Handshake controllers for charging protocols related to multiport chargers and methods thereof

A handshake controller for one or more charging protocols, the handshake controller comprising:

• a port detection unit connected to a plurality of USB ports and configured to generate a detection signal;
• a port selection unit configured to receive the detection signal and connected to the plurality of USB ports;
• an interface unit connected to the port selection unit;
• and
• a digital handshake unit connected to the interface unit;
• wherein the port detection unit is further configured to:
• determine whether a single USB port of the plurality of USB ports is connected to a load device;
• and
• if the single USB port of the plurality of USB ports is connected to the load device and no other USB port of the plurality of USB ports is connected to any load device, generate the detection signal identifying the single USB port that is connected to the load device;
• wherein the port selection unit is further configured to, if the detection signal identifies the single USB port that is connected to the load device, connect the single USB port to the interface unit to establish one or more signal communications between the single USB port and the digital handshake unit through the interface unit;
• wherein the port detection unit is further configured to:
• determine whether multiple USB ports of the plurality of USB ports are connected to multiple load devices respectively;
• and
• if the multiple USB ports of the plurality of USB ports are connected to the multiple load devices respectively, generate the detection signal identifying the multiple USB ports connected to the multiple load devices respectively.