• UCC28C55: UCC28C55

  

  Maor Matityahu

  TI Thinks Resolved

  Part Number: UCC28C55 Tool/software: Hello, I am using the UCC28C55 flyback IC. I am working with voltage mode control and with DCM. Do i need to use the slope compensation circuit? Thank you Maor M.

  • 8 months ago
  • Power management
  • Power management forum

• UCC28C55: UCC28C55 for charging application

  

  Wayne Chiu

  TI Thinks Resolved

  Part Number: UCC28C55 Tool/software: Hi Team, Can UCC28C55 achieve below CC/CV for charging application? Or it need additional MCU?

  • 10 months ago
  • Power management
  • Power management forum

• UCC28C55-Q1: regarding UCC28C55-Q1 Vref state during comp pin pull-down

  

  Karthik karri

  TI Thinks Resolved

  Part Number: UCC28C55-Q1 Tool/software: Hi Ti Team, I am using UCC28C55-Q1 in my DC-DC converter. I am using VREF 5V to supply protection circuit of my internal circuit. If i pull-down COMP pin with MOSFET during some fault condition.Still…

  • 6 months ago
  • Power management
  • Power management forum

• UCC28C55-Q1: soft start time of UCC28C55-Q1

  

  Karthik karri

  TI Thinks Resolved

  Part Number: UCC28C55-Q1 Other Parts Discussed in Thread: UC2842 Tool/software: Hi TI team, i am working on UCC28C55-Q1 and I have query regarding how to calculate Rss,Css based on soft start time .It is mentioned in the datasheet as 1mA of the Error…

  • 10 months ago
  • Power management
  • Power management forum

• UCC28C55: Frequency Question

  

  Maor Matityahu

  TI Thinks Resolved

  Part Number: UCC28C55 Tool/software: Hello, I am using the UCC28C55 is. In the RT pin i placed RT=17.4kOhm and CT=1nF. From the graph i should get 100kHz but i get 50kHz. Why is that? Thank you

  • 9 months ago
  • Power management
  • Power management forum

• UCC28C55-Q1: Webench design not starting 28C55 device properly

  

  Steven Pigliavento

  TI Thinks Resolved

  Part Number: UCC28C55-Q1 Other Parts Discussed in Thread: UCC28C55 , Tool/software: I have an isolated 24Vin / 250Vout dc/dc design based on Webench with parameters shown below, and PDF attached. (TI Webench) 24Vin, 250Vout (25W) iso boost converter design…

  • 6 months ago
  • Power management
  • Power management forum
Answered

• UCC28C55-Q1: Isolation Capacitor (Ciso) Purpose in PSR isolated dc dc Flyback Converter

  

  Usama Butt

  Resolved

  Part Number: UCC28C55-Q1 Tool/software: Hi Team, I am designing an isolated DC-DC flyback converter using the UCC28C55-Q1 IC (schematics attached). The Webench Power Designer suggests including an isolation capacitor between the primary and secondary…

  • Resolved

  • 4 months ago
  • Power management
  • Power management forum
Answered

• UCC28C55: Using two isolation regulator for power distribution

  

  Mukesh k

  Resolved

  Part Number: UCC28C55 Tool/software: Hi Team, I would like to know if it is possible to use two isolation regulators on the input side to distribute the regulator load while maintaining the isolation requirements. Thanks, Mukesh

  • Resolved

  • 10 months ago
  • Power management
  • Power management forum
Answered

• UCC28C55-Q1: PSR vs SSR

  

  Jagannathan Rajan

  Resolved

  Part Number: UCC28C55-Q1 Tool/software: Hi. I'm currently looking into UCC28C55-Q1. There are design which use both primary side regulation (PSR) and secondary side regulation (SSR). I know that in PSR the regulation and transient response is worse…

  • Resolved

  • 10 months ago
  • Power management
  • Power management forum

• UCC28C55-Q1: Average spice model for stability simulation in psice

  

  Karthik karri

  TI Thinks Resolved

  Part Number: UCC28C55-Q1 Other Parts Discussed in Thread: UCC28C43 Tool/software: Hi Ti team, i am doing stability simulation for dc-dc converter by using UCC28C55-Q1 controller in PSICE,but only UCC28C55-Q1 transient model is avaliable in the Ti site…

  • 8 months ago
  • Power management
  • Power management forum

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