Non-Isolated DC/DC

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Non-Isolated DC/DC

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  • Wiki Page: TPS63020 Buck-Boost Operation

    Daniel Acevedo
    Q: Could you please briefly tell me which MOSFETs are on/off and which MOSFETs are switching when in each mode? A: In Buck Mode, Q3 is on always and Q4 is off always and Q1 and Q2 are switching. In Boost mode, Q1 is on always and Q2 is off always and Q3 and Q4 are switching. When VIN is near...
    on May 16, 2012

  • Wiki Page: TPS63020 VINA Pin Connection

    Daniel Acevedo
    Q: TPS63020 by 1013270 Should the VINA pin be also connected to VIN or is it internal connected? A: Re: TPS63020 by 1129650 VINA should be connected to a 0.1uF ceramic capacitor. VINA has an internal connection to VIN and does not need to be externally connected to VIN if the 0.1uF capacitor...
    on May 11, 2012

  • Wiki Page: TPS63020 Line and Load Regulation Spec

    Daniel Acevedo
    Q: TPS63020 Line and Load Regulation Spec by 1129650 Referring to the Electrical Characteristics table in the datasheet, how can the line and load regulation be 0.5% if the output voltage regulation is 5%? A: Re: TPS63020 Line and Load Regulation Spec by 1129650 First note that the regulation...
    on Apr 18, 2012

  • Wiki Page: TPS63020: VINA not connected to VIN, any issues?

    Daniel Acevedo
    Q: TPS63020: VINA not connected to VIN, any issues? by 16027 We have a board that has a TPS63020. Its VINA and PSSYNC pins were tied together, but not tied to VIN. The data sheet recommends: " To make sure that the internal control circuits are supplied with a stable low noise supply voltage...
    on Oct 28, 2011

  • Wiki Page: TPS63010 vs. TPS63020 power dissipation

    Daniel Acevedo
    Q: TPS63010 vs. TPS63020 power dissipation by 1579618 Team, The TPS63010 is being used to regulate a 4.5V - 5V rail to 5V @ 1A max. The PCB is 6-layers with 2 GND planes about 3.8" x 1.5" size. The concern is with the TPS63010's ability to dissipate power which is spec'd for approximately...
    on Jul 21, 2011

  • Wiki Page: TPS63010 Efficiency Graph

    Daniel Acevedo
    Q: Requests the Efficiency Graph of TPS63010 by 1684384 Customer requested the efficiency graph of TPS63010 that X-axis is current, Y-axis is efficiency when VIN=4.0V and VOUT=3.3V. There is similar graph in the datasheet, but not same condition ( VIN=4.0V and VOUT=3.3V). Could you send me...
    on Jul 21, 2011

  • Wiki Page: TPS63020 and BQ24020 Ground and Power Ground (GND & PGND)

    Daniel Acevedo
    Q: TPS63020 by 1013270 , Please find the following question regarding the GND and power ground of the TP63020 and bq24020. The charger bq24020 powers up (VIN) the SPS TP63020. Can the charger ground be the same plan as the SPS GND pin 2. In all hoe should the ground separation between the two IC...
    on Jul 18, 2011

  • Wiki Page: TPS63020 and BQ24020 Ground and Power Ground (GND and PGND)

    Daniel Acevedo
    Q: TPS63020 by 1013270 , Please find the following question regarding the GND and power ground of the TP63020 and bq24020. The charger bq24020 powers up (VIN) the SPS TP63020. Can the charger ground be the same plan as the SPS GND pin 2. In all hoe should the ground separation between the two IC...
    on Jul 18, 2011

  • Wiki Page: TPS63020 Additional Input/Output Capacitors

    Daniel Acevedo
    Q: TPS63020 by 1013270 , From page 12 from the PDF file (TPS63020EVM User's Guide) it seems that there are six capacitors, from the layout point of view (page17) there are additional two more capacitors. A: Re: TPS63020 by 1129650 , The additional capacitors in the schematic and pads on...
    on Jul 18, 2011

  • Wiki Page: TPS63020 Vout deviation in power save mode

    Daniel Acevedo
    Q: TPS63020 Vout deviation in power save mode by 1433869 Hi: Sorry need you guys help. 1. Could you provide Vout’s deviation in power save mode? 2. Do you have formula about estimating Vout range in power save mode? 3. Why Vout in save mode is a little higher than PWM mode's...
    on May 5, 2011

  • Wiki Page: TPS63xxx - minimum duty cycle in buck mode

    Chris Glaser
    All of the TPS63k devices have a minimum duty cycle in buck mode. This is a result of needing enough time to sample the current for the average current mode control. The minimum duty cycle is 30% typical and 40% maximum, as noted in the TPS63020 datasheet. This shouldn't be an issue in most...
    on Mar 4, 2011

  • Wiki Page: TPS63020 split supply operation

    Michael Day
    Q: TPS63020 split supply operation by 282017 Is it possible to put a separate low current supply into VinA and another, wider varying voltage into Vin? The UVLO appears to be on the VinA, so is it possible to run at lower input voltages on the power stage Vin if VinA is still in spec? A resistor is...
    on Jan 24, 2011

  • Wiki Page: TPS63000 Buck/Boost Transition

    Michael Day
    Q: TPS63000 Buck/Boost Transition by 1294176 Team, Can you please comment on the buck to boost transition point in terms of input voltage vs. output voltage for the TPS63000? In particular, does this behavior depend upon the load current? A: Re: TPS63000 Buck/Boost Transition by 10449 ...
    on Sep 9, 2010

  • Wiki Page: TPS63020 Pgood sink current capability question?

    Michael Day
    Q: TPS63020 Pgood sink current capability question? by 1023006 Hello, Could you let me know Pgood sink current capability of TPS63020? I saw datasheet and switch pro, they use 1M ohm for Pgood pull higih resistor to 3.3V output terminal. Is mean the Pgood sink current capability is very low? ...
    on Aug 20, 2010

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