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  • UCC28056: UCC28056

    TI Thinks Resolved
    Part Number: UCC28056 Tool/software: I want to design a PFC to meet the following requirements: Input voltage : 240VAC Input frequency : 50Hz Output voltage : 380V DC Output power : 180W Please provide a reference design.

  • UCC28056: PFC for AC-DC Flyback

    TI Thinks Resolved
    Part Number: UCC28056 Other Parts Discussed in Thread: UCC28700 Tool/software: Hi! I am wanting to design an AC-DC converter with this chip that will have the following topology: AC IN (120V @ 60 HZ) > EMC FILTER > PFC (400V OUT) > FLYBACK (12V OUT)…
    • Answered

  • RE: UCC28056: UCC28056

    Resolved
    Yeah what ever your understanding exactly correct. but PFC UCC28056 is turning on But the flyback UC28782 is not turning on. after 30s of power interruption. is there any idea to get out of this issue Our requirement is the time interval of 30s it sholud…
    • Answered

  • UCC28056: Regarding the shutdown of the UCC28056.

    Resolved
    Part Number: UCC28056 Tool/software: Hi team, I have a question regarding the operation of the UCC28056. Is it acceptable to stop its operation by inputting an external signal to the COMP PIN and setting it to LOW? Best regards, Kyohei
    • Resolved

  • UCC28056: UCC28056 Output voltage reduce while increasing power

    Part Number: UCC28056 Tool/software: Initially loaded 4W output and get 398V output voltage. After changed the power from 4W to 8W then output voltage drop to 372V..

  • UCC28056: UCC28056 issue

    Part Number: UCC28056 Other Parts Discussed in Thread: UCC28950 Tool/software: Hi, The customer Liyuan haina is debugging the 300W ACDC power with PFC (UCC28056A) + DCDC PSFB (UCC28950), now one issue for PFC is that at AC 250V input peak voltage with…

  • UCC28056: 187VAC to 528VAC PFC design

    TI Thinks Resolved
    Part Number: UCC28056 Other Parts Discussed in Thread: UCC28051 Tool/software: I want to design a PFC to meet the following requirements: Input voltage : 187-528VAC Input frequency : 45-67Hz Output voltage : 750V DC Output power : 180W My plan was to use…
    • Answered

  • UCC28056: Random OCP Triggering & Secondary Fuse Blowing During 3kV Surge

    Resolved
    Part Number: UCC28056 Hello TI Team, We are using the UCC28056CDBVR in our design and experiencing an issue where overcurrent protection (OCP) randomly activates during 3kV surge testing. The problem is that OCP subsequently triggers OVP2 , which activates…
    • Resolved

  • UCC28056: Device under test goes in protection mode/ Get pluses stops

    TI Thinks Resolved
    Part Number: UCC28056 Tool/software: Hi TI Team, I am using TI part UCC28056 for pre-regulation active power factor controller before DC-DC LLC section. Our specification is as below. Input voltage range : 100V - 264V AC PFC Output : 407VDC. Power…

  • RE: UCC28056: output voltage fluctuation

    38 W LOAD UCC28056.pptx pls find enclosed document for the reference

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