6

Functional description

6.1

Overview

The TCPP02-M18 is a cost effective solution to protect microcontrollers featuring built-in USB-C power delivery

(UCPD) controller or other low voltage power delivery controller.

Please refer to TA0357 for an overview of USB Type-C™ and power delivery technologies.

Please refer to AN5225 for more informations related to USB Type-C™ power delivery using STM32xx Series

MCUs and STM32xxx series MPUs.

6.2

Power modes

The TCPP02-M18 embeds three distinct power modes controlled by the UCPD controller via the I2C bus.

Figure 6. Power modes process

Hibernate:

• No power source

Low power:

• PD communication impracticable

Start-up

I2C

command

Unattached State

I2C

command

Attached State

No DC current on ENABLE

No DC current on VCC_VCONN

Low DC current on ENABLE

No DC current on VCC_VCONN

Normal DC current on ENABLE

Normal DC current on VCC_VCONN

Normal:

• Full performances

TCPP02-M18

Functional description

DS13787 - Rev 4

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