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| 型号： | TPS60131PWPR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 0.3 A SWITCHED CAPACITOR REGULATOR, 450 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | GREEN, PLASTIC, HTSSOP-20 |
| 文件页数： | 8/27页 |
| 文件大小： | 0K |
| 代理商： | TPS60131PWPR |
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TPS60130, TPS60131, TPS60132, TPS60133
REGULATED 5V, 300 mA HIGH EFFICIENCY CHARGE PUMP
DC/DC CONVERTERS
SLVS258A NOVEMBER 1999 REVISED DECEMBER 1999
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
capacitor selection (continued)
Table 2. Recommended Capicator Values
PART
VI
IO
Ci
(
F)
C(xF)
(
F)
Co
(
F)
VPP(TYP)
PART
VI
(V)
IO
(mA)
TANTALUM
CERAMIC
(X7R)
(
F)
CERAMIC
(X7R)
TANTALUM
CERAMIC
(X7R)
VPP(TYP)
(V)
225
10
2.2
22
4.7
90
TPS60130
225
10
2.2
22
60
TPS60130
TPS60131
3.6
33
4.7
120
TPS60131
3.6
300
10
2.2
22 and 10 in
parallel
45
TPS60132
75
4.7
10
TPS60132
TPS60133
3.6
150
4.7
2.2
1
15
22
100
TPS60133
3.6
150
4.7
1
22
90
The TPS6013x devices are charge pumps that regulate the output voltage using pulse-skip regulation mode.
The output voltage ripple is therefore dependent on the values and the ESR of the input, output and flying
capacitors. The only possibility to reduce the output voltage ripple is to choose the appropriate capacitors. The
lowest output voltage ripple can be achieved using ceramic capacitors because of their low ESR and their
frequency characteristic.
Ceramic capacitors typically have an ESR that is more than 10 times lower than tantalum capacitors and they
retain their capacitance at frequencies more than 10 times higher than tantalum. Many different tantalum
capacitors act as an inductance for frequencies higher than 200 kHz. This behavior increases the output voltage
ripple. Therefore the best choice for a minimized ripple is the ceramic capacitor. For applications that do not
need a higher performance in output voltage ripple, tantalum capacitors with a low ESR are a possibility for input
and output capacitor, but a ceramic capacitor should be connected in parallel. Be aware that the ESR of tantalum
capacitors is indirectly proportional to the physical size of the capacitor.
Table 2 is a good starting point for choosing the capacitors. If the output voltage ripple is too high for the
application, it can be improved by selecting the appropriate capacitors. The first step is to increase the
capacitance at the output. If the ripple is still too high, the second step would be to increase the capacitance
at the input.
For the TPS60130 and TPS60131, the smallest board space can be achieved using Sprague’s 595D-series
tantalum capacitors for input and output. However, high capacitance ceramic capacitors will become
competitive in package size soon.
The smallest size for the lower-current devices TPS60132 and TPS60133 can be achieved using the suggested
ceramic capacitors.
相关PDF资料 |
PDF描述 |
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| TPS60252RTER | 0.65 A SWITCHED CAPACITOR CONVERTER, 750 kHz SWITCHING FREQ-MAX, PQCC16 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS60131PWPRG4 | 功能描述:电荷泵 Reg 5V Hi-Eff Charge Pump DC/DC Converter RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| TPS60132 | 制造商:TI 制造商全称:Texas Instruments 功能描述:REGULATED 5-V, 300 mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS |
| TPS60132PWP | 功能描述:电荷泵 Reg 5V Hi-Eff Charge Pump DC/DC Converter RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| TPS60132PWPG4 | 功能描述:电荷泵 Reg 5V Hi-Eff Charge Pump DC/DC Converter RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| TPS60132PWPR | 功能描述:直流/直流开关调节器 Reg 5V Hi-Eff Charge Pump DC/DC 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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