Answered

• UCC2895: UCC2895 soft-start function

  

  akira matsumoto

  Resolved

  Part Number: UCC2895 Please tell me about the soft start function of the UCC2895. Item 1. What is the SS pin(19pin) voltage at the end of the soft-start period? Equation (111) in the datasheet (Rev. Q) appears to indicate 3.6V, but this is not specified…

  • Resolved

  • 5 months ago
  • Power management
  • Power management forum

• UCC2895: Shoot-Through Issue with OUTA/OUTB on UCC2895

  

  Conor

  TI Thinks Resolved

  Part Number: UCC2895 Tool/software: Hi, We are currently evaluating the UCC2895 in a prototype phase-shifted full-bridge power supply circuit. During testing under light or no-load conditions, we have observed an issue where the MOSFETs connected…

  • 8 months ago
  • Power management
  • Power management forum

• UCC2895: ZVS IS NOT WORKING

  

  naresh sattula

  TI Thinks Resolved

  Part Number: UCC2895 Dear Team, I am currently developing a 3.3 kW charger using a PSFB topology for the DC-DC section. At present, I am unable to achieve ZVS. I have tried modifying the leakage inductance, shim value, and magnetizing inductance;…

  • 1 month ago
  • Power management
  • Power management forum
Answered

• UCC2895: Overcurrent protection calculation

  

  user5303116

  Resolved

  Part Number: UCC2895 How do I calculate the overcurrent protection when connecting the RAMP and CS terminals with a resistor, as shown in Figure 18 of the datasheet? The Current Sense Network section does not include RSLC in the calculation. Is it okay…

  • Resolved

  • 6 months ago
  • Power management
  • Power management forum

• UCC2895: Start-Up Gate Output Sequence

  

  akira matsumoto

  TI Thinks Resolved

  Part Number: UCC2895 When voltage is applied to the VDD pin of the UCC2895 and operation begins, in what order do the output pins (OUTA, B, C, D) start to change? Initially, all output pins start at Low. Which pin becomes High first?

  • 4 months ago
  • Power management
  • Power management forum

• UCC2895-EP: LTSPICE Simulation model for UCC2895MDWREP

  

  Siddhartha Singh

  TI Thinks Resolved

  Part Number: UCC2895-EP Other Parts Discussed in Thread: UCC28950 , UCC2895 Hello, Can you share the LTspice simulation model for the UCC2895MDWREP? Also, do you have a working LTspice demo circuit for a full bridge phase shifted topology using the…

  • 3 months ago
  • Simulation, hardware & system design tools
  • Simulation, hardware & system design tools forum
Answered

• UCC2895: Voltage mode operation

  

  user5303116

  Resolved

  Part Number: UCC2895 Other Parts Discussed in Thread: UCC3895 , Tool/software: Hello. In datasheet 7.4, it says that when the RAMP and CS terminals are connected, the UCC3895 operates in voltage mode. Does this also apply to the UCC2895? Thank…

  • Resolved

  • over 1 year ago
  • Power management
  • Power management forum

• UCC2895: Voltage spike issue

  

  keviv

  TI Thinks Resolved

  Part Number: UCC2895 Tool/software: Hi Mike, Is it possible to reduce voltage issue using planar transformer.? Thanks Keviv

  • over 1 year ago
  • Power management
  • Power management forum

• UCC2895: 10kW PSFB design

  

  keviv

  TI Thinks Resolved

  Part Number: UCC2895 Tool/software: Hi, We are working on a 10kW PSFB design based on UCC2895 .We are observing a ringing and voltage spike >1kV at the secondary side even at low input voltage. Our output voltage requirement is to get 200V-1000V …

  • over 1 year ago
  • Power management
  • Power management forum

• UCC2895: PSFB detailed analysis

  

  keviv

  TI Thinks Resolved

  Part Number: UCC2895 Tool/software: Hi Mike, is there any application notes/articles covering the detailed mathematical derivation of the PSFB converter topology. can you please share. Thanks Keviv

  • over 1 year ago
  • Power management
  • Power management forum

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