Answered

• PMP11329: Loop oscillations- LM5021-1

  

  Saravanan S

  Resolved

  Part Number: PMP11329 Other Parts Discussed in Thread: LM5021 , UC3844 Hello, I'm using the TI reference design PMP11329 for one of my power supply design with the output of 18V, 3.6A. I'm able to get till 2A of output but the drain waveform oscillates…

  • Resolved

  • over 2 years ago
  • Simulation, hardware & system design tools
  • Simulation, hardware & system design tools forum
Answered

• LM5021: LM5021 sync function application problem

  

  Clyde Chang

  Resolved

  Part Number: LM5021 Other Parts Discussed in Thread: TINA-TI LM5021 has RT/SYNC function, and I can't find any application schematics in the datasheet or on TI's website. Can anybody tell me how to find it? Thanks.

  • Resolved

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

• LM5021: Newer Alternative

  

  Darren (FAE)

  Resolved

  Part Number: LM5021 Looking for a newer alternative to the LM5021 to upgrade an existing design. Any recommendