Answered

• UCC28056: Can the UCC28056 be biased from an aux winding on the primary inductor for Vcc?

  

  Shawn Workman

  Resolved

  Part Number: UCC28056 Is it possible to create an auxiliary winding off of the PFC inductor to bias the UCC28056 after startup? Is there an issue doing this with this part and/or any transition mode controller like this? What are the advantages and…

  • Resolved

  • over 5 years ago
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• UCC28056: Can UCC28056 configure to follower boost topology

  

  Eric Lai

  TI Thinks Resolved

  Part Number: UCC28056 Hi Expert, The engineer is asking whether UCC28056 support the follower boost topology. The 1st output voltage is 260V then turn to 380V. The purpose is to get better efficiency. Pls advice whether UCC28056 can support…

  • over 6 years ago
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Answered

• UCC28056: Regulation Issue at higher voltage

  

  abhilash s

  Resolved

  Part Number: UCC28056 Other Parts Discussed in Thread: UCC28780 , Hi I am using UCC28056B version for 60W AC - DC adaptor This is my circuit schematic used what i observed during testing is that , during a particular voltage range from 180VAC to…

  • Resolved

  • over 4 years ago
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• UCC28056: SIMetrix model

  

  Kotaro Yamashita

  TI Thinks Resolved

  Part Number: UCC28056 Hi Team, Do we have SIMetrix model for UCC28056? Regards, Kotaro Yamashita

  • over 5 years ago
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• UCC28056：The input voltage Vin is 180V, the Vcomp pin is saturated, and the Ton should theoretically reach a maximum of 6.92us, but in practice it is only 3.24us (the current does not reach the OCP point)

  

  jie wang

  TI Thinks Resolved

  Part Number: UCC28056 输入电压 Vin 为 180V，Vcomp 引脚饱和，Ton 理论上应达到最大 6.92us，但实际上只有 3.24us（电流未达到 OCP 点）

  • over 2 years ago
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• UCC28056: UCC28056 PF and THD

  

  user1932012

  TI Thinks Resolved

  Part Number: UCC28056 1,The PFC chip part, small package really is a good idea, this single-winding control chip, we have a similar other vendor material, have a certain sacrifice to the PF value and THD, I see the DEMO scheme data posted on the TI network…

  • over 6 years ago
  • Power management
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• UCC28056: Switching frequency of UCC28056

  

  UA&A_CodyDowling

  TI Thinks Resolved

  Part Number: UCC28056 Other Parts Discussed in Thread: UCC28180 Hello, I noticed the comment about offering a way to adjust the switching frequency, but at the time it wasn't mature enough at the time to share. Has any progress been made on this?

  • over 7 years ago
  • Power management
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• RE: UCC28056: UCC28056 question about FET Loss during reverse conduction?

  

  Ulrich Goerke

  Hello Bob, Thank you for your interest in the UCC28056 TM PFC controller. The note on efficiency on page 32 is correct. Your conception of “no voltage applied during reverse conduction” is valid for transmission mode (TM) operation, where the MOSFET…

  • over 6 years ago
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• UCC28056: Schematic review

  

  Kygo Cheng

  TI Thinks Resolved

  Part Number: UCC28056 Hi Team, There is good news that we DIN UCC28056B! Please help review the SCH ,THX

  • over 5 years ago
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• UCC28056: with this part what changes need to make 24V 2A power supply?

  

  KAMAL zinzuvadiya

  TI Thinks Resolved

  Part Number: UCC28056 Other Parts Discussed in Thread: UCC28810 is this refrence design suitable for low voltage bldc fan power supply?

  • over 3 years ago
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