• UC3842: Inquiry for Figure 25

  

  Renan Santos Adriano

  TI Thinks Resolved

  Part Number: UC3842 Hello Team, My customer would like to ask what type of transformer is used in Figure 25. Also, if we have the cross-section of the coils, and both primary and secondary side wire cross-sections. Regards, Renan

  • over 3 years ago
  • Power management
  • Power management forum

• UCC28180: Ucc28180 startup issue

  

  Jiahui Gao

  TI Thinks Resolved

  Part Number: UCC28180 Other Parts Discussed in Thread: UC3842 Tool/software: Hi team， I am currently developing a boost PFC+flyback switching power supply. The PFC chip uses UCC28180, and the flyback uses UC3842. 1. The power supply for UCC28180 uses…

  • 3 months ago
  • Power management
  • Power management forum
Answered

• UC3842: Synchronization

  

  J

  Resolved

  Part Number: UC3842 In the UC3842 datasheet what is the synchronization function , I can't understand the word, Can somebody make a easy example to explain this to me?

  • Resolved

  • over 4 years ago
  • Power management
  • Power management forum

• UC3842: UC3842 Transfer Function

  

  Werner Verschuur

  Part Number: UC3842 Hi, I need help converting a UC3842 in Flyback application Transfer Function from Plant H(s) and Closed Loop G(s) to h(t) and g(t) to do Bode Plots of Gain and determine crossover frequency. H(s) = Fgo*(1 + (s/Wesrz)) * (1 - (s/Wrhpz…

  • over 4 years ago
  • Power management
  • Power management forum
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 4 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 calculate…

  • Resolved

  • over 4 years ago
  • Power management
  • Power management forum

• 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 4 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 4 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 satisfactorily…

  • Resolved

  • over 4 years ago
  • Power management
  • Power management forum

• UC2842: How to determine the value of the input capacitance of the flyback power supply？

  

  xiao.pan

  TI Thinks Resolved

  Part Number: UC2842 Other Parts Discussed in Thread: UC3842 Tool/software: Dear experts， The flyback power supply input voltage is 24VDC ,Vout=16V and the input capacitor is 9 x 10uF MLCCs in parallel. When the flyback power supply is loaded with…

  • 4 months ago
  • Power management
  • Power management forum

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