2 Design Size

As consumers expect electronics to continue reducing in size and cost, power management is an area of opportunity for designers to reduce board space. Using a single PMIC, in place of many external components, can help reduce board space as well as make schematic design and layout simpler.

TPS65219 is a high power-density PMIC which integrates 3 bucks and 4 LDOs in a small 5mm x 5mm or 4mm x 4mm package. The TPS65219 PMIC is able to provide up to 60% power design size savings compared to the discrete design for powering AM62. The six discrete power ICs used in the SK-AM62B EVM can be replaced by a single TPS65219 chip in the SK-AM62B-P1 EVM. TPS65219 further shrinks the overall BOM size when considering the passive components in each design. The high 2.3Mhz switching frequency of TPS65219 allows fewer and smaller size inductors and output capacitors. Figure 2-1 shows the PCB layout of the TPS65219 PMIC vs discrete power design for AM62.

Table 2-1 provides a comparison of PMIC vs discrete design size and component count based on varying AM62x use cases of Vdd_core operation. TPS65219 PMIC leverages integration to simplify the total BOM reducing the total design size of parts to 37.98 mm2 for the 4mm x 4mm and 46.98 mm2 for the 5mm x 5mm package. In addition, a PMIC design decreases the number of total BOM components from 51 to 27.