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TPS2546: how to achieve Power Wake in notebook with only one power supply for TPS2546?

Part Number: TPS2546
Other Parts Discussed in Thread: TPS2544

Customer is using TPS2546 in their note baok product. They only have one power supply source for TPS2546, so they will not switch between DCDC and LDO. They are asking how to achieve lower power consumption to stop the controller to continually detect the load and try to switch the power supply with S5 and DCP mode. Could you please help address their question? Thank you.