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参数资料
| 型号： | TPS61011DGSR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1.3 A SWITCHING REGULATOR, 780 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封装： | GREEN, PLASTIC, MSOP-10 |
| 文件页数： | 10/33页 |
| 文件大小： | 868K |
| 代理商： | TPS61011DGSR |
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C
C1 +
C
OUT
ESR
COUT
R
C
(7)
Layout Considerations
SW
VBAT
LBI
ADEN
EN
VOUT
LBO
FB
COMP
GND
L1
R5
R6
C1
Battery
C2
R1
C3
LBO
R2
R3
C4
OUTPUT
U1
R4
TPS61010, TPS61011
TPS61012, TPS61013
TPS61014, TPS61015, TPS61016
SLVS314D – SEPTEMBER 2000 – REVISED JUNE 2005
For a selected output capacitor of 22 F with an ESR of 0.2
, an R
C of 33 k, the value of CC1 is in the range
of 100 pF.
Table 2. Recommended Compensation Components
OUTPUT CAPACITOR
INDUCTOR[H]
RC[k
]
CC1[pF]
CC2[nF]
CAPACITANCE[F]
ESR[
]
33
22
0.2
33
120
33
22
0.3
47
150
22
10
22
0.4
100
10
0.1
100
10
As for all switching power supplies, the layout is an important step in the design, especially at high peak currents
and high switching frequencies. If the layout is not carefully done, the regulator could show stability problems as
well as EMI problems.
Therefore, use wide and short traces for the main current path as indicated in bold in Figure 24. The input
capacitor, output capacitor, and the inductor should be placed as close as possible to the IC. Use a common
ground node as shown in Figure 24 to minimize the effects of ground noise. The compensation circuit and the
feedback divider should be placed as close as possible to the IC. To layout the control ground, it is
recommended to use short traces as well, separated from the power ground traces. Connect both grounds close
to the ground pin of the IC as indicated in the layout diagram in Figure 24. This avoids ground shift problems,
which can occur due to superimposition of power ground current and control ground current.
Figure 24. Layout Diagram
18
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS61011DGSRG4 | 功能描述:开关变换器、稳压器与控制器 Lo-In Voltage Sync Boost 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 |
| TPS61012 | 制造商:TI 制造商全称:Texas Instruments 功能描述:HIGH-EFFICIENCY, 1-CELL AND 2-CELL BOOST CONVERTERS |
| TPS61012DGS | 功能描述:直流/直流开关调节器 Lo-In Voltage Sync Boost Converter 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 |
| TPS61012DGSG4 | 功能描述:直流/直流开关调节器 Lo-In Voltage Sync Boost Converter 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 |
| TPS61012DGSR | 功能描述:直流/直流开关调节器 Lo-In Voltage Sync Boost Converter 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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