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65950
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  • Forum Post: Does the TPS65950 charger really work?

    MikeW9894
    Hello, I've been trying to get the battery charger interface working and the results are less than amazing. The schematic is identical to the one in the datasheet. It is the dual path (AC and USB) with CV mode possible and the 850mA current limit at startup circuit. There's no deviation from...
    on Aug 7, 2009

  • Forum Post: TPS65950 PCHGAC and PCHGUSB function and RC compensation network

    Perry Robbins
    1) What are the design rules for choosing values for the resistors connected to PCHGAC and PCHGUSB? 2) What are the design rules for choosing values for the RC compensation network, when connected to support the CV mode?
    on Apr 6, 2010

  • Forum Post: ADIN1 pin on TPS65950

    Chris R
    Where is pin ADIN1? It is referenced several times in the datasheet and TRM, but not identified as to which pin it is. What about ADIN0 and ADIN2? Thanks, Chris
    on Apr 20, 2010

  • Forum Post: TPS65950 Cannot bypass TX Digital Audio Filter Module

    Rafael Christ
    I'm using TPS65950 to sample 2 analog signal at the same time with AUXL/R. The system is running Angstrom on Overo board from Gumstix. I'm using i2c to set registers and alsa arecord to get the samples. The documentation about the Digital Audio Filter Uplink Path says that the HPF can be bypassed...
    on Jan 5, 2011

  • Forum Post: Audio driving differences between TPS65950 and TPS65930 for WinCE 6.0 BSP

    Zack Zadecki
    Hi, We've created a board with OMAP 3530 (3730 in next revision) processor and the TPS65930 chip. We use WinCE 6.0 (we plan to move to 7.0), and all the drivers in BSP is prepared for TPS6550. They should be compatible, but we have some problems there - we cannot hear any sound. We are still working...
    on Jun 9, 2011

  • Forum Post: How to triger the sending action of Power Bus Message

    lu edward
    Hi : ALL Anynoe knows the way how to send the "Power Bus Message" in formate of either "Broadcast Message" or "Singular Message"? [A]: if I set the register separately as : 1.DEV_GRP[0:2] 2.SLEEP_STATE[0:3] 3.OFF_STATE[0:3] 4.RES_STATE[0:3] 5.<Resource>_DEDICATED...
    on Dec 27, 2011

  • Forum Post: Re: TPS65930 RTC backup mode is not working when VBAT is removed.

    Hui Ye
    Hi I meet similar situation now. I used ML414R as backup battery, which is rechargable. And find the RTC of some device didn't work when VBAT is "taken away". The BKBAT drop down to 1.2V for about 10ms. We set CFG_BOOT CK32K_LOWPWR_EN to 1, this can extend backup battery time, but cannot...
    on Dec 29, 2011

  • Forum Post: Re: TPS65930 RTC backup mode is not working when VBAT is removed.

    Alexis Piton
    Hi elton, At 2.5V, ML414R is fully discharged then the observed dip is totally normal. Default end of charge voltage in the PMIC backup battery charger is 2.5V. You need to change this value to 3.1V to fully charge ML414R. End of charger threshold is configurable through BB_CFG registers, BBSEL...
    on Jan 3, 2012

  • Forum Post: About TPS65950 RSCOMPAC / CCOMPAC Circuit Question

    March Jasper
    Dear All Now I checked for TPS65950 design circuit for Data Manual and Application Report. But we found for some diffrent for RSCOMP / CCMPAC between ICTLAC1 and VSS. About Data manual Fig 8-1 and Fig 8-2 , These RSCOMP / CCMPAC are between ICTLAC1 and VSS. Data Manual Fig8-1 Data Manual...
    on Feb 13, 2012

  • Forum Post: About TPS65950 ADCIN9 can not read BKBAT Voltage.

    March Jasper
    Dear All Now I have question for TPS65950 ADCIN9 setting. I think this ADCIN9 function enable for this resiter control only. Resister : BB_CFG [4] bit Function : BBCHEN -> "1" But I can not read BKBAT Voltage . Quesiton Q1 : About ADCIN9 resiter setting , Is this...
    on Mar 19, 2012

  • Forum Post: Single ended microphone connected in a Differential mode [TPS65950A3]

    Mahesh Hooli
    Hi All, Can we interface single ended analog microphone to TPS65950 with the differential mode connection?. We could see two types of connection (Pseudo differential mode and differential mode) is possible for PMIC. Will the performance of microphone get affected since single ended mic is connected...
    on Nov 8, 2012

  • Forum Post: RE: Pop noise, TPS65950A3, Pre.driv

    Mahesh Hooli
    Hi, To debug the above Pop noise issue, we isolated the Predriv_L from Class D amplifier input and probed the Predriv_L line. By default the Predriv_L line is low (0V). Whenever I execute command amixer cset name='PreDriv Playback Volume' 3,3, It rises to 1V very sharply and comes down. ...
    on Nov 8, 2012

  • Forum Post: PMIC for Am3505

    FF
    Hello, Can TPS65951 be used with AM3505, it is picked since Audio is needed, thanks
    on Oct 23, 2012

  • Forum Post: TPS65950 battery current sense?

    Perry Robbins
    It is difficult to accurately predict the current draw of the OMAP and peripherals in our system, they will vary greatly. Since the BCI shares the battery charge current with the system, wouldn't it make sense to run the system from the FET side of the current sense resistor and therefore have accurate...
    on Apr 6, 2010

  • Forum Post: How to configure Predriver output?. [Pop noise]

    Mahesh Hooli
    Hi, We are using Predriver output to drive an external Class D amplifier and we are eeing pop noise at the beginning and at the end of the audio. To debug the above Pop noise issue, we isolated the Predriv_L from Class D amplifier input and probed the Predriv_L line. By default the Predriv_L...
    on Nov 12, 2012

  • Forum Post: TPS65950 starting events

    shekhar SAINI97194
    We require TPS65950 to start on when main power is applied to it as we are not using PWR on button to turn it on. We understand the PMIC will start up as the power is applied to it but this is due to errata no. 22. We doubt that in future errata would be removed and we would not have any option to...
    on Jan 11, 2013

  • Forum Post: USB OTG with 3530/3730 and TPS65930

    Zack Zadecki
    Hi, We've created a board with OMAP 3530 (3730 in next revision) processor and the TPS65930 chip. We use WinCE 6.0 (we plan to move to 7.0), and all the drivers in BSP is prepared for TPS6550, which is on the EVM board. They should be compatible, but we have some problems with the USB OTG port...
    on Jun 17, 2011

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