Search tips
Showing 757 results View by: Thread Post Sort by
    Answered

  • UCC28951-Q1: Support on UCC28951-Q1 controller

    Resolved
    Part Number: UCC28951-Q1 Other Parts Discussed in Thread: UCC28951 , UCC28950 , UCC28950EVM-442 Hi Team, Good day! I would like to know if I can use the UCC28951-Q1 PSFB controller for (5-8kW) applications. I have a wide input range up to 800V DC…
    • Resolved

  • UCC28951: UCC28951 sync rectifier problem

    Part Number: UCC28951 Other Parts Discussed in Thread: UCC28950 , UCC28950EVM-442 I am using the UCC28951 PWM IC in a power supply with a 24 Volt input and a 5 volt output. When I enable the synchronous rectifiers, the timing on the UCC28951 becomes unstable…

  • UCC28951: CS Input Pull Down Impedance

    TI Thinks Resolved
    Part Number: UCC28951 Tool/software: Does the UCC28951 clamp or pull down the CS pin once the peak current is detected? I have a generic spice simulation (open loop, without the controller) showing the CS signal does not go to zero after the peak; there…
    • Answered

  • UCC28951-Q1: Controller on primary side

    Resolved
    Part Number: UCC28951-Q1 Other Parts Discussed in Thread: UCC28951 Tool/software: Good morning, I have been involved in power conversion for years, but this is the first time I have used the UCC28951. The documentation available on the site refers to…
    • Resolved

  • UCC28951-Q1: Continuing search for cause of outsized surged in primary current every switching cycle

    TI Thinks Resolved
    Part Number: UCC28951-Q1 Other Parts Discussed in Thread: UCC28951 , UCC28950 , UCC28950EVM-442 Tool/software: Suspecting improper connections or timing of secondary FET gates as the cause of large current surges that overpower reflected secondary current…

  • UCC28951-Q1: Problem with not being able to exit Burst Mode

    TI Thinks Resolved
    Part Number: UCC28951-Q1 Other Parts Discussed in Thread: UCC28951 Tool/software: V_in =390V V_out = 28V P_out =700W N = 12 Hello, I am working with a DC/DC converter with the above values. My R_tmin resistor has a value of 12k. I have no problems…
    • Answered

  • UCC28951: PSFB charger

    Resolved
    Part Number: UCC28951 Tool/software: Hi TI expert, I'm designing a PSFB charger and I would like to use burst-mode for light load operation at the beginning and at the end of the charge to maintain a constant voltage. Is it a good way to use this…
    • Resolved

  • UCC28951: ESD REPORT, Electrostatic Discharge (ESD) Protection

    TI Thinks Resolved
    Part Number: UCC28951 Tool/software: Hi, pls kindly update ESD report ( Electrostatic Discharge (ESD) Protection ) for UCC28951PWR.

  • UCC28951: IC start up issue__MOSFET damage

    Part Number: UCC28951 Tool/software: Hi E2E Currently using UCC28951 to test dcdc products, the vds that output sr during startup will have abnormal spikes, causing the sr mos to burn out. I have tried voltage and current modes so far, and RTmin/DELAB…

  • UCC28951-Q1: Large unexpected additional signal on primary-side current sensing

    TI Thinks Resolved
    Part Number: UCC28951-Q1 Tool/software: I'm working on a power supply design similar to to the evaluation board for this device. (HIgher switching frequency, wider input voltage range, therefore different magnetics; otherwise nearly identical.) My design…

Didn't find what you are looking for? Post a new question.