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

  • UCC28951: Primary side MOSFETs' fault

    Part Number: UCC28951 Other Parts Discussed in Thread: UCC28950 Hello, While testing a 2.5kW PSFB design, it is successfully working and giving expected 48V output at 10% load (5.3 A). But as the load is increased to around 8-9A, MOSFETs B and C are…

  • UCC28951: Ringing on PSFB Secondary and primary

    TI Thinks Resolved
    Part Number: UCC28951 Other Parts Discussed in Thread: UCC27524 , ISO7240CF , UCC27714 , UCC28950 , UCC27714EVM-551 Tool/software: I’m working on bringing up a PSFB power supply design based on the UCC28951. Final goal is to reach 48VDC @ 90A with input…

  • UCC28951-Q1: High side, Bi-directional reverse polarity protection based on N-channel mosfet circuit for output side

    TI Thinks Resolved
    Part Number: UCC28951-Q1 Other Parts Discussed in Thread: UCC28951 Tool/software: Hi TI team, Glad to chat with you, Im designing 24VDC/180A rated charger design for EV vehicle. I have used UCC28951 PSFB controller based design. I need support design…
    • Answered

  • UCC28951: Topology selection

    Resolved
    Part Number: UCC28951 Hi Team My Design inputs: input voltage range 1:- Vin min:316 Vdc, Vin nominal:587Vdc, Vin Max: 815Vdc input voltage range 2:- Vin min:417 Vdc, Vin nominal:700Vdc, Vin Max: 1000Vdc input voltage range 3:- Vin min:417Vdc,…
    • Resolved

  • UCC28951: Load regulation disturbance

    Part Number: UCC28951 Other Parts Discussed in Thread: UCC28950 , Dear Team, We are designing power supply using PSFB controller UCC28951PWR. Our specification is as below. Input : 390V (From PFC) now not connected PFC section used DC source for…

  • UCC28951: Phase-shift full bridge with parallel current doubler output stage

    TI Thinks Resolved
    Part Number: UCC28951 Hi, we are developing a DC-DC PSFB architecture with following architecture: Input voltage is 400V nominal, output voltage is 28V nominal (6KW). The output stage is composed by two transformer with primary windings in series…

  • UCC28951: Lmag Magnetizing Inductance calculation.

    TI Thinks Resolved
    Part Number: UCC28951 Using UCC28951 Excel calculation sheet, I arrived at an Lmag value of 7mH. I Went ahead with Planar transformer Vendor for the design of Transformer. He has manufactured a transformer with lesser Winding inductance of around 1mH…

  • UCC28951-Q1: Primary current is out of shape and causing instability at higher load currents

    TI Thinks Resolved
    Part Number: UCC28951-Q1 Other Parts Discussed in Thread: UCC28951 Tool/software: Hello Mike, Kindly refer to previous post which you closed. The second image of the previous post, it's in DCM mode. Synchronous FETs are not turned ONN. Comparator…

  • UCC28951-Q1: Light load operation (<10% load current ) - Vout oscillation

    TI Thinks Resolved
    Part Number: UCC28951-Q1 Other Parts Discussed in Thread: UCC28951 Tool/software: Hello Team, Spec: Vin - 80 to 120V , Vout - 13.8V , Irated - 35A , Transformer TR - 4.5:1:1 , Fsw - 150kHz, 0.36V @ DCM , Following observation taken with 50% of scaled…
    • Answered

  • UCC28951-Q1: Bode Plot of the compensation circuit in UCC28951-Q1

    Resolved
    Part Number: UCC28951-Q1 Other Parts Discussed in Thread: UCC28951 Are there separate design files for compensation circuit in UCC28951-Q1? or any leads on that !
    • Resolved

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