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TUSB4020BI-Q1: TUSB4020BIPHPRQ1 driver mode supports

Red Yen
Expert 4360 points
Part Number: TUSB4020BI-Q1

Hi Support team 

The specifications of the TUSB4020BIPHPRQ1 are mentioned to support the Divider Mode. Can all of them be supported? For your reference to the table below, you can judge whether the pin can provide the following specifications.

Output Voltage

Apple 1A

Apple 2A

Apple 2.4A

Samsung

D+

2.0V

2.7V

2.7V

1.2V

D-

2.7V

2.0V

2.7V

1.2V

TUSB4020BIPHPRQ1 can support two downstream ports. When two external devices are connected, can the data transmission be transmitted at the same time, or under what conditions should the port be used for data transmission?

Since the TUSB4020BIPHPRQ1 requires two supply voltages of supply power, our current design is expected to provide 3.3V and 1.2V from our Buck output (5V), so do we need to consider the issue of Hub IC startup timing?

  • 0
    TI__Guru 64326 points
    Hi,

    Please see Table 1. TUSB4020BI-Q1 Battery Charging Modes in the TUSB4202BI-Q1 datasheet for supported charging modes. When both ports are configured as CDP then data can be sent at the same time with non-Apple/Samsung charging. Please see 7.7 Power-Up Timing Requirements table for more details on power up sequence. GRST is the key signal in this case and should not be pulled high until VDD and VDD33 are stable. A capacitor can be used for a passive reset, if desired.