IP5328P

V1.2

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Copyright © 2015, Injoinic Corp.

Any one of the VOUT1, VOUT2 or USB C port support all the fast charge standards separately, but due to the

single inductor design, only one output are support, only under single port opened situation fast charge is allowed.

Two or more output port open at the same time, fast charge will be disabled automatically.

According to ‘Typical Application Diagram’, when one port is already in fast charge mode, if sink device is

attached on another port (key press action is equal to VOUT1 load attached), all the output port together with the

fast charge mode will be disabled firstly, then open the ports with sink device attached, after which all the ports

only support Apple, Samsung and BC1.2 mode. If the sink device decreased from multiple to one and keep this

situation for 16s, all the output ports will be closed firstly (pay special attention to PCB layout routing for this case,

otherwise will lead to failure on restore of fast charge function, please refer to ‘PCB Layout’), and then the high

voltage fast charge function are enabled, then the output port of the only one sink device attached will be opened,

such that will re-activate the sink device to send fast charge request . when only one port is opened, if the total

power is lower than 300mW for about 32s, the output port and discharge will be closed and the system enters low

standby mode.

Charging：

When power are applied on either VIN or VBUS port can activate the IP5328P enter charging process, if both

ports are applied at the same time, USB C port power will be used for charging in priority.

if additional input fast charge IC are needed, 2 back-to-back PMOS should be applied on the added input port

for power partition control, in case current flow from high voltage port to low voltage port when two ports

attached at the same time.

In single port charging mode, the fast charge mode can be distinguished automatically, appropriate voltage

and current will be auto matched.

Standard solution do not support charging the sink device and battery at the same time, during charging

mode, even if sink devices are attached on the output port, the output port will not be opened. But if battery is

fully charged and the charging power supply is not detached, IP5328P will open the output port for the sink device

on the premise of 5V voltage on the charging port.

Charging and discharging at the Same Time (Customized Solution)：

In this customized solution, RSET function is not available; the RSET is redefined as an indicator of this

customized mode. If IP5328P are in charging the battery and sink device at the same time, RSET will output high

voltage, otherwise RSET will output low voltage.

When the charging power supply and sink device are attached at the same time, IP5328P will charge the

battery and sink device at the same time. Under this mode, IP5328P will disable the input fast charge function ( if

the additional fast charge IC is applied , RSET pin is used to control the enable pin of the additional fast charge IC),

when VSYS is only 5V, the discharge path will be enabled for the sink device. If the VSYS voltage is higher than 5.8V,

for safety consideration, the discharge path will be disabled. To make insurance of the normal charging and high

priority of charging the sink device, IP5328P will increase the charging under voltage threshold to 4.9V.

During the process of charging and discharging at the same time, if the input charging power supply is

unplugged, IP5328P will disable the input charging function and restart the discharge function for the sink device.

For safety consideration and to re-activate the sink device to send fast charge request, the voltage will fall to 0

during this conversion process.

During the process of charging and discharging at the same time, if the discharging sink device is unplugged or the

sink device stop to sink current for 16s, the discharge path will be closed automatically. When all the discharge

paths are disabled and return to single port charge state, the under voltage threshold will be decreased, fast

charge for the power bank will be auto re-activated.