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| 型号： | TPS62000YEG |
| 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： | 9/29页 |
| 文件大小： | 744K |
| 代理商： | TPS62000YEG |
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TPS62000, TPS62001, TPS62002, TPS62003
TPS62004, TPS62005, TPS62006, TPS62007, TPS62008
HIGHEFFICIENCY STEPDOWN LOW POWER DCDC CONVERTER
SLVS294D SEPTEMBER 2000 REVISED MARCH 2006
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
output capacitor selection (continued)
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:
I
RMS(Co)
+ V
O
1–
V
O
V
I
L
1
2
3
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:
DV
O +
V
O
1–
V
O
V
I
L
1
8
Co
)
ESR
Where the highest output voltage ripple occurs at the highest input voltage VI.
Table 2. Tested Capacitors
CAPACITOR VALUE
ESR/m
COMPONENT SUPPLIER
COMMENTS
10
F
50
Taiyo Yuden
JMK316BJ106KL
Ceramic
47
F
100
Sanyo 6TPA47M
POSCAP
68
F
100
Spraque
594D686X0010C2T
Tantalum
input capacitor selection
Because of the nature of the buck converter having a pulsating input current, a low ESR input capacitor is
required for best input voltage filtering and minimizing the interference with other circuits caused by high input
voltage spikes.
The input capacitor should have a minimum value of 10
F and can be increased without any limit for better input
voltage filtering.
The input capacitor should be rated for the maximum input ripple current calculated as:
I
RMS +
I
O(max)
V
O
V
I
1–
V
O
V
I
The worst case RMS ripple current occurs at D = 0.5 and is calculated as:
I
RMS +
I
O
2
.
Ceramic capacitor show a good performance because of their low ESR value, and they are less sensitive
against voltage transients compared to tantalum capacitors.
Place the input capacitor as close as possible to the input pin of the IC for best performance.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS62000YEGR | 功能描述:开关变换器、稳压器与控制器 Adj 600mA Hi-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 |
| TPS62000YEGT | 功能描述:开关变换器、稳压器与控制器 Adj 600mA Hi-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 |
| 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 |
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