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

  • UCC28951: PMP8740: CC/CV controllers

    Resolved
    Part Number: UCC28951 Tool/software: Hi. I am going to use the UCC28951PWR to control my PSFB; however, I am having a problem with my simulation. I am using PSIM to verify my power stage, and it is working correctly. Both CC and CV controllers are…
    • Resolved

  • UCC28951-Q1: UCC28951-Q1 based IC UCC28951-Q1 for input 390VDC to 410VDC and output 25VDC to 120VDC at 500W constant output power solution

    TI Thinks Resolved
    Part Number: UCC28951-Q1 Tool/software: Hi, Can I use this IC UCC28951-Q1 for input 390VDC to 410VDC and output 25VDC to 120VDC at 500W constant output power? If yes, how to manage duty cycle and transformer ratio. Please provide a solution.

  • UCC28951: Queries

    TI Thinks Resolved
    Part Number: UCC28951 Tool/software: Hello Mike, 1. The Excelsheet calculator provided mentions Dmax as 0.66 ? datasheet says it can go upto 95%. Can we manually Adjust Duty cycle as per our requirement ? 2. The excel tool considers 20% ripple…

  • UCC28951-Q1: UCC28951 PSFB DC-DC

    TI Thinks Resolved
    Part Number: UCC28951-Q1 Other Parts Discussed in Thread: UCC28951 Tool/software: Dear Sir, We are using UCC28951 for designing PSFB Board for 4kW Charger. The dead time(DT) is Non-Uniform and there is a difference in Dead Time(DT1) and dead time…

  • UCC28951: UCC28951: Design Equation Correction

    Part Number: UCC28951 Tool/software: The connection of a resistor to the SS/EN pin cause an exponential relationship in the capacitor voltage (parallel resistor and capacitor with constant current source) The voltage equation of the capacitor should…

  • UCC28951: UCC28951 PSFB with Full-Bridge SR

    TI Thinks Resolved
    Part Number: UCC28951 Tool/software: Posting for a colleague: Project Specs: Vout: 24VDC Vin: 550V P=500W I am using UCC28951 (PSFB topology) IC for DC-DC isolated power supply project. I have a full bridge synchronous rectifier on the low voltage …
    • Answered

  • UCC28951: Power supply module with interleaving

    Resolved
    Part Number: UCC28951 Other Parts Discussed in Thread: UCC2895 Tool/software: Hello! Does anyone have an experience with the interleaving oof the power supply modules based on the UCC28951? How can be done interleaving and current shearing for the…
    • Resolved

  • UCC28951: Regarding calucuration tool(SLUC222) estimated component error value

    TI Thinks Resolved
    Part Number: UCC28951 Tool/software: Hi team, Our customer would like to know the allowable tolerance for component values calculated using the calculation tool (SLUC222). In this tool, resistors are indicated as “E48”; however, my understanding…
    • Answered

  • UCC28951: Vout issue at no load

    Resolved
    Part Number: UCC28951 Tool/software: Hi, Below is my design setting Vin min=35V, Vin max 60V, Vout 4V/130A, Fsw: 300kHz, center tapped transformer PQ3235 core, 45uH, 5:1:1T, turn ratio 5, leakage inuctance: 1uH. No Shin Inductor, Vin cao: 1066uF,…
    • Resolved

  • UCC28951: magnetizing Inductance

    TI Thinks Resolved
    Part Number: UCC28951 Tool/software: Vin MIN : 400VDC VinmAx : 950VDC Vin ( Typ ) : 600VDC 1. the question is primary magnetizing inductance of a psfb transformer should be selected considering Max input voltage or minimum Input Voltage ? Considering…

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