ZHCSJU1E May 2008 – May 2019 TPS61087
PRODUCTION DATA.
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 修訂歷史記錄
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Detailed Description
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文檔支持
- 12機(jī)械、封裝和可訂購信息
封裝選項
機(jī)械數(shù)據(jù) (封裝 | 引腳)
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
訂購信息
8.2.2.6 Output Capacitor Selection
For best output voltage filtering a low ESR output capacitor like ceramic capcaitor is recommended. Four 10-μF ceramic output capacitors (or two-22 μF) work for most of the applications. Higher capacitor values can be used to improve the load transient response. See Table 6 for the selection of the output capacitor.
Table 6. Rectifier Input and Output Capacitor Selection
| CAPACITOR/SIZE | VOLTAGE RATING | SUPPLIER | COMPONENT CODE | |
|---|---|---|---|---|
| CIN | 22 μF/1206 | 16 V | Taiyo Yuden | EMK316 BJ 226ML |
| IN bypass | 1 μF/0603 | 16 V | Taiyo Yuden | EMK107 BJ 105KA |
| COUT | 10 μF/1206 | 25 V | Taiyo Yuden | TMK316 BJ 106KL |
To calculate the output voltage ripple, the following equation can be used:
Equation 10. 
with
| ΔVC | Output voltage ripple dependent on output capacitance,output current and switching frequency |
| VS | Output voltage |
| VIN | Minimum input voltage of boost converter |
| fS | Converter switching frequency (typically 1.2 MHz or 650 kHz) |
| Iout | Output capacitance |
| ΔVC_ESR | Output voltage ripple due to output capacitors ESR (equivalent series resistance) |
| ISWPEAK | Inductor peak switch current in the application |
| RC_ESR | Output capacitors equivalent series resistance (ESR) |
ΔVC_ESR can be neglected in many cases since ceramic capacitors provide low ESR.