IP5328P

V1.2

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Copyright © 2015, Injoinic Corp.

If the power bank is to charge for the phone, when IP5328P enter discharge mode, it will detect the fast

charge type and request on DP, DM, which support fast charge for devices of QC2.0/QC3.0, FCP, AFC, SFCP, MTK,

and Apple 2.4A mode, Samsung 2.0A mode and BC1.2 1.0A mode.

For Apple 2.4A mode: DP=DM=2.7V

For Samsung 2.0A mode: DP=DM=1.2V

For BC1.2 1.0A mode: DP short to DM

Under BC1.2 mode, when the DP voltage is detected in the range of 2V~0.325V for 1.25s, fast charge will be

initially determined, then the short status between DP and DM will be disconnected, and DM pull-down 20kOhm

to GND at the same time. After which, if in the following 2ms the DP voltage is in range of 2V~0.325V and DM

lower than 0.325V, fast charge handshake is accomplished successfully. Then QC2.0/QC3.0 device can request for

desired voltage according to the QC standards. Any time DP lower than 0.325V will force to exit the fast charge

mode, the ouput voltage will fall back to default 5V.

QC2.0/QC3.0 output voltage request rule:

DP

DM

Result

0.6V

GND

5V

3.3V

0.6V

9V

0.6V

0.6V

12V

0.6V

3.3V

Continuous Mode

3.3V

3.3V

sustain

Continuous mode is supported by QC3.0, voltage can be adjusted by 0.2V/step according to QC3.0 request

under the continues mode.

Charge and Discharge Path Management

Standby:

If VIN or VBUS is attached to charge will start the charging process directly.

If USB C UFP device is attached on VBUS or sink device is attached on VOUT port, will start discharge function

automatically.

If key is pressed, whether or not load is on VOUT1 port, VOUT1 port output will be force to open; but the

VOUT2 and USB C port will open only when load is detected on the according port, or the output on these port

will be closed. So VOUT1 must be retained if only one VOUT port is needed, if VOUT2 or VBUS is not needed,

MOSFET can be eliminated, but the 10uF capacitor should be retained.

Discharge:

If key not pressed, only when sink device attached will the output port open, non-attached output port will

not open. If the opened output port current is less than 180mA @ 10mOhm, it will wait for a period of time before

close the port automatically. The output current is detected by the voltage drop between VSN to output, 180mA

current is equivalent to 1.8mV on 10mOhm, when the resistance (including MOSFET internal resistance) between

VSN and ouput is larger than 10mOhm, the current threshold will be decreased proportionally.

When only VOUT1 port opened, single short press on key do not take any effect; when VOUT2 or USB C is

opened and in non-fast charge mode, single short press on key will force to open VOUT1 port; when VOUT2 or

USB C is opened and in fast charge mode, the first single short press on key will force to close the fast charge on

VOUT2 or USB C port, the second short press on key will force to open VOUT1 port, the time interval between the

first and second short press should be longer than 1 second, otherwise will force to shut down the system.