• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 63 subscribers
  • Views 517 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

TPS62180/about operating topology

Tsukui Yusuke
Guru 21930 points
Other Parts Discussed in Thread: TPS62180

Hi,

Could you tell me about TPS62180?
The topology of operation principle of Dcap and DCS exists.
However,There is no documentation for this device.
Please tell me the material.

Best regards,
Yusuke/Japan Disty

  • 0
    TI__Intellectual 1335 points

    Dear Yusuke-san,

    the control topology of TPS62180 doesn't differ from the commonly known peak current control topology, as stated in the datasheet.

    Though, since a dual phase approach, two identical control loops regulate phase shifted to a common target (VOUT).

    The actual phase current is measured (separately for each phase) and compared to the peak current target. This represents the on-time.

    The off-time is set according to the duty cycle by an off-timer circuit. With that a fixed switching frequency is achieved in steady state condition.

    The Functional Block Diagram in the datasheet represents this structure.

    Hope this helps for better understanding.

    Thanks and Regards

    Carsten

  • 0 in reply to casc
    Guru 21930 points

    Carsten-san,

    Thank you for your quick response and support.
    Could you more inform me of your comment?

    ’’Though, since a dual phase approach, two identical control loops regulate phase shifted to a common target (VOUT).
    The actual phase current is measured (separately for each phase) and compared to the peak current target. This represents the on-time.’’

    Please tell me how to shift the phases of phase1 and phase2.
    And,Do you have materials like following?
    www.ti.com/.../slyt531.pdf

    Best regards,

    Yusuke/Japan Disty



  • 0 in reply to Tsukui Yusuke
    TI__Intellectual 1335 points
    Yusuke-san,

    the two phases of TPS62180 are shifted by a fixed time of about 250ns. This corresponds to a 180° phase shift at a switching frequency of 2MHz.

    There is no application note like slyt531.pdf for this device.

    Thanks and Regards
    Carsten