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Does there exist a Wiki site for power management? (re-posted from Linear Regulator forum)

Anonymous
Anonymous
Other Parts Discussed in Thread: TPS54310, TPS65070

Hi,

 

I would like to ask a question on power management.

 

For processors, there is a TI Wiki site: http://processors.wiki.ti.com/index.php/Main_Page which contains lots of information. However, on the wiki site there is not any information about power management, which is consistent with the "processors" string within the URL.

 

There are many different types of power management solutions: switch regulator, linear regulator, PMIC, etc. Is there a similar wiki site for them?

 

I have no knowledge on the difference between various types of regulators. How should I select the right solution?

 

 

 

Zheng

 

  • 0
    TI__Mastermind 36110 points

    There is not an identical wiki page for power at TI.  The best place to get techical support for power is from you local distributor FAE. They will be able to assist with component selection and helping you to understand the tradeoffs between different solutions.  www.ti.com also has many application notes for power supplies.  Click on "power management" and you will find the Power Quick Search tool that helps you select the power IC to meet your electrical requirments.  Your local power FAE can help you with the details of the design.

  • Anonymous
    0 Anonymous in reply to Matthew Day

    Michael,

     

    I previously used TPS54310 on my customized board for DM6437 power supply, and the whole board was supplied with an adapter which outputs 5V from home AC 220V, and the 5V is in turn fed into TPS54310 to convert to 3.3V, 1.2V and 1.8V voltage respectively.

     

    If the final product is a portable product, can I still use TPS54310? Should I change to products under "Battery Management Products" category, for example, TPS65070 PMIC? What are the differences between TPS54310, PMIC, LDO regulator and so on?

     

     

     

    Zheng

     

     

  • 0 in reply to Anonymous
    TI__Mastermind 36110 points

    LDO's provide lower noise output, but typically operate at a lower efficiency.  The battery power products will have features that provide higher efficiencies at lighter load currents.  A PMIC or PMU is simply a power supply IC that integrates more than 2 power supplies (and sometimes a charger or other functionality) into a single package.  If you contact your local distributor, you can get detailed design support for your project.  Also visit the power management page at www.ti.com to review the "Power & Analog for Processors and FPGA's" tool that might already proivde a solution for your processor. 

  • Anonymous
    0 Anonymous in reply to Matthew Day

    Michael,

     

    When you are doing the comparison using "lower" "higher" and "lighter", are you comparing with TPS54310?

    LDO's provide lower noise output, but typically operate at a lower efficiency. 

    The battery power products will have features that provide higher efficiencies at lighter load currents. 

    A PMIC or PMU is simply a power supply IC that integrates more than 2 power supplies (and sometimes a charger or other functionality) into a single package. 

     

    And are PMIC and PMU synonyms?

     

    And for TPS54310, the manual says it has up to 3-A output, which is more than enough for many applications. "The battery power products will have features that provide higherefficiencies at lighter load currents. ", does this mean if I find TPS54310 has more capacity than enough, I might switch to battery power products or PMIC/PMUs?

     

    LDO stands for low-dropout regulator, however I don't understand the technical differences between

    1.    Linear regulator

    (1). Single/double channel LDO

    (2). LDO Controller

    2.    Switch regulator (e.g. TPS54310)

    (1). Integrated switch

                                                      i.    Step-Down/Up

                                                     ii.    Buck-Boost

                                                    iii.    Inverting

                                                    iv.    Isolated

    (2). External Switch

    (3). Charge Pump

     

    Could you explain briefly the characteristics, differences and application of these types?

     

     

    Zheng