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Showing 10 results View by: Thread Post Sort by
  • Yunsheng Qu
    Yunsheng Qu
    • 2 months ago
    • Power management
    • Power management forum

    RE: UCC25640EVM-020: Over load protection

    Hi, Ala 1. BMTL is defined by LLSS resistor divider, i suggest you use pull high resistor ad 470kohm and pull low resistor as 200kohm. and short BW pin to GND. 2. other element affect burst mode threshold is VCR pin capacitor divider, you should decrease...
  • Darren (FAE)
    Darren (FAE)
    • 5 months ago
    • Power management
    • Power management forum

    UCC25640EVM-020: Functionality Questions

    • Resolved
    Part Number: UCC25640EVM - 020 On the EVM, when HV pin is tied to PGND and VCC supplied
  • Darren (FAE)
    Darren (FAE)
    • 7 months ago
    • Power management
    • Power management forum

    UCC256404: Questions about Usage in LLC Application

    TI Thinks Resolved
    Part Number: UCC256404 I have a customer working on an LLC (LCC-type for wide Vin) resonant design, and considering the UCC256404. But he has some questions, and your help would be hugely appreciated. The UCC256404 will be used for a DC input voltage...
  • Hong Huang
    Hong Huang
    • 11 months ago
    • Power management
    • Power management forum

    RE: UCC256402: UCC256402

    The board part number is UCC25640EVM-020
  • Eric Faraci
    Eric Faraci
    • 9 months ago
    • Power management
    • Power management forum

    RE: UCC256302: Incorrect duty cycle in gate signal

    Ehsan I'm not sure which "feedback resistor" you are referring to. Is it the same as R19, R23 in UCC25640EVM-020? If this resistor divider network is different than what you expect, the LLC converter can be operating at a point that...
  • Mike O'
    Mike O'
    • over 1 year ago
    • Power management
    • Power management forum

    RE: UCC256404: UCC256404 Won't start up

    Hello, I reviewed the excel tool and the calculated Np/Ns was 8.125 and your design had chosen 9. To get the proper output voltage you would generally round down to the lowest whole turn. I would consider making this 8. I reviewed your schematic...
  • Eric Faraci
    Eric Faraci
    • 8 months ago
    • Power management
    • Power management forum

    RE: UCC256304: Bias winding and auxiliary bias

    Paolo First I'd like to make sure that it's clear on the differences between UCC25630x and UCC25640x. UCC25640x is a generational, pin-to-pin compatible improvement over UCC25630x. Details of improvements are in the following app note https...
  • Desheng, Guo
    Desheng, Guo
    • 8 months ago
    • Simulation, hardware & system design tools
    • Simulation, hardware & system design tools forum

    RE: TIDA-010038 Any evaluation board to loan?

    Hi, Poh Thanks for interesting in this reference design from SEM team, but this board TIDA-010038 is out of stock now. But, the two TI EVM boards (PFC and LLC) could be applied, you can combine these two together instead. https://www.ti.com/tool...
  • Kim nordtorp Madsen
    Kim nordtorp Madsen
    • 7 months ago
    • Power management
    • Power management forum

    RE: UCC256402: Loop gain equations for the UCC256402

    Hi Hong Huang the datasheet claims: "Hybrid hysteretic control (HHC) – Best-in-class transient response" - but there is no detailed design how to get to the "best in class transient responce" lets take the eval board UCC25640EVM...
  • Peter Baxter
    Peter Baxter
    • over 1 year ago
    • Power management
    • Power management forum

    UCC25600: UCC256404 Resonant Capacitor Cr - Capacitive Divider?

    • Resolved
    data sheet). The UCC25640EVM - 020 Evaluation Module contains full schematics which do show the upper

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