IP5389

V1.23

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PD2.0

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PD3.0

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PPS

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Table 12

The fast charging protocol supported by each port of IP5389

supported：√

not supported：-

12.7

Charging and Discharging Path Management

Standby:

If VIN or VBUS is connected to a power supply, charging can be started directly.

If a USB C UFP device is inserted into VBUS or an electrical device is inserted into VOUT, the

discharging function can be automatically turned on.

IP5389 will turn on when the key is pressed or there is a load on VOUT1, VOUT2, or USB C, otherwise

it will keep standby state.

Discharging:

When the key is not pressed, only the path of the output port that is connected to electrical device will

be opened, and the path of the output port that is not connected to electrical device will be closed.

Any port of VOUT1, VOUT2, USB C can support output fast charging protocol, but because of a single

inductor solution, it can only support one voltage output. In other words, It only supports fast charging

output when only one output port is turned on. When two or three output ports are used at the same time,

the fast charging function will be automatically turned off.

According to the connection shown in the "Simplified application schematic", when any output port

has entered fast charging output mode, if another output port is plugged in with an electrical device, it will

first close all the output ports, turn off the high-voltage fast charge function, and then turn on the output

port where the device exists. At this time, all the output ports only support Apple and BC1.2 charging.

When in the multi-port output mode, if the output current of any output port is less than about 80mA (MOS

Rds_ON@10mohm), the port will be automatically closed after 16s. When it is detected that the number

of electrical device is reduced from multiple to one, after about 16s, all output ports will be closed first, then

the high-voltage fast charging function will be turned on, and the output port connected to the electrical

device will be turned on. In this way, the device can be reactivated to request a fast charging. When only

one output port is turned on, and total output power is less than about 350mW for about 32s, IP5389 will

close the output port, stop discharging and enter standby state.

Charging:

Any one of VIN and VBUS can be plugged into a power source to charge the battery. If they are all

connected to the power source, the first plugged-in power source will be used first for charging.

In the case of charging only, it will automatically recognize the fast charging mode of the power supply

and automatically match the appropriate charging voltage and charging current.