參數(shù)資料
型號(hào)： TPS61004DGSR
廠(chǎng)商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： 1.3 A SWITCHING REGULATOR, 840 kHz SWITCHING FREQ-MAX, PDSO10
封裝： GREEN, PLASTIC, MSOP-10
文件頁(yè)數(shù)： 8/25頁(yè)
文件大?。?/td> 456K
代理商： TPS61004DGSR
TPS61000, TPS61001, TPS61002, TPS61003, TPS61004, TPS61005, TPS61006, TPS61007
SINGLE- AND DUAL-CELL BOOST CONVERTER WITH START-UP INTO FULL LOAD
SLVS279C – MARCH 2000 – REVISED APRIL 2003
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
With those parameters it is possible to calculate the value for the inductor:
L
+
V
BAT
x V
OUT
– V
BAT
I
L
xfx V
OUT
(4)
Parameter f is the switching frequency and
IL is the ripple current in the inductor, i.e., 20% x IL.
In this example, the desired inductor has the value of 12
H. With this calculated value and the calculated cur-
rents, it is possible to chose a suitable inductor. Care has to be taken that load transients and losses in the circuit
can lead to higher currents as estimated in equation 3. Also, the losses in the inductor caused by magnetic hys-
teresis losses and copper losses are a major parameter for total circuit efficiency.
The following inductors from different suppliers were tested. All work with the TPS6100x converter within their
specified parameters:
Table 1. Recommended Inductors
VENDOR
PART NUMBER
Coilcraft
DO1608P Series
DS1608P Series
DO3308 Series
Coiltronics
UP1B Series
UP2B Series
Murata
LQH3N Series
Sumida
CD43 Series
CD54 Series
CDR74B Series
TDK
NLC453232T Series
capacitor selection
The major parameter necessary to define the output capacitor is the maximum allowed output voltage ripple of
the converter. This ripple is determined by two parameters of the capacitor, the capacitance and the ESR. It is
possible to calculate the minimum capacitance needed for the defined ripple, supposing that the ESR is zero.
C
min +
I
OUT
x V
OUT
– V
BAT
fx
VxV
OUT
(5)
Parameter f is the switching frequency and
V is the maximum allowed ripple.
With a chosen ripple voltage of 15 mV, a minimum capacitance of 10
F is needed. The total ripple will be larger
due to the ESR of the output capacitor. This additional component of the ripple can be calculated using the fol-
lowing equation:
V
ESR +
I
OUT
xR
ESR
(6)
相關(guān)PDF資料
PDF描述
TPS61007DGS 1.3 A SWITCHING REGULATOR, 840 kHz SWITCHING FREQ-MAX, PDSO10
TPS61006DGSR 1.3 A SWITCHING REGULATOR, 840 kHz SWITCHING FREQ-MAX, PDSO10
TPS61005DGSR 1.3 A SWITCHING REGULATOR, 840 kHz SWITCHING FREQ-MAX, PDSO10
TPS61001DGS 1.3 A SWITCHING REGULATOR, 840 kHz SWITCHING FREQ-MAX, PDSO10
TPS61002DGSG4 1.3 A SWITCHING REGULATOR, 840 kHz SWITCHING FREQ-MAX, PDSO10
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS61004DGSRG4 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 Lo-In Voltage Boost Converter RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
TPS61005 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:SINGLE- AND DUAL-CELL BOOST CONVERTER WITH START-UP INTO FULL LOAD
TPS61005DGS 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 3.0V 100mA Boost 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
TPS61005DGSG4 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 Lo-In Voltage Boost 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
TPS61005DGSR 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 Lo-In Voltage Boost 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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