Do not connect AC, BAT and/or USB together.
Pins AC and USB are inputs; AC is for an AC adapter and USB is for power from a USB port. The negative connections of all input supplies must be connected to ground.
Pin BAT acts as both an input and and…
You connect the resistor divider between the output of the inductor, the VDCDC1 pin and ground just as you would with most adjustable switch mode buck converters.
If you set DEFDCDC3_HIGH[7]=1, the register DEFDCDC3_LOW is ignored.
I'm glad to know that you already read the application note. I'm sorry that it didn't provide the information you needed. I appologize for prematurely marking the thread as "answered". It is very rare that the person asking the original…
I have seen similar behavior before, you have to force VREF on by setting bit 4 of ADCONFIG to 1 when using the touchscreen and powering with BAT only on the TPS6507x.
Here is the previous case: http://e2e.ti.com/support/power_management/pmu/f/200/t…
You must design so that your input voltage always stays above your output voltages + Rdson drop for power path + Rdson drop for each supply. Also note the minimum input voltage from the Recommended Operating Conditions table starting on page 2 of the…
Quentin,
After reviewing you schematic, I have determined the issue to be in your selection of the inductor.
Based on the procedure on pages
64 and 65 of the datasheet, I have calculated that the inductor needs to be rated for a saturation current…
Other Parts Discussed in Thread: TPS65023 , TPS650732 Question :
A customers is looking for software driver fro the TPS6507x family
They are using a Battery module in their design and want to use the Battery Management feature of this PMIC. Apparently there…
Once the PMU has started up, pulling /PB_IN low will not shut down the DCDC converters.
You need to pull POWER_ON low, to disable the converters.
The only way you can use the /PB_IN to shutdown the PMU is, detect press on pushbutton with PB_OUT on…
If the TPS65073 touch screen controller is not used, connect
AD_IN1 (TSX1) to ground
AD_IN2 (TSX2) to ground
AD_IN3 (TSY1) to ground
AD_IN4 (TSY2) to ground
Bypass and INT_LDO still need their recommended capacitor connected to maintain stability…
Hello Anisimov,
The slow increase of the SYS voltage in the range 0V < VSYS < 1.8V is the expected behavior of the device.
There is a soft start function inplemented on the SYS output.
In case the device is only powered from VBAT :
The device…