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Showing 44 results View by: Thread Post Sort by
  • kura
    kura
    • 1 month ago
    • Power management
    • Power management forum

    UCC24636: SR timing delay

    TI Thinks Resolved
    Part Number: UCC24636 Our customer found folloing SR timing delay waveform. (delay time: about 550ns) <Condition> IN:DC240V-DC340V OUT:13.5V/4A Also they didn't found low Vin and light load condition. CH1...
  • kura
    kura
    • 2 months ago
    • Power management
    • Power management forum

    UCC24636: DRV ON time

    TI Thinks Resolved
    Part Number: UCC24636 Our customer consider to use UCC24636 with Low-Side SR Configuration. Please see attched waveform. 2541.waveform.xlsx 1.Is this waveform normal .? 2.Can they extend DRV ON time ? Please let us know how to extend DRV ON time...
  • kura
    kura
    • 5 months ago
    • Power management
    • Power management forum

    UCC24636: RVPC,RVSC

    TI Thinks Resolved
    Part Number: UCC24636 Our customer consider to use UCC24636 with High-side SR configuration with Bias winding. Please check attached fole and advise about RVPC,RVSC. UCC24636.xlsx
  • Lei wang
    Lei wang
    • over 2 years ago
    • Power management
    • Power management forum

    UCC24636: UCC24636

    TI Thinks Resolved
    Part Number: UCC24636 Hi Sir: I use the ucc24636 as auxiliary power controller, Vout =12V.. And I use the excel UCC24636-Calc to set the external resistance. I have a resistor Q1 in parallel and Q1 is 1200V MOSFET. it Out of work,The Vout i can get...
  • Benjamin Lough
    Benjamin Lough
    • over 2 years ago
    • Power management
    • Power management forum

    RE: UCC24636: possible to use for output voltage Vout = 31V ?

    Hi Martin, You could a resistor + zener to clamp the maximum voltage on the VDD pin. You will also want to make sure the VPC and VSC pins do not exceed their max voltage rating as well (abs max rating of 4.5V for both pins) Another option is to...
  • Chirag Panchal2
    Chirag Panchal2
    • 8 months ago
    • Power management
    • Power management forum

    RE: Selection of isolated flyback controller IC

    Hi Eric, Thank you for your detailed explanation. Does UCC28740 provide short circuit protection like UCC28742 as I have not found anything in its datasheet? In addition, I have recently come across the above design and wondered what is the benefit...
  • Ulrich Goerke
    Ulrich Goerke
    • 9 months ago
    • Power management
    • Power management forum

    RE: UCC24636: DCDC CONVERTER, FLYBACK, 80-160V IN, 120V OUT, 1A, WEBENCH

    Hello Jim, Thank you for your interest in the UCC24636 SR controller (and UCC28740 flyback controller). You are correct; the UCC24636 cannot be directly powered from a 120V source. Nor can the 100-V MOSFET, and also not the shunt regulator. I...
  • Hong Huang
    Hong Huang
    • over 1 year ago
    • Power management
    • Power management forum

    RE: UCC28740: Device not starting, Gives one pulse per second

    Can you also update the schematics and send the updated to me? The one you sent to me does not show the secondary diode to UCC24636.
  • Jaden Ning
    Jaden Ning
    • over 1 year ago
    • Power management
    • Power management forum

    RE: Inquire TI device to replace LTC3825

    Hi Edward, We have lots of PSR controllers to replace LTC3825, Such as UCC28704 and UCC28730, if customer want a ultra low standby power UCC28730 is recommended . otherwise , UCC28704 is proposed. both of them don't have SR signal on primary side...
  • Yoshwa
    Yoshwa
    • over 4 years ago
    • Power management
    • Power management forum

    UCC24636 : How does it operate when entered into CCM mode?

    TI Thinks Resolved
    Our customer is designing a UCC24636 application. He asked how dose UCC26363 work when entered into the CCM mode condition caused by an abnormal operation such as an over load. Of cause it has been designed in DCM mode condition. What kinds of behaviors...
>

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