Answered

• UCC28056: UCC28056 has low efficiency and abnormal inductive current spikes

  

  Gabriel Wang1

  Resolved

  Other Parts Discussed in Thread: UCC28056 Dear Expert Could you give some advice how to reduce the pfc inductor spikes and imporve efficiency . The customer outputs 100W and 20V5A from the ready-made solution of the existing model, but changes the power…

  • Resolved

  • 5 days ago
  • Power management
  • Power management forum
Answered

• UCC28056: UCC28056 maximum Ton time calculation

  

  Ola Baath

  Resolved

  Part Number: UCC28056 Hi, I have a follow up question to the previous Ton time calculation question asked a few days ago. Specifically the maximum on time for a certain gff. For example at 230 Vrms. Gff is then the sixth selector, which equals 0.158.…

  • Resolved

  • 2 months ago
  • Power management
  • Power management forum
Answered

• UCC28056: UCC28056 Capcitor in noise is high

  

  Gabriel Wang1

  Resolved

  Part Number: UCC28056 Error voltage back difference between PFC on and off, C1, C39 noise is very big. I guess the voltage of the PFC switch back is too high. Is there any way to reduce the return voltage.

  • Resolved

  • 2 months ago
  • Power management
  • Power management forum

• UCC28056: Does UCC28056 have Brown in & out function ?

  

  Kygo Cheng

  TI Thinks Resolved

  Part Number: UCC28056 Hi, Does UCC28056 have Brown in & out function ? THX

  • 3 months ago
  • Power management
  • Power management forum

• 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

  • 27 days ago
  • Power management
  • Power management forum
Answered

• UCC28056: X-CAP discharge function

  

  Rock Shao

  Resolved

  Part Number: UCC28056 Other Parts Discussed in Thread: UCC28630 Hi, My customer has a project want to found the solution as the below, AC/DC 90W, output 30V with PFC+flyback, needs X-CAP discharge and no load<150w, Is UCC28056+UCC28630 can meet this…

  • Resolved

  • 20 days ago
  • Power management
  • Power management forum
Answered

• UCC28056: DC input for PFC

  

  Charles Zhang1

  Resolved

  Part Number: UCC28056 Hi Team, Can UCC28056 support for 135-370VDC input condition? Regards,

  • Resolved

  • 29 days ago
  • Power management
  • Power management forum
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 disadvantages…

  • Resolved

  • 2 months ago
  • Power management
  • Power management forum

• UCC28056: Ton Calculation

  

  Renan Santos Adriano

  TI Thinks Resolved

  Part Number: UCC28056 Hello Team, Good day. My customer, using a UCC28056and wanted to know what is the meaning/declaration of Delta_ONDCH to calculate T_ON in Equation 8 on page 17 of the datasheet. Another question about the G_FFx parameter in page …

  • 2 months ago
  • Power management
  • Power management forum

• UCC28056: Flow soldering

  

  user3266596

  TI Thinks Resolved

  Part Number: UCC28056 Hello, I have a quick question regarding the package. Can the UCC28056 accept flow soldering? T.Oki

  • 2 months ago
  • Power management
  • Power management forum

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