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TPS65072
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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: TPS65072 for GSM module; max output capacitance

    Krzysztof Marcinek
    I'd like to use TPS65072 for my uC li-ion baterry design. The first DCDC will be set on 3.3V and supply uC I/O, Nand Flash and few other peripherals. The question is will it be enough to supply also GSM module. It's specs are 3.3-4.5V, 250mA avg. and 1.5A peak!. There will be two 1000uF caps...
    on Jul 20, 2010

  • Forum Post: Re: TPS65072

    Michael Day
    Common practice for an RF PA design is to make sure the power supply is capable of providing the average RF PA current. During transmission, the load current goes higher than the power supply can deliver and the power supply operates in current limit. The output voltage is allowed to droop during this...
    on Jul 21, 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: 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

  • 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

  • Wiki Page: TPS65072 Charger Temp Monitoring

    Michael Day
    Q: TPS65072 Charger Temp Monitoring by 1068546 Can you please recommend a configuration to disable the temp sense. i.e. what external resistor values to connect to TS pin such that the TS pin is approapriately biased when the BIT_SENSOR_TYPE bit is 1 or 0? A: Re: TPS65072 Charger Temp Monitoring...
    on Dec 2, 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: TPS65072 Stuck in an intermediate state

    Andrea Ramos
    We are seeing an issue with the TPS65072 that I need your help with. I’m not sure how we are getting into this state: The PMIC is ‘stuck’ with Vsys and AVDD6 enabled. Both are measured at approximately 4.0V, which is the same voltage as our battery. We try asserting PB_IN_N for...
    on Mar 14, 2011

  • Forum Post: Re: TPS65072 Stuck in an intermediate state

    Todd Vanyo
    Andrea, What is the status of the POWER_ON pin? Does it have a pull up on it? Todd
    on Mar 14, 2011

  • Forum Post: Re: TPS65072 Stuck in an intermediate state

    Todd Vanyo
    Andrea, when you say that POWER_ON is not being used does that mean it is left floating? Does this also mean the customer is never turning the device off? I believe the problem is POWER_ON is being left to float and it is somehow discharging to ground. This will make the device go back to the off...
    on Mar 18, 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

  • Wiki Page: TPS65070 DEEP SLEEP

    Daniel Acevedo
    Q: TPS65070 DEEP SLEEP by 659599 Hello Team, May I confirm a thing of TPS65070 DEEP SLEEP mode? My understanding is the mode is applied to only Sirf Prima processor control. Then using TPS65070 for OMAPL138 the DEEP SLEEP mode will not be used... Is my understanding correct? Any comment will...
    on Apr 14, 2011

  • Forum Post: TPS65070 Powered From 3.3V on SYS?

    Scott Burton
    Hello Forum, In my TPS65070 design I plan to power the TPS65070 from a 12V source via a DC/DC converter. This DC/DC converter output could be either 5V or 3.3V, since I already require both of these rails for other loads in my design. However, I’d prefer to use 3.3V since the datasheet curves indicate...
    on Apr 20, 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

  • 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
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