• UC2825: UC2825 question

  

  Masazumi Ishii

  TI Thinks Resolved

  Part Number: UC2825 hello. I have a question about UC2825. ①UC2825DW About TJ of UC 2825 DW Please let me know Tj (MAX). The maximum value of Tj is not indicated in the data sheet. Ta = max: 85℃ Power Dissipation = 1 W θja = 50 ℃ / W From this, I understand…

  • over 6 years ago
  • Power management
  • Power management forum
Answered

• UC2825: PWM IC going to shutdown mode

  

  Nesh Johny

  Resolved

  Part Number: UC2825 Dear SIr, UC2825 is used as PWM controller for forward converter in my board with 100kHz and another driver IC is used for driving the MOSFET, (PWM signal only taken from UC2825). once the board reaches 65 degree the converter goes…

  • Resolved

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

• UC2825: Idea for disable setting

  

  Satoshi

  TI Thinks Resolved

  Part Number: UC2825 I need to add disable circuit for UC2825(Push-pull) due to measure abnormal prevention. I think that UC2825's CT pin left short by external circuit, UC2825 will be disable. (oscillation will stop) Is this idea no problem? If there…

  • over 6 years ago
  • Power management
  • Power management forum

• RE: UC2825: About UC2825

  

  takahiko yokota

  Hi Ben-san Thank you for the reply. Is UC2825 designed to start switching when the SS terminal voltage is 1.25 V or higher? Best regards, Yokota

  • over 7 years ago
  • Power management
  • Power management forum

• UC2825: Start up of UC2825

  

  takahiko yokota

  TI Thinks Resolved

  Part Number: UC2825 2Hi Please let me ask you three questions about UC2895. 1.What is the voltage of soft start terminal when the switching starts? 2.What is the voltage of soft start terminal when Vout is set the volatge? 3. How many seconds does the…

  • over 7 years ago
  • Power management
  • Power management forum

• TINA/Spice/UC2825: Reg: Technical support for UC2825 PWM IC

  

  Kali Dasan

  TI Thinks Resolved

  Part Number: UC2825 Other Parts Discussed in Thread: TINA-TI , Tool/software: TINA-TI or Spice Models Dear Technical Team , I am developing the test program using following procedure for UC2825 PWM device. Reference section:- Expected Reference output …

  • over 7 years ago
  • Simulation, hardware & system design tools
  • Simulation, hardware & system design tools forum

• UC2825: Setting the frequency value of UC2825

  

  takahiko yokota

  Part Number: UC2825 Hi My customer will set the Freq=130kHz(Rt=7.5kHz, Ct=2200pF). Please let me confrim the attached figure just to be sure. ① Is this the range of Rt? ②,③ Could you tell these value(②=5kΩ, ③=500Hz)? UC2825.pdf Best regards, Yok…

  • over 7 years ago
  • Power management
  • Power management forum

• UC2825: UC2825 Design Example Issue

  

  AJEET KUMAR IIST

  TI Thinks Resolved

  Part Number: UC2825 Hi, We have found a problem in UC2825 Design Example. As it is feedback signal and going to Inverting input of the IC. The picture is attached. Regards Ajeet

  • over 7 years ago
  • Power management
  • Power management forum

• UC28025: Difference from UC2825

  

  Masazumi Ishii

  TI Thinks Resolved

  Part Number: UC28025 Other Parts Discussed in Thread: UC2825 Hello. We are considering changing from UC2825 to UC28025. 元の訳を表示 I have a question about UC28025. For details, please see the attachment. Thank you. UC2825 vs UC28025.pdf

  • over 6 years ago
  • Power management
  • Power management forum

• UC2825: UC2825DW Thermal parameters

  

  Masazumi Ishii

  TI Thinks Resolved

  Part Number: UC2825 Hello. I have a question about UCC 2825 DW. I want to obtain the junction temperature from the IC body temperature and power consumption. I think that there is a method to obtain by the parameter of Ψjt. What is Ψjt? When junction…

  • over 6 years ago
  • Power management
  • Power management forum

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