Automotive electronic system and power supply method thereof

A power supply method of an automotive electronic system, comprising:

• outputting a first control signal by using a control chip;
• enabling a first switching regulator of a plurality of head end devices according to the first control signal;
• based on a first voltage, supplying power to a network switch of the plurality of head end devices by using the first switching regulator to awake the network switch;
• outputting an interface signal to an automotive network by using the network switch;
• enabling a second switching regulator of a plurality of terminal end devices according to the interface signal on the automotive network;
• and
• based on the first voltage, supplying power to an electronic application module of the plurality of terminal end devices, the electronic application module communicating with and connected to the network switch through the automotive network, by using the second switching regulator to awake the electronic application module.

A power supply method of an automotive electronic system, comprising:

• outputting a control signal according to external information by using an electronic application module of a plurality of terminal end devices;
• enabling a first switching regulator of the plurality of terminal end devices according to the control signal;
• based on a first voltage, supplying power to the electronic application module by using the first switching regulator to awake the electronic application module;
• outputting an interface signal to an automotive network by using the electronic application module;
• enabling a second switching regulator of a plurality of head end devices according to the interface signal on the automotive network;
• and
• based on the first voltage, supplying power to a network switch of the plurality of head end devices, the network switch communicating with and connected to the electronic application module through the automotive network, by using the second switching regulator to awake the network switch.

A power supply method of an automotive electronic system, comprising:

• outputting an interface signal to an automotive network, wherein the automotive network is connected to a network switch of a plurality of head end devices and an electronic application module of a plurality of terminal end devices, and the network switch and the electronic application module communicate with each other through the automotive network;
• enabling a first switching regulator of the plurality of head end devices according to at least one of a first control signal from a control chip and the interface signal on the automotive network;
• when the first switching regulator is enabled, based on a first voltage, supplying power to the network switch by using the first switching regulator to awake the network switch;
• enabling a second switching regulator of the plurality of terminal end devices according to at least one of a second control signal from the electronic application module and the interface signal on the automotive network;
• and
• when the second switching regulator is enabled, based on the first voltage, supplying power to the electronic application module by using the second switching regulator to awake the electronic application module.