Hello there, I am currently working on an application using the TPS65073 to power an OMAP3530. The application will use a battery that will be charged via USB only. There is no power on/off button, so the device would be required to power up with USB input or by the battery without USB input. However, I would like to clarify operation of the device in two situations, in particular the setting of PB_IN.
The datasheet states that in this type of application when powered from BAT, PB_IN would need to be tied low to enable power up of the converters when POWER_ON is released. For this, I was planning on connecting PB_IN directly to 0V. However, it also states that if the device is powered from USB (and not BAT), PB_IN must not be tied low to start up the converters.
- If the battery is discharged and power is input at USB, will the device power up if PB_IN is held low ?
- What set-up would be required to allow the converters to operate from USB when input and BAT otherwise, considering there is no control over PB_IN?
Many Thanks for your input.