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TPS65023B
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  • Forum Post: Re: TPS65023B DEFLDO[2..1] pins

    Daniel Acevedo
    I'm surprised you connected VINLDO1 to VRTC. What is the load on VLDO1? VRTC can only supply 30 mA when sourced from VBACKUP. Will you please provide schematic and layout along with scope shots of at least VLDO1, VRTC and DEFLDO1? Tglitch or Tdeglitch is the debounce time for /HOT_RESET before...
    on Jun 28, 2011

  • Forum Post: Re: TPS65023 alternate I2C address

    Michael Day
    If you will send an email to m-day@ti.com with customer name, application, volumes, sample date, production date, reason for needing an alternate address, what address they would like, I will forward the information to the product line.
    on Jul 9, 2011

  • Wiki Page: DM8148 power supply 5V solution

    Daniel Acevedo
    Q: DM8148 power supply 5V solution by 805721 Hello, I have a customer working on STB concept with DM8148, they are interested in cheap power supply design for DM8148 (from 5-5.6V) Are any recommendation for powering DM8148 already available? (reference design?) Is any PMU recommended for...
    on Jul 19, 2011

  • Forum Post: Re: TPS65023 VRTC

    Daniel Acevedo
    Yes, the capacitor is needed on VRTC even if it is unused. VRTC may oscillate if the capacitor is not present. Also note, VRTC is an input to the comparator for /RESPWRON.
    on Aug 3, 2011

  • Wiki Page: TPS65023 VRTC Unused

    Daniel Acevedo
    Q: TPS65023 VRTC by 1116450 Does the TPS65023 need a capacitor on VRTC (pin 16) if VRTC is not used (floating)? A: Re: TPS65023 VRTC by 1129650 Yes, the capacitor is needed on VRTC even if it is unused. VRTC may oscillate if the capacitor is not present. Also note, VRTC is an input to the...
    on Aug 4, 2011

  • Wiki Page: TPS65023 /INT

    Daniel Acevedo
    Q: From datasheet I think /INT goes Low at following condition. Is my understanding correct? - Supply correct VCC voltage (ex. 3.3V or 4.2V) - HOTRESET = High - DCDCx_EN and LDO_EN = High - one of VDCDCx or VLDOx goes down to around 90% of required output level Could you let me know what status...
    on Aug 18, 2011

  • Wiki Page: TPS65023 Thermal Pad Connection

    Daniel Acevedo
    Q Can the thermal pad be connected to PCB GND? A: Yes the exposed thermal pad must be soldered for mechanical reasons; in addition, soldering the exposed thermal pad to a copper (as big as possible) plane on the PCB provides good thermal performance. In most cases the largest copper...
    on Aug 18, 2011

  • Wiki Page: TPS65023 VRTC Connection when Unused

    Daniel Acevedo
    Q: TPS65023 VRTC question et al. by 659599 Hello, About TPS65023 VRTC output, I found following description at E2E Website: "If they are not using the VRTC, I would simply connect a small ceramic cap on the VRTC output." Then could you let me know what minimum capacitor value will...
    on Sep 14, 2011

  • Forum Post: Re: TPS65023 i2C pullup voltage

    Darwin Fernandez
    Hi Nuba, VCC provides the power to each of the DCDC converters and the internal control circuitry including the serial interface of the TPS65023. The minimum recommended voltage is 2.5V as stated in the datasheet. The pull-up voltage is a separate matter. Page 4 of the datasheet shows minimum and...
    on Jan 23, 2012

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