Main board and display drive unit used in high performance signal processing device (such as FPGA and DSP) need to be able to produce different kernel voltage and the I/O voltage more power. Power supply power on and turn off sequence on the device operation and long-term reliability is very important. Power sort can use three methods: sequence sorting, scale (ratio - metric) sorting and at the same time sequence. The correct sorting method depends on the requirements of the processor. In this case the sequence sorting method, in this method a power output began to booster and stability to the final voltage, then the second power supply output in a certain time delay later began to booster.power load chart
Figure 2 is a description sequence sorting method example. To realize this sort plan a good method is equipped with power supply good instructions and make can function pin devices, the first power supply good output connected to need to sort the second power that can pin, ensure the signal has the correct polarity. Contains the above characteristics of the most of the DC/DC converter are to be so used, they have the same polarity, and the signal can be directly fit. Additional, still can be in this way control additional power.power supply load
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