Other Parts Discussed in Thread: AM2432,
Tool/software:
Dear Team,
My customer is designing the application circuit of the TPS6521907 for powering the AM2432. They use default value of EEPROM of the TPS6521907.
They have a question about the EN/PB/VSENSE pin processing.
The TPS65219 datasheet, page 31, "Figure 7-2. Power-up sequencing (example)" shows the power-up sequence between the VSYS and the ON-Request, it is "tEEPROM_LOAD = ~2.3ms". It can be read by entering the ON-Request ~2.3ms after the EEPROM is loaded.
On the other hand, the (EN/PB/VSENSE pin) has three types of functions. And the On-Request appears to be valid only in PB mode.
If the application circuit is configured to pull-up the (EN/PB/VSENSE pin) at the VSYS potential, VSYS and (EN/PB/VSENSE terminals) start up at the same time.
They think there is no problem with this usage, but what is it?
Best Regards,
Koshi Ninomiya