• 

  Peter Meaney

  • 2 months ago
  • Power management
  • Power management forum

  RE: UCC2808-2: Wrong information in UCC2808 PDF?

  Hi Choi, Thanks for bringing this to our attention. The last line in the table should be UCC2808A-2. We will add this to the documentation queue to update the datasheet. Regards Peter
• 

  Satoshi

  • over 2 years ago
  • Power management
  • Power management forum

  UCC2808A-2: Power Dissipation Calculation

  TI Thinks Resolved

  Part Number: UCC2808A-2 Please let me know about how to calculate power dissipation for UCC2808A-2 or the other Push-Pull PWM. If there better that available application note or calculation tool. Best regards, Satoshi
• 

  Teng Feng

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

  RE: UCC28C41-Q1: dc-dc

  Hello, For your requested power spec, push-pull converter is recommended, you can choose IC controller UCC2808A-2. Regards, Teng
• 

  John Griffin1

  • 11 months ago
  • Power management
  • Power management forum

  RE: LM5030: LM5030 push pull step up

  Hello Watchaphong, You could use the LM5030 for such an application however 100kHz is below the minimum operating oscillator frequency of the ic. You should consider using the UCC2808A-1 or the UCC2808A-2 which is another push pull controller and...
• 

  user3812683

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

  UCC2808A-2: UCC2808A-2 error amplifier open loop gain test

  Part Number: UCC2808A-2 Hi, My problem is ucc2808a2's error amplifier open loop gain test. Somewhere between 0.35 and 1.2 volts on the COMP pin. you will start to get pulses. at the comp voltage increases the pulse widths will get larger. Beacuse...
• 

  Wangxin Huang

  • over 2 years ago
  • Power management
  • Power management forum

  RE: UCC2808-2: Repeated fault analysis

  Hi Alon, It meant ambient temp rather than junction temp. 87C Ambient temp exceed max recommended operating range of UCC2808-2. Can you lower the ambient temp to see where the part starts switching? For the UCC2808A-2Q1, I compared it against UCC2808A...
• 

  Hirotsugu Kobayashi

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

  UCC2808A-1: UCC2808A Wide Input Range

  • Resolved

  Part Number: UCC2808A -1 Is it possible to achieve a circuit of Fig. 2 of ucc2808 data seat
• 

  Douglas Mitchell92

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

  RE: SG3524: Having issues achieving max PWM

  Hi John, Thanks for the valuable info. We purchased some UCC2808A-1 chips and it made a great improvement. It still looks like the waveform is a bit asymetrical (looks like about .2 usec at 200khz) but it could be my imagination. Is there anyway to make...
• 

  Atsushi Yamauchi

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

  Questions of UCC2808A-1(stability, snubber circuit)

  I have quetions of UCC2808A-1. 1. stability I think UCC2808A-1 is the voltage control by the width of ON time. Is this correct? If it is correct, I think it is difficult to keep the stability of the wave shape, when the load is light and the dead...
• 

  John Bottrill

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

  RE: UCC2808A External Sync

  Nate, To synchronize the UCC2808A you will need to drive the RC pin voltage to exceed the VDD/2 threshold of the comparator (see page 5 of the spec) you will only want it there for a a few hundred ns. Look at the free running clock waveform and make...

  • Sync diagram.pdf

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