ZHCSB86E November 2011 – October 2021 TPS62150 , TPS62150A , TPS62151 , TPS62152 , TPS62153
PRODUCTION DATA
The external components must fulfill the needs of the application, but also the stability criteria for the control loop of the device. The TPS6215x device is optimized to work within a range of external components. Consider the inductance and capacitance of the LC output filters in conjunction, creating the double pole responsible for the corner frequency of the converter (see Section 9.2.2.4). Table 9-2 can be used to simplify the output filter component selection. Checked cells represent combinations that are proven for stability by simulation and lab test. Further combinations should be checked for each individual application. See the Optimizing the TPS62130/40/50/60 Output Filter Application Report for details.
| 4.7 μF(1) | 10 μF | 22 μF | 47 μF | 100 μF | 200 μF | 400 μF | |
|---|---|---|---|---|---|---|---|
| 0.47 μH | |||||||
| 1 μH | √ | √ | √ | √ | |||
| 2.2 μH | √ | √(2) | √ | √ | √ | ||
| 3.3 μH | √ | √ | √ | √ | |||
| 4.7 μH |
The TPS6215x device can operate with an inductor as low as 1 μH or 2.2 μH. FSW should be set low in this case. However, for applications running with the low-frequency setting (FSW = high) or with low input voltages, 3.3 μH is recommended.