參數(shù)資料
型號(hào): TPS5410MDREP
廠商: TEXAS INSTRUMENTS INC
元件分類(lèi): 穩(wěn)壓器
英文描述: 4.6 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO8
封裝: GREEN, PLASTIC, SOIC-8
文件頁(yè)數(shù): 7/25頁(yè)
文件大?。?/td> 759K
代理商: TPS5410MDREP
F
=
LC
1
2
L
p
O
xC
(EFF)
Fp1=500000x
VO
FLC
Fz1=0.7xF
LC
Fz2=2.5xF
LC
C7=
1
2
xFp1x(R1||R2)
p
R3=
1
2
xFz1xC7
p
C6=
1
2
xFz2xR1
p
www.ti.com ......................................................................................................................................................................................... SLVS910 – SEPTEMBER 2009
External Compensation Network
When using ceramic output capacitors, additional circuitry is required to stabilize the closed loop system. For this
circuit the external components are R3, C5, C6 and C7. To determine the value of these components, first
calculate the LC resonant frequency of the output filter:
(14)
For this example the effective resonant frequency is calculated as 2306 Hz
The network composed of R1, R2, R3, C5, C6 and C7 has two poles and two zeros that are used to tailor the
overall response of the feedback network to accommodate the use of the ceramic output capacitors. The pole
and zero locations are given by the following equations:
(15)
(16)
(17)
The final pole is located at a frequency too high to be of concern. The values for R1 and R2 are fixed by the 5-V
output voltage as calculated using Equation 12. Now the values of R3, C5, C6 and C7 are determined using
(18)
(19)
(20)
For this design, using the closest standard values, C7 is 0.056
μF, R3 is 1.76 k and C6 is 2700 pF. C5 is
added to improve load regulation performance. It is effectively in parallel with C6 in the location of the second
pole frequency, so it should be small in relationship to C6. C5 should be less the 1/10 the value of C6. For this
example, 150 pF works well.
For additional information on external compensation of the TPS5410 or other wide voltage range SWIFT devices,
see SLVA237 Using TPS5410/20/30/31 With Aluminum/Ceramic Output Capacitors.
Copyright 2009, Texas Instruments Incorporated
15
Product Folder Link(s): TPS5410-EP
相關(guān)PDF資料
PDF描述
TPS54429ERSAT 0.01 A SWITCHING REGULATOR, PQCC16
TPS60201DGSRG4 SWITCHED CAPACITOR REGULATOR, 400 kHz SWITCHING FREQ-MAX, PDSO10
TPS62000 "Adjustable
TPS65166RHAR SPECIALTY ANALOG CIRCUIT, PQCC40
TPS65270RGET DUAL SWITCHING CONTROLLER, 1400 kHz SWITCHING FREQ-MAX, PQCC24
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS5410-Q1 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:1-A, WIDE INPUT RANGE, STEP-DOWN SWIFTa?¢ CONVERTER
TPS5410QDRQ1 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 AC 5.5-36V,1A,500kHz 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
TPS54110 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:SWIFT Converter Product Portfolio
TPS54110EVM-044 功能描述:電源管理IC開(kāi)發(fā)工具 3-6Vin DC/DC Conv RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類(lèi)型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
TPS54110EVM-044 制造商:Texas Instruments 功能描述:EVAL BOARD, TPS54110 ADJ 1.5A STEP-DOWN