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TPS650732
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  • Forum Post: TPS65073 DVS slew rate

    ChristianHoefling
    Question : What is the expected maximum slew rate if DEFSLEW is set to “immediate”? Customer is trying to get the voltage scaling as quick as possible (they use DEFDCDC3 to change between 2 voltages). Customer would like to know how long they have to wait from an OMAP3 perspective before...
    on Jan 30, 2010

  • Forum Post: Re: TPS65073 DVS slew rate

    ChristianHoefling
    Answer : Setting DEFSLEW to immidiate will result in approx 10mV/us slew rate. Originally there was a GO bit that needed to be set to start voltage change. The option immidiate did not need the this GO bit to be set. This function was removed, so all slew rate option start voltage change with...
    on Jan 30, 2010

  • Forum Post: TPS6507x Power Path

    ChristianHoefling
    Question : The TPS6507x datasheet does not explain the operation of the Power Path in detail. Can you please explain how the Power Path is regulating the Charge Current voltage under der following conditions below? Case 1: USB (or AC) input present and Battery is not Case 2: USB (or AC) input...
    on Feb 26, 2010

  • Forum Post: TPS65070 wLED boost connections if not used

    Vladimir Svinolobov
    Greetings. A little question about using TPS65070 wLED boost block. I don`t need it in my project, so i want to turn it off. So the question is how to do it properly. Can i just left it`s legs not connected or i must connect them to ground? Best regards, Vladimir
    on Mar 8, 2010

  • Forum Post: Re: TPS65070 wLED boost connections if not used

    Michael Day
    If the TPS65073 wLED (white light led driver) boost is not used, connect ISET1 with a 100kohm resistor to ground ISET2 with a 100kohm resistor to ground ISINK1 to ground ISINK2 to ground FB to ground L4 to ground
    on Mar 8, 2010

  • Forum Post: Re: TPS650732 PGOOD delays

    Michael Day
    Information written into the TPS650732 internal registers is erased when power is removed from VCC. This information must be rewritten at power up. The IC does not have non-volatile registers available for the customer.
    on Jul 23, 2010

  • Forum Post: TPS650732 RESET

    Dave Pulvermacher
    To be able to initiate a system-wide (board level) Reset (shutting down all the voltage besides Vsys and AC), is it best to that with a pushbutton switch on /PB_IN, PB_OUT, or POWER_ON? I currently have POWER_ON pulled high to Vsys so I don’t believe a pushbutton on /PB_IN will work. BUT, if...
    on Aug 25, 2010

  • Forum Post: Re: TPS650732 RESET

    ChristianHoefling
    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 the processor side. Based on an interrupt...
    on Aug 30, 2010

  • Forum Post: Software Drivers for TPS6507x

    ChristianHoefling
    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 is no existing driver to take care of this feature. Could you please help in getting the...
    on Sep 1, 2010

  • Forum Post: Re: Software Drivers for TPS6507x

    ChristianHoefling
    Answer : Please note that we do not provide any drivers for this IC. The customer is intended to do this on his own. Anyhow, the customer should be able to use this IC with minimal software development.
    on Sep 1, 2010

  • Forum Post: TPS650732 CHARGER

    Ozawa
    My customer has two questions on the charger of the TPS650732. ① I want to know about the charger function of TPS650732. Is it possible to charge up when CPU (AM3505) is not working? Furthermore, is it possible to tell charge status from the outside without using I2C? For example, my customer...
    on Oct 15, 2010

  • Forum Post: Re: TPS650732 CHARGER

    ChristianHoefling
    The charger in the TPS650732 is enabled by default. This means that the charger will start a new charge cycle, once a valid supply voltage is connected on AC or USB and a battery is present. The charger will start charge cycle without any I2C communication required. If you want to use any other...
    on Oct 17, 2010

  • Wiki Page: TPS6507x input source for SYS voltage

    Michael Day
    Q: TPS6507x input source for SYS voltage by 479615 question regarding the TPS650732 datasheet. Would you please answer question as follows? 1. Datasheet p34(Figure 33): When the TPS650732 status changes from "Power OFF/SYS=0" to "Power OFF/SYS=1" and /PB_IN goes 1 to 0, where...
    on Nov 22, 2010

  • Forum Post: Re: Reverse Battery Protection for the TPS65070?

