• 

  Reagan Li

  • 2 months ago
  • Power management
  • Power management forum

  TPS53311: TPS53311 unused SYNC pin

  • Resolved

  Part Number: TPS53311 Hi team, How to deal with the unused SYNC pin of TPS53311 ? Thanks! Reagan
• 

  Jim Tsai

  • 2 months ago
  • Power management
  • Power management forum

  TPS53311: fsw abnormal

  TI Thinks Resolved

  Part Number: TPS53311 Hi, The PS pin is floating forced CCM mode. The fsw should be 1.1Mhz but I measured 600khz only. Please check attached schematic, thanks.
• 

  Weidong Zhu

  • 4 days ago
  • Power management
  • Power management forum

  RE: UCD74120: Generating CVDD of 1.1V for higher currents

  Hi Binayak, Please see below my answers to your questions: (1): UCD74120 is a power stage. The output voltage is controlled by UCD9244. Please find the below equation in UCD9244 datasheet (page 14) on how to set output voltage, where Vref_cmd is the...
• 

  sah yonghan

  • over 9 years ago
  • Simulation, hardware & system design tools
  • Simulation, hardware & system design tools forum

  TPS54617

  • Resolved

  of tps54617, F(switching)=1.6Mhz. while applying the formula from TPS53311 , I(ripple)=1/(LXSWITCHING FREQUENCY
• 

  David Robinson

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

  RE: TPS40200 Must keep output switching off using SS Pin until 30 VDC input is available

  Hello Anthony, Please provide the updated TPS40KType spreadsheet that you used prior to making the last recommendations for the compensation network values. Please see attached. David Robinson

  • TPS40KType III Loop Stability kVenable_sluc263c_DGR.xlsx
• 

  John Bottrill

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

  RE: UCC3806 reference design and simulation model

  Hello, The UCC3806 is a dual output controller though it can be used in a flyback where only one of the outputs are used to drive the switch it might be better to choose a single output controller. Look at page 46 of the attached under General Purpose...

  • Power management guide 2011.pdf
• 

  John Bottrill

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

  RE: Low operating voltage version of a TL494?

  Mark, see teh attached Power Management Guide Page 43 John

  • Power management guide 2011.pdf
• 

  John Bottrill

  • over 9 years ago
  • Power management
  • Power management forum

  Re: Kindly, suggest me the controller for isolated DC/DC

  Peter, i am enclosing the Power Management Guide for 2011. The section you will be interested in starts on page 43 and actual devices listed on page 46, With the minimum information you have given me I would expect that you will want something like...

  • Power management guide 2011.pdf
• 

  John Bottrill

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

  RE: How to adjust output PWM of UC3825

  Siyu, I think the toggle flip-flop in the block diagram on page one of the spec should have let you know that the max you will get with this device is 50% duty. Go to page 43 and 44 of the attached and select a more suitable part.

  • Power management guide 2011.pdf
• 

  John Bottrill

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

  RE: PWM chip selection

  Hi, I've attached the 2013 User's Guide for power products. Starting on page 53 you will find a selection of PWM controllers. many of these teh frequency can be varied according to external criteria. As an example if you use a UC3842 it is...

  • 2013 Power Management Guide.pdf

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