IP5568

V1.31

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fast charge input request. When the vsys voltage is only 5V, turn on the discharge path to supply power to the

electrical equipment; if the vsys voltage is greater than 6.0v, for safety reasons, the discharge path will not be

turned on. In order to ensure the normal charging of electrical equipment, ip5568 will increase the charging

undervoltage loop to more than 4.9v to ensure the priority of power supply to electrical equipment.

In the process of charging and discharging, if the charging power is unplugged, ip5568 will turn off the

charging function and restart the discharging function to supply power to the electric equipment. For the sake of

safety, and in order to be able to reactivate the mobile phone to request fast charging, the voltage will drop to 0V

for a period of time during the conversion process.

In the process of charging and discharging, if the electric equipment is unplugged, or the electric equipment

is full and stops pumping for 16s, the corresponding discharge path will be automatically closed. When the

discharge paths are closed and the state returns to single charging mode, the charging undervoltage loop will be

reduced, and the fast charging will be automatically reactivated to accelerate the charging of mobile power

supply.

Wireless charging power supply:

The power supply of wireless charging TX is directly powered from VSYS node. When wireless charging TX and

wired port work at the same time, wireless charging only supports 5W, wired port output only 5V, no fast

charging.

Automatic detection of mobile phone

Auto detection on sink device/phone attachment：

IP5568 support auto detection on sink device/phone attachment/ plug in, once the attachment is detected,

the boost will be turned on charging the sink device/phone, so non-key solution are supported.

Auto detection on sink device/phone fully charged：

IP5568 measures the output current of each port through the on-chip ADC. When the output current of a

single port is less than about 80mA and lasts for about 16s, the output port will be closed. When the total current

is less than about 80mA for about 32S, it is considered that all output cell phones are full or unplugged, and the

boost output will be automatically turned off.

KEY\Key_mode selection\LED and nixie tube selection

KEY

WLED

Figure 4

KEY circuit

Key circuit is illustrated in Figure 4, which can recognize short press or long press operation.