
ESR(zero) = 4 kHz
f
ESR(desired) = 40 kHz
R4 = 3.83 k
R5 = 424 (422 selected)
R7 = 6.34 k
R8 = 702 (698 selected)
R2 = R9 = 20 k
R
EQ1 = 3.63 k
R
EQ2 = 5.51 k
C8 = 10.9 nF (10 nF selected)
C15 = 7.22 nF (6800 pF selected)
The TPS54383 datasheet recommends a minimum 10-
F ceramic input capacitor on each PVDD pin. These
capacitor must be capable of handling the RMS ripple current of the converter. The RMS current in the input
capacitors is estimated by Equation 38.
36
Copyright 2007, Texas Instruments Incorporated
Product Folder Link(s): TPS54383 TPS54386
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS54383PWPRG4 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3A Non-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(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS54386 制造商:TI 制造商全稱:Texas Instruments 功能描述:SWIFT Converter Product Portfolio
TPS54386EVM 功能描述:電源管理IC開發(fā)工具 TPS54386 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
TPS54386PWP 功能描述:直流/直流開關(guān)調(diào)節(jié)器 DC/DC Controller 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
TPS54386PWP 制造商:Texas Instruments 功能描述:DC/DC Controller
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