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.

TPS57060-Q1: Reference value for Maximum of Ton-min

Part Number: TPS57060-Q1

Hi Team,

My customer is trying to use TPS57060 DCDC converter with configure of 2MHz condition.

System requirement : 

- Vin range ( 10V to 32V)

- Vout = 9V

- Fsw = 1.9MHz to 2MHz

Q.1) Inside the datasheet, only Ton-min typical value is described as 130ns. Could you provide upper limit of Ton-min to judge if it's available with 2MHz operation?

Q.2) If required on-time < Ton-min, is there any concern in terms of operation other than frequency shift down to AM frequency range?

Q.3) When Vin=10V, duty would be 90%. Will this condition be OK with TPS57060 as it's described device operates with 100% duty?

Best regards,

  • Hello,

    I will look into your questions above and provide additional feedback on the data which we can share. As a starting point:

    Q1) I will need to ask the product team if we have this data available.

    Q2) This will depend on the range of input voltages at which the device will have on time < Ton-min. In extreme cases the frequency can shift to the AM frequency range. However, this depends on your duty cycle (Vout/Vin) and on time limitations as you pointed out.

    Q3) As you mentioned this will be OK since the device can operate with 100% duty.

    Best Regards,
    Katelyn Wiggenhorn
  • Hello Katelyn-san, team,

    Thanks a lot for your support.
    Customer is now in device fixing phase, so could you provide answer for Q.1 asap?
    Best regards,

    Nobuo Fujihara
  • Hell Fujihara-san,

    Since the answer to your first question is not public information, I am going to close the E2E post and let's continue discussing over e-mail.

    Best Regards,