Answered

• UC3842: Slope Compensation

  

  J

  Resolved

  Part Number: UC3842 Other Parts Discussed in Thread: UCC28C42 , How to understand the slop compensation circuit , I know the peak current mode control but I can't understand how to generate the triangle wave use BJT

  • Resolved

  • over 5 years ago
  • Power management
  • Power management forum
Answered

• UC3842: Design Tool

  

  Kuan Wei Chen (Kevin Chen)

  Resolved

  Part Number: UC3842 Dear Team, Here is Kevin from Delta Taiwan. Do we have excel tool or mahcad for UC3842 can help customer expedite the design? BR Kevin

  • Resolved

  • over 5 years ago
  • Power management
  • Power management forum
Answered

• UC3842: Oscillator charging ramp equations

  

  J

  Resolved

  Part Number: UC3842 I think the oscillator charging ramp equations is wrong the Ichg is time variant is not a constant how do the datasheet can get the delta Vosc can someone writhe more detail this data is hard to read. I want to know how to calcula…

  • Resolved

  • over 5 years ago
  • Power management
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• UC3842: Recommended Voltage mode controller

  

  Kuan Wei Chen (Kevin Chen)

  TI Thinks Resolved

  Part Number: UC3842 Other Parts Discussed in Thread: LM5025 Dear Team, Here is Kevin from Delta Taiwan. Customer is using UC3842 as current mode controller. If customer want voltage mode controller, which one will you suggest? BR Kevin

  • over 5 years ago
  • Power management
  • Power management forum
Answered

• UC3842: Noise on RtCt pin

  

  Atul Bhakay1

  Resolved

  Part Number: UC3842 Hi I have built a power supply circuit using UC3842 . Input of power supply is 20VDC to 70VDC and Output : a) 5V/0.3A (GND 1) b) 24V / 0.2A and 5V / 0.2A (GND 2) c) 24V / 0.2A and 5V / 0.2A (GND 3) The power supply s functioning…

  • Resolved

  • over 5 years ago
  • Power management
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Answered

• UC3842: Transfer Function Solved

  

  Werner Verschuur

  Resolved

  Part Number: UC3842 Hi I finally managed to allocate much needed time to Transfer Functions and resolve my original post "UC3842 Transfer Function" in February 2020 The short answer to solving the problem using Plant Transfer function to plot Gain…

  • Resolved

  • over 5 years ago
  • Power management
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Answered

• RE: UC3842: UC3842

  

  John Stevens

  Resolved

  Kawesa Thanks for your interest in TI. What is your input voltage range, output voltage, and output current maximum? You can also search for reference designs at Ti.com/powerlab in the meantime. Or you can use the Webench tool at TI.com/Webench…

  • over 8 years ago
  • Power management
  • Power management forum
Answered

• RE: WEBENCH® Tools/UC3842: Suggestion for Battery Charger Design

  

  Ajith Prabhakar

  Resolved

  Hi Colin, Thanksfor your answers. Regards Delphin

  • over 5 years ago
  • Power management
  • Power management forum
Answered

• UC3842: About the switch frequency

  

  aggil liang

  Resolved

  Part Number: UC3842 Hi We use UC3842D8 to design a 60W/（15V output） power supply. We design the switch frequency is about 100K, but when we test (only 15V output is loaded),the frequency is 20~30Khz, especially 3kHz with no load. Below is the schematic…

  • Resolved

  • over 6 years ago
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• UC3842: Input undervoltage and overvoltage protection

  

  Xiaobing (Eric)

  TI Thinks Resolved

  Part Number: UC3842 Other Parts Discussed in Thread: UCC24630 , LM2903 , LM8364 Hi Team, Can I have some classical schematic suggestion for input under/over voltage protection based on UC3842? Tks a lot. BR, Xiaobing (Eric)

  • over 6 years ago
  • Power management
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