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参数资料
| 型号： | TPS62000YEGT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1.6 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, BGA12 |
| 封装： | DSBGA-12 |
| 文件页数： | 6/26页 |
| 文件大小： | 878K |
| 代理商： | TPS62000YEGT |
2
O
I
L
O
L(max)
O(max)
V
1
V
I
I = V
I
L
f
-
D
=
+
(4)
OUTPUT CAPACITOR SELECTION
1
2
3
O
I
RMS(C )
O
V
1
V
I
= V
L
f
-
(5)
O
I
O
V
1
V
1
V
= V
ESR
L
8
C
f
-
D
+
÷
è
(6)
SLVS294E – SEPTEMBER 2000 – REVISED AUGUST 2008 ........................................................................................................................................... www.ti.com
Where:
= Switching frequency (750 kHz typical)
L = Inductor value
ΔIL = Peak-to-peak inductor ripple current
IL(max) = Maximum inductor current
The highest inductor current occurs at maximum VI.
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 = VIN and 900 mA with ILIM = GND. See Table 1 for recommended inductors.
Table 1. Tested Inductors
OUTPUT CURRENT
INDUCTOR VALUE
COMPONENT SUPPLIER
COMMENTS
0 mA to 600 mA
10
H
Coilcraft DO3316P-103
High efficiency
Coilcraft DT3316P-103
Sumida CDR63B-100
Sumida CDRH5D28-100
Coilcraft DO1608C-103
Smallest solution
Sumida CDRH4D28-100
0 mA to 300 mA
10
H
Coilcraft DO1608C-103
High efficiency
Murata LQH4C100K04
Smallest solution
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.
Table 2. Capacitor Selection
OUTPUT VOLTAGE RANGE
OUTPUT CAPACITOR
OUTPUT CAPACITOR ESR
1.8 V
≤ VI ≤ 5.5 V
Co ≥ 10 F
ESR
≤ 120 m
0.8 V
≤ VI < 1.8 V
Co ≥ 47 F
ESR > 50 m
See Table 3 for recommended capacitors.
If an output capacitor is selected with an ESR value
≤ 120 m, its RMS ripple current rating always meets the
application requirements. Just for completeness, the RMS ripple current is calculated as:
The overall output ripple voltage is the sum of the voltage spike caused by the output capacitor ESR plus the
voltage ripple caused by charge and discharging the output capacitor:
Where the highest output voltage ripple occurs at the highest input voltage VI.
14
Copyright 2000–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS62000, TPS62001, TPS62003 TPS62004, TPS62005, TPS62006 TPS62007, TPS62008
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| TPS62000YZGR | 功能描述:开关变换器、稳压器与控制器 Adj 600-mA 95% Eff Step-Down Converter RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| TPS62000YZGT | 功能描述:开关变换器、稳压器与控制器 Adj 600-mA 95% Eff Step-Down Conv RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| TPS62001DGS | 功能描述:直流/直流开关调节器 0.9V Out 600mA Step-Down Con RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS62001DGSG4 | 功能描述:直流/直流开关调节器 0.9V Out 600mA Step-Down Con RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS62001DGSR | 功能描述:开关变换器、稳压器与控制器 0.9V Out 600mA Step-Down Con RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
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