ZHCSFB9B June 2016 – March 2019 TPS63070
PRODUCTION DATA.
The TPS6307x series of buck-boost converter has internal loop compensation. Therefore, the external L-C filter has to be selected according to the internal compensation. It's important to consider that the effective inductance, due to inductor tolerance and current derating can vary between 20% and -30%. The same for the capacitance of the output filter: the effective capacitance can vary between +20% and -80% of the specified datasheet value, due to capacitor tolerance and bias voltage. For this reason, Output Filter Selection shows the nominal capacitance and inductance value allowed. The effective capacitance of the adjustable version TPS63070 on the output (in µF) needs to be at least 10 times higher than the effective inductance (in µH) to ensure a good transient response and stable operation.
| INDUCTOR VALUE [µH](1) | OUTPUT CAPACITOR VALUE [µF](2) | |||
|---|---|---|---|---|
| 22 | 47 | 68 | 100 | |
| 1.0 | √ | √ | √ | |
| 1.5 | √(3) | √ | √ | |
| 2.2 | √ | √ | ||