IP2721

V1.02

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Copyright © 2017, Injoinic Corp.

10.Function Description

USB TYPEC/PD protocol

IP2721 is an integrated USB TYPEC PD protocol IC for USB input port, support USB TYPEC/PD2.0/PD3.0

protocol. USB TYPEC device plug-in and plug-out is auto-detected based on CC1/CC2 pins. IP2721 integrated PD

protocol analyzer to get the voltage capabilities and request the matched voltage.

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Port mode: sink (device)

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Auto-detect USB TYPEC device plug-in and plug-out

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Integrate hardware bi-phase Mark Coding (BMC) over CC

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Integrate physical layer

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Integrate PD protocol state machine

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Support PD hardreset

SEL pin

SEL pin is used to configure the maximum voltage that IP2721 will request, when SEL is pulled to high voltage

15V; when SEL pull down to GND, IP2721 only request 5V voltage.

If the maximum voltage SRC port supported is lower than IP2721 capable of, IP2721 will request the

maximum voltage supported by the SRC port. If the maximum voltage SRC port supported is higher than IP2721

capable of , IP2721 will request its maximum voltage and supported by the SRC port as well. That is to say, IP2721

will request the maximum voltage supported by both IP2721 and SRC port.

The customized models of IP2721_MAX is configured switching the maximum request voltage among 12V, 9V

power up, it should be connected well before IP2721 power up.

SEL

IP2721 Voltage

IP2721_MAX12 Voltage

20V

12V

Floating

15V

9V

GND

5V

5V

Power path control

IP2721 support external NMOS for power path control, controlling the Gate of external NMOS by VBUSG pin.

The NMOS will be turned on when CC connection is established, and turned off when CC disconnected.

*Power NMOS of Vds withstand voltage above 30V is recommended.