    Michael Day
    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 question marks the thread as answered after...
    on Dec 3, 2010

  • Forum Post: Re: Powering up TPS65070 with huge capacitors on SYS

    ChristianHoefling
    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 is turned on by pulling /PB_IN low. SYS...
    on Dec 23, 2010

  • Forum Post: Re: TPS65070 CON_CTRL1 Parameter Setting

    Daniel Acevedo
    What are you trying to achieve by programming through I2C? If start-up sequencing, I recommend using one of the TPS6507xx variants which provide preprogrammed internal sequencing to power up the processor. Once the processor is powered up, it can issue I2C commands to the TPS6507xx.
    on Mar 3, 2011

  • Forum Post: Re: TPS65070 - power dissipation limits

    Daniel Acevedo
    Boris, Your question is less related to the TPS65070 IC and more related to your system's thermal performance for which you should visit ti.com/thermal to understand. The Dissipation Ratings table in the TPS65070 datasheet is power dissipated (Pd=Pin-Pout) and not just output power; this table...
    on Apr 11, 2011

  • Forum Post: Re: Software Drivers for TPS6507x

    Campion Kang
    Sorry, I think it is not clear, just understand that it needs to modify, but where and modify what? Please point out. What's the diff with TPS65023? Since TPS650732 this chip may be use for touch, LED backlight driver, it is important. Thanks.
    on Apr 27, 2011

  • Forum Post: Re: tps65070 capacitance on touch lines

    Daniel Acevedo
    The 100pF spec. is the maximum total capacitance for each pin (T SX1,TSX2,TSY1 and TSY2) to ground, internal to the SAR ADC.
    on Jul 6, 2011

  • Wiki Page: TPS65070 capacitance on touch lines

    Daniel Acevedo
    Q: tps65070 capacitance on touch lines by 1820788 The TPS65070 datasheet states on page 10 that total capacitance at pins TSX1,TSX2,TSY1,TSY2 to GND is 100pF. If this the characteristic capacitance on the device? Or is 100pF the max capacitance that can be placed on the TSX1,TSX2,TSY1 and TSY2 lines...
    on Jul 18, 2011

  • Forum Post: Re: TPS6507x Power Path

    Dave Pulvermacher
    Christian, I realize that this is an old post, but... What about Case X: AC is present and battery is not fully charged. Does the charger automatically switch on and charge the battery with I(chrg)? [I(chrg)=1000/R]. I assume this is the case but I don't see that happening. If the battery...
    on Jul 19, 2011

  • Wiki Page: TPS650731 Not Starting Up

    Daniel Acevedo
    Q: TPS650731 Power On Conditions by 1030022 I have a customer using this device who is having trouble with the power on sequence. They have designed their board according to Figure 33 of the datasheet (State Machine), which according to my interpretation should power up the device when AC or USB is...
    on Jul 19, 2011

  • Forum Post: Re: TPS6507x Power Path

    Dave Pulvermacher
    Jason, We just tried that without success. But I didn't expect anything to happen since we are powering the unit thru AC. I've been noticing that as the battery voltage slowly goes up, the current slowly goes down. I thought it was supposed to stay at I(CHG) = 1.3A until the battery reached...
    on Aug 5, 2011

  • Wiki Page: TPS65070 Low Charge Current

    Daniel Acevedo
    Q: TPS65070 Low Charge Current by 1129650 I have the battery supplying 1.3A to the TPS65070. When I connect 5V to the AC pin I expect the battery to stop supplying the current and start charging at a rate of Kist/Riset. However, I only see about 700 mA instead of the expected 1.2 A (for Kiset ...
    on Aug 8, 2011

  • Wiki Page: TPS65070 Batt charge current

    Daniel Acevedo
    Re: TPS65073x Batt charge current by 1129650 [quote user="ZEN"] Hello, Please teach an expression to convert a register level of the A/D conversion result that it retrieved into a real charge electric current level. [D.A.] The full scale charge current will depend on the value of...
    on Aug 17, 2011
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