SLVSB76B August 2012 – August 2019 TPS63036
The design guideline provides a component selection to operate the device within the recommended operating conditions.
|L1||1.5 μH, 3 mm x 3 mm x 1.5 mm||Coilcraft, LPS3015-152MLC|
|C1||10 μF 6.3V, 0603, X7R ceramic||GRM188R60J106KME84D, Murata|
|C2||3 × 10 μF 6.3V, 0603, X7R ceramic||GRM188R60J106KME84D, Murata|
|R1, R2||Depending on the output voltage at TPS63036|
The TPS63036 buck-boost converter has internal loop compensation. Therefore, the external L-C filter has to be selected to work with the internal compensation. As a general rule of thumb, the product L × C should not move over a wide range when selecting a different output filter. However, when selecting the output filter a low limit for the inductor value exists to avoid sub-harmonic oscillation which could be caused by a far too fast ramp up of the amplified inductor current. For the TPS63036 the minimum inductor value should be kept at 1 uH. To simplify this process Table 1 outlines possible inductor and capacitor value combinations.
|INDUCTOR VALUE [µH](1)||OUTPUT CAPACITOR VALUE [µF](2)|