• State TI Thinks Resolved
  • Locked Locked
  • Replies 5 replies
  • Answers 1 answer
  • Subscribers 62 subscribers
  • Views 10624 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

About MOSFET package TO-220 or TO-262 compare TO-252

Kuo Nowal
Expert 2315 points

Hi Sir,

We currently promote N-MOSFET, application in  SMPS.

Topology primary side is PFC with LLC,  second side is SR, oppo have 100V_MOSFET 2  pcs per set,

But how do I ask my customer TO-220 or TO-262, D2Pak package can replace TO-252 package ? Compare different package my benefit is where???

please let me know, thanks.

  • 0
    TI__Mastermind 18200 points
    TO-220 and TO-262 (D2PAK) are very similar packages. In fact, you can hand form a D2PAK from a TO-220 by cutting off the clip at the end, and bending the leads.

    The only difference is TO-220 can be bolted down because of the extended tab, where as D2PAK is a surface mount device.

    TO-252 (or DPAK) packages are smaller surface mount devices. While they take up less board space than a D2PAK, they also can't hold as much silicon inside, so their are greater limitations on how low the resistance can go. There are reasons to use a TO220 or a D2PAK, but we would probably recommend using a 5x6 QFN device instead of a DPAK, which is an older package and doesn't offer much advantage aside from being cheap.
  • 0 in reply to Brett Barr1
    Expert 2315 points
    Hi Sir,

    Thanks for your advice, and I still have some question...

    "While they take up less board space than a D2PAK, they also can't hold as much silicon inside, so their are greater limitations on how low the resistance can go."

    resistance mean Rds(on)?

    if yes, what parameter effect MOSFET Rds(on) resistance?
  • 0 in reply to Kuo Nowal
    TI__Mastermind 18200 points
    Yes, resistance means Rdson.

    Rdson is due to the inherent package resistance and the resistance of the silicon die. The resistance of the packages are comparable, but because you can fit a larger silicon die in the D2PAK package, you can achieve lower Rdson with this package (for a higher cost however). That does not mean that all D2PAK's will have lower Rdson than a DPAK, it just means that they have the ability to achieve lower Rdson.

    They can also handle more internal wires connecting the silicon die to the leadframe, which means in some cases they are capable of higher package currents.
  • 0 in reply to Brett Barr1
    TI__Mastermind 18200 points
    I apologize, I have a slight correction to a previous post.

    TO-262 is virtually identical to TO-220 with the external clip cut off. D2PAK actually goes by TO-263, and is also very similar but this is the package with the bent leads.

    TO-252 is DPAK and is the smaller package
  • 0 in reply to Brett Barr1
    Expert 2315 points
    Hi Sir,

    thanks for reply. I will suggest my customer SON5x6 package.