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TPS65261 / Vout(max)

Tsukui Yusuke
Guru 21930 points
Other Parts Discussed in Thread: TPS65261, SWITCHERPRO
Hi Team,
 
I'd like to ask about TPS65261 webech simulation.
Our customer is going to use TPS65261 on the following condition.
 
◇Vin=10V-17V(4cell battery)
⇒Vout1=8V, Iout(max)=3A
⇒Vout2=1V, Iout(max)=2A
⇒Vout1=4.9V, Iout(max)=2A
 
However, It is not only can enter up to 5.5V in Webench.
Why can not I enter only up to 5.5V?
Could you tell me  value of maximum output voltage of  the TPS65261?
 
 
Best Regards,
Yusuke　/ Japan Disty
 
  • 0
    TI__Genius 9550 points

    Yusuke,

    This is Jason and system engineer for TPS65261.

    TPS65261 can support VOUT 8V.

     Most of customer use TPS65261 for Vout <5.5V, so this "webench" support VOUT <=5.5V for simulation/estimation.

    Please send the schematic to me for reviewing.

    jason.wang@ti.com

     

     

  • 0 in reply to Jason Wang (BSR-MV)
    Guru 21930 points

    Hi Jason,

    Thank you for your support.
    I reported that it is 8V to customers.
    Now, Our customer is considering the TPS65261.
    Our customer is going to use TPS65261 on the following condition.
     
    ◇Vin=10V-17V(4cell battery)
    ⇒Vout1=8V, Iout(max)=2.5A
    ⇒Vout2=1.1V, Iout(max)=1.5A
    ⇒Vout3=4.9V, Iout(max)=1.2A
     
    Can you simulate in this condition?
    Customer has to worry about package temperature and efficiency.
    If you can not answer on the E2E, I want to e-mail directly.
    And If you need more information or if  I should  clarify my comment.
     
    Best Regards,
    Yusuke　/ Japan Disty
     
     
  • 0
    TI__Genius 9550 points
    Yusuke-san,
    Please see my input:
     
    Fsw 600khz
    Room Temperature: 25 deg
     
     
    Efficiency
    Buck1
    Efficiency
    Buck2
    Efficiency
    Buck3
    Die temperature
    VIN 10V
    95%
    80%
    94%
    71 deg
    VIN 17V
    94%
    77%
    93%
    77 deg
     
     
    Regards,
     
    Jason Wang/王栋海
    System/Application Engineer
    Office: （86 10） 59029203
    Mobil: （86）13501192775
    Email:    jason.wang@ti.com
    Address: 15/F Tower E, Beijing Global Trade Center, 36 North Third Ring Road East, Dongcheng District Beijing, 100013, China
     
     
    From: Tsukui Yusuke [mailto:bounce-3456224@mail.e2e.ti.com]
    Sent: Friday, November 14, 2014 9:48 PM
    To: switcherpro@mail.e2e.ti.com
    Subject: RE: [Power and Lighting Tools Forum] TPS65261 / Vout(max)
     

    Hi Jason,

    Thank you for your support.
    I reported that it is 8V to customers.
    Now, Our customer is considering the TPS65261.
    Our customer is going to use TPS65261 on the following condition.
     
    ◇Vin=10V-17V(4cell battery)
    ⇒Vout1=8V, Iout(max)=2.5A
    ⇒Vout2=1.1V, Iout(max)=1.5A
    ⇒Vout3=4.9V, Iout(max)=1.2A
     
    Can you simulate in this condition?
    Customer has to worry about package temperature and efficiency.
    If you can not answer on the E2E, I want to e-mail directly.
    And If you need more information or if  I should  clarify my comment.
     
