shows the power supply block, which has all of the onboard supplies generated and the comparator circuit for barrel-jack detection. There are
two variable supplies that generate 5, 9, 15, and 20 V. There are three DC/DC converters that generate 1.2, 3.3, and 5 V. The minimum voltage for
SYS_PWR is 5 V; however, this also decreases VBUS maximum power capabilities. When using a lower voltage, the comparator circuit may have to be
adjusted to trip at a lower voltage for proper barrel jack detection.
Figure 9-4. TPS65988EVM Power Supply Block
TPS65988EVM Schematic
SLVUB62B – JUNE 2017 – REVISED NOVEMBER 2020
TPS65988 Evaluation Module
41
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