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TPS650731
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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: TPS65073 with OMAP3530 clarifications requested

    ChristianHoefling
    Hello Bjorn, please find answer embedded below 1) If not using a battery or USB, do you still need to connect any decoupling caps to these pins, as stated in the datasheet? In case you are not using a battery or USB, you can connect both USB and BAT pins to GND. 2) Similarily, how to connect...
    on May 19, 2010

  • Forum Post: Re: TPS65070 - not using touchscreen

    Michael Day
    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 of the internal power supplies.
    on Aug 6, 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: Re: OMAP3530...and not using a TPS65690

    ChristianHoefling
    Hello Patrick, There is an application note available that details how to power the OMAP35x using the TPS65073. See link below http://focus.ti.com/analog/docs/litabsmultiplefilelist.tsp?literatureNumber=slva376&docCategoryId=5&familyId=759 If SYS_OFF mode is required TPS65073 should...
    on Sep 9, 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 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

  • 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

  • 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

  • Wiki Page: TPS6507x Unused Thermistor, TS

    Daniel Acevedo
    Q: What should I do with the TS pin if the thermistor is not used? A: If the thermistor on pin TS are not used, a 10k-Ohm resistor should be connected from pin TS to ground.
    on Sep 19, 2011

  • Wiki Page: TPS6507x Unused wLED Boost Converter

    Daniel Acevedo
    Q: what should I do with the wLED Boost Converter pins if I am not using the white LED boost? A: Please make the following connections if the wLED Boost Converter of the TPS6507x is unused. L4 - to ground ISET1 - with a 100kohm resistor to ground ISET2 - with a 100kohm resistor to ground...
    on Sep 19, 2011

  • Wiki Page: TPS6507x Unused ISET Pin

    Daniel Acevedo
    Q: What do I do with the ISET pin if it is not used? A: The ISET pin should be connected to a 100k-Ohm resistor to ground if the pin is unused.
    on Sep 19, 2011

  • Wiki Page: TPS6507x Unused /RESET Pin

    Daniel Acevedo
    Q: How should I connect the /RESET pin if it is unused? A: The /RESET pin of the TPS6507x is an open drain output and should be connected to ground if it is not used.
    on Sep 19, 2011

  • Wiki Page: TPS6507x Unused BYPASS Pin

    Daniel Acevedo
    Q: What do I do with the BYPASS pin if it is unused? A: If the BYPASS pin is not used, connect 10uF capacitor from BYPASS to GND. BYPASS voltage is used as a reference fro the ADC and the charger. Do not leave this pin floating and do not connect directly to GND
    on Sep 19, 2011

  • Wiki Page: TPS6507x Unused INT_LDO Pin

    Daniel Acevedo
    Q: What do I do with the INT_LDO pin if it is not used? A: Connect a 2.2uF capacitor from INT_LDO to GND. INT_LDO is an internal reference. Do not leave this pin floating and do not connect directly to GND.
    on Sep 19, 2011
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