11.1.1 DC-DC Boost Layout Recommendation
Some key guidelines are listed here to be followed for the layout of the DC-DC boost in the TCA5013:
- The inductor must be placed close to the LX pin such that the trace resistance between the LX pin and the inductor terminal is as small as possible.
- The 10 µF input capacitor on VDD shall be placed close to the inductor terminal and the two shall be connected by a copper pour to minimize resistance as much as possible.
- The other terminal of the 10 µF capacitor should be connected to GNDP plane by multiple vias to provide a low resistance path to ground.
- The 100 nF capacitor should be placed as close to VDD pin as possible.
- The anode of the schottky diode shall be placed as close as possible to the inductor and shall be connected to it by a copper pour to minimize resistance as much as possible.
- The 10 µF output capacitor on VUP should have a very low resistive connection to VUP and GNDP.