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  • Forum Post: Re: Troubleshooting Steps for TPS6070

    Daniel Acevedo
    In the case where the supply is to power up when 5V is applied to the AC pin, the pin named PB_IN (which has an internal pull-up to AVDD6) should be left open and pin POWER-ON needs to be pulled high. If the TPS65070 is powered from the BAT pin, PB_IN needs to be tied low to start the converters.
    on Jan 19, 2011

  • Forum Post: TPS65070 How to Enable when Power is Connected to AC pin

    Charles Gervasi
    I have a TPS65070 that is failing to come up on a new board. I have series resistor from all supplies just downstream from the the inductors and capacitors, allowing me to run the supply completely unloaded. I don't know how well it should work completely unloaded, but I am getting zero volts...
    on Jan 15, 2011

  • Forum Post: Re: tps65070 touch pressure with battery

    Daniel Acevedo
    MIke, If I understand correctly, you are reading the touch screen through the TPS65070 with your OMAP and have looked at the pins TSX# and TSY# with a scope. Is it possible you have changed the contents of ADCONFIG [3:0] to 4b1111 instead of 4b1110? Along with verifying the contents of ADCONFIG...
    on Apr 22, 2011

  • Forum Post: TPS65070 AC pin misleading name

    Anonymous Anonymous
    Hi, I would like to ask a question on TPS65070. Pin [AC, 10] is connected to DC input, but why it is called AC? I have found it very misleading since it suggests " Alternating Current " and is the standard acronym for this term. Zheng
    on Oct 27, 2011

  • Forum Post: Re: TPS65070 AC pin misleading name

    Daniel Acevedo
    In this case AC is short for AC Adapter.
    on Oct 27, 2011

  • Forum Post: Re: TPS6507x: How can Battery and Adapter be differentiated from each other?

    Daniel Acevedo
    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 output; input when supplying power and output when...
    on Oct 27, 2011

  • Forum Post: Re: TPS65070 Touchscreen

    Daniel Acevedo
    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/106727.aspx
    on Nov 9, 2011

  • Forum Post: Re: TPS65072 VBATT SWITCH IS NOT ON WHEN CONNECTINFG BATTERY ALONE

    Daniel Acevedo
    These are common questions which we have covered in the TPS65072 datasheet. Page 25 describes the Power-Path Management and SYS output. "When TPS6507x is turned off and there is no voltage at AC or USB, the SYS output is disconnected internally from the battery. When TPS6507x is turned on by...
    on Apr 3, 2012

  • Forum Post: RE: TPS65070 AC enabled

    Boris Ruvinsky
    Hi Daniel. Thank you very much for your respond and explanation. Can you please answer also on my othe questions abour CON_CTRL1 register? 6. In DS page53 - CON_CTRL1 register bit[4:2] for DCDC1:DCDC3. It is not exactly clear - now these enable bits function. 7. DCDC2 and DCDC3 are automatically...
    on Jun 1, 2012

  • Forum Post: TPS65070 AC enabled

    Boris Ruvinsky
    Dear E2E: Thank you for your help. I use TPS65070 to power OMAP-L138. Everything looks good and works OK. I use also embedded ADC converter for the different voltages measurement and this also works OK. I have the question about possible accidental power shutdown by the SW through I2C0 interface...
    on May 31, 2012

  • Forum Post: TPS65070 current differs on AC versus USB pin

    Mike Looijmans
    We are powering an OMAP-L138 via the TPS65070 (on the Logic PD SOM). There's a Li-Ion battery connected to the BAT, which is monitored by a DS2788 fuel gauge. When I power the system via the USB pin, using a source capable of supplying at least 1500mA, and set the current limit for the USB to...
    on Oct 30, 2012

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