    Best Regards,
    Yusuke　/ Japan Disty
     
     
  • 0 in reply to Tsukui Yusuke
    TI__Genius 9550 points

    Please see my input:

     

    Fsw 600khz

    Room Temperature: 25 deg

     

     

    Efficiency

    Buck1

    Efficiency

    Buck2

    Efficiency

    Buck3

    Die temperature

    VIN 10V

    95%

    80%

    94%

    71 deg

    VIN 17V

    94%

    77%

    93%

    77 deg

     

    Jason Wang 

  • 0 in reply to Jason Wang (BSR-MV)
    Guru 21930 points

    Hi Jason,

    Thank you for your support.
    Could you tell me the circuit diagram was used to simulate.
    Customer want to reference circuit.
     
    Best Regards,
    Yusuke　/ Japan Disty
  • 0
    TI__Genius 9550 points
    Yusuke,
    Sorry, I have no idea about your request “circuit diagram”.
    Please down load P-SPICE from ti.com for simulation if customer wants.
    And I can check schematic after customer completes.
     
    Regards,
     
    Jason Wang/王栋海
    System/Application Engineer
    Office: （86 10） 59029203
    Mobil: （86）13501192775
    Email:    jason.wang@ti.com
    Address: 15/F Tower E, Beijing Global Trade Center, 36 North Third Ring Road East, Dongcheng District Beijing, 100013, China
     
     
    From: Tsukui Yusuke [mailto:bounce-3456224@mail.e2e.ti.com]
    Sent: Wednesday, November 19, 2014 11:00 AM
    To: switcherpro@mail.e2e.ti.com
    Subject: RE: [Power and Lighting Tools Forum] TPS65261 / Vout(max)
     

    Hi Jason,

    Thank you for your support.
    Could you tell me the circuit diagram was used to simulate.
    Customer want to reference circuit.
     
    Best Regards,
    Yusuke　/ Japan Disty
  • 0 in reply to Jason Wang (BSR-MV)
    Guru 21930 points
    Hi Jason,
     
    Thank you for your support.
    Did the simulation in the attached file?
    Is the Vout of the circuit diagram results of simulation in the 8V?     
     
    Customer has become unstable operation when operating in Vout=8V and Iout=3A.
     
    Best Regards,
    Yusuke　/ Japan Disty
  • 0
    TI__Genius 9550 points
    Yusuke,
    Please send me customer’s schematic to find the cause why operation is unstable.
     
     
    Regards,
     
    Jason Wang/王栋海
    System/Application Engineer
    Office: （86 10） 59029203
    Mobil: （86）13501192775
    Email:    jason.wang@ti.com
    Address: 15/F Tower E, Beijing Global Trade Center, 36 North Third Ring Road East, Dongcheng District Beijing, 100013, China
     
     
    From: Tsukui Yusuke [mailto:bounce-3456224@mail.e2e.ti.com]
    Sent: Thursday, November 27, 2014 11:00 AM
    To: switcherpro@mail.e2e.ti.com
    Subject: RE: [Power and Lighting Tools Forum] TPS65261 / Vout(max)
     
    Hi Jason,
     
    Thank you for your support.
    Did the simulation in the attached file?
    Is the Vout of the circuit diagram results of simulation in the 8V?     
     
    Customer has become unstable operation when operating in Vout=8V and Iout=3A.
     
    Best Regards,
    Yusuke　/ Japan Disty
  • 0 in reply to Jason Wang (BSR-MV)
    Prodigy 10 points
    Dear Jason,

    I'd ask for your help about this condition?
    Vin= 12V AC/DC power supply
    Vout1=10V - 1A
    Vout2=5V - 0.5A
    Vout3=3.3V - 0.5A

    Can you tell me, will it work with TPS65261? Can TPS65261 support 10V output voltage?

    Thank you for your help,
    Best regards,
    Balazs
  • 0 in reply to Balazs Peter Kiss
    TI__Genius 9550 points

    hi Kiss,

    yes, TPS65261 can support Vout 10V when Vin is 12V.

    Please share the schematic to me for check when completes.

    Jason Wang

    jason.wang@ti.com

  • 0 in reply to Jason Wang (BSR-MV)
    Prodigy 30 points

    Dear Jason,

    Thank you for your help. I'll send you the schematic, when it's completed.

    All the best,

    Balazs