參數(shù)資料
型號(hào)： TPS62000YEG
廠商： Texas Instruments, Inc.
元件分類： DC/DC變換器
英文描述： HIGH-EFFICIENCY STEP-DOWN LOW POWER DC-DC CONVERTER
中文描述： 高效率降壓型小功率DC - DC變換器
文件頁(yè)數(shù)： 16/25頁(yè)
文件大小： 475K
代理商： TPS62000YEG
SLVS294C SEPTEMBER 2000 REVISED SEPTEMBER 2003
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
inductor selection (continued)
In order to avoid saturation of the inductor, the inductor should be rated at least for the maximum output current
plus the inductor ripple current which is calculated as:
I
L
VO
1–
VO
VI
L
I
L(max)
I
O(max)
I
L
2
Where:
= Switching frequency (750 kHz typical)
L = Inductor value
I
L
= Peak-to-peak inductor ripple current
I
L(max)
= Maximum inductor current
The highest inductor current occurs at maximum V
I
.
A more conservative approach is to select the inductor current rating just for the maximum switch current of the
TPS6200x which is 1.6 A with ILIM = V
IN
and 900 mA with ILIM = GND. See table 1 for recommended inductors.
Table 1. Tested Inductors
OUTPUT CURRENT
0 mA to 600 mA
INDUCTOR VALUE
10
μ
H
COMPONENT SUPPLIER
Coilcraft DO3316P-103
Coilcraft DT3316P-103
Sumida CDR63B-100
Sumida CDRH5D28-100
Coilcraft DO1608C-103
Sumida CDRH4D28-100
COMMENTS
High efficiency
Smallest solution
0 mA to 300 mA
10
μ
H
Coilcraft DS1608C-103
High efficiency
muRata LQH4C100K04
Smallest solution
output capacitor selection
For best performance, a low ESR output capacitor is needed. At output voltages greater than 1.8 V, ceramic
output capacitors can be used to show the best performance. Output voltages below 1.8 V require a larger
output capacitor and ESR value to improve the performance and stability of the converter.
Capacitor Selection
OUTPUT VOLTAGE RANGE
1.8 V
≤
VI
≤
5.5 V
0.8 V
≤
VI
<
1.8 V
OUTPUT CAPACITOR
Co
≥
10
μ
F
Co
≥
47
μ
F
OUTPUT CAPACITOR ESR
ESR
≤
120 m
ESR > 50 m
See Table 2 for recommended capacitors.
相關(guān)PDF資料
PDF描述
TPS62000YEGR HIGH-EFFICIENCY STEP-DOWN LOW POWER DC-DC CONVERTER
TPS62000YEGT HIGH-EFFICIENCY STEP-DOWN LOW POWER DC-DC CONVERTER
TPS62001DGSR HIGH-EFFICIENCY STEP-DOWN LOW POWER DC-DC CONVERTER
TPS62020EVM 0.6-A High-Efficiency Step-Down Converters Evaluation Module(0.6A高效率降壓轉(zhuǎn)換器TPS62020評(píng)估模塊)
TPS62102EVM TPS62102 Low-Power High-Efficiency Buck Converter Evaluation Module(低功耗，高效率降壓轉(zhuǎn)換器TPS62102評(píng)估模塊)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS62000YEGR 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Adj 600mA Hi-Eff Step-Down 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
TPS62000YEGT 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Adj 600mA Hi-Eff Step-Down 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
TPS62000YZGR 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Adj 600-mA 95% Eff Step-Down 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
TPS62000YZGT 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Adj 600-mA 95% Eff Step-Down Conv 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
TPS62001DGS 功能描述:直流/直流開關(guān)調(diào)節(jié)器 0.9V Out 600mA Step-Down Con 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
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