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  • UCC25600-DESIGN-CALC: UCC256404 and UCC24624 unencrypted models

    TI Thinks Resolved
    Part Number: UCC25600-DESIGN-CALC Hello, I am attempting to simulate an ac/dc design and would like to run a sim of the LLC / RC stage with these two parts however the models don't run in simetrix elements - please could I get uynencrypted models…

  • UCC256404: UCC256404 operation at -55°C

    TI Thinks Resolved
    Part Number: UCC256404 Tool/software: Hi, The junction temperature of UCC2564040 is -40°C. Can this IC work up to -55°C or the parts can be screen out to operate at -55°C. Thanks Ankit

  • UCC256404: Ucc256404 not start with full load

    Part Number: UCC256404 Tool/software: I have problem to start modified eval board UCC25640EVM-20. New transformer is wound to secondaty winding to 80V. Primary to secondary turns ratio is 2,36, Primaty bias yurns ratio is 11. Calculation is attached…

  • UCC256404: LLC-SRC Design

    Part Number: UCC256404 Tool/software: Looking at technical articles：《LLC design considerations for audio amplifiers》, I found that there is a related article for APEC 2023，《 IS14.2 - Designing an LLC Resonant Converter for Audio Applications with High…
    • Answered

  • UCC256404: severe gap in pdf document structure (in pdf viewer)

    Resolved
    Part Number: UCC256404 Compared to UCC25630x datasheet, the document structure in SLUSD90E (UCC25640x, latest version) lacks a list of chapter/section entries between pages 40 and 66. At page 39, System State Machine is presented, and then, the contents…
    • Resolved
    • Answered

  • UCC256404: Switching at 200kHz during the burst OFF period.

    Resolved
    Part Number: UCC256404 I think that switching should not occur during burst OFF periods. However, under certain load conditions, switching at a high frequency of around 200 kHz is occurring during periods that appear to be burst OFF. Is this correct operation…
    • Resolved

  • UCC256404: Feedback loop oscillation

    TI Thinks Resolved
    Part Number: UCC256404 Tool/software: LLC Converter feedback loop not stable.docx Pls see the Document for system details and Problam statement. My CV Loop is fully stable but in CC Loop , whole system oscillates at 2.6Khz . Can someone suggest right…

  • UCC256404: Alternative Adjustable Output Voltage Power Converter Architecture

    Part Number: UCC256404 Other Parts Discussed in Thread: UCC25661 Hello, I am designing a PSU for an audio system with the following specs: Vin = Rectified AC mains (worldwide) + PFC stage. Vout = Adjustable from 30V to 50V. Load current = 2.5A…

  • UCC256404: Surge immunity Issue fro UCC256404 and UCC28019

    TI Thinks Resolved
    Part Number: UCC256404 Other Parts Discussed in Thread: UCC28019 , UCC24624 Tool/software: Dear Sir, I have new issue with surge immunity for my charger for EV new design the issue is when surge immunity test the POWER MOSFET for half bridge,POWER…
    • Answered

  • UCC256404: Input current oscillations when controller changed to UCC256404 (add controller heating)

    Resolved
    Part Number: UCC256404 Other Parts Discussed in Thread: PMP21683 , , UCC256302 , UCC256402 Tool/software: We are updating the controller (UCC 25630x to UCC256404) on a TI LLC reference design (PMP21683) and are following the TI migration paper (SLUA 996A…
    • Resolved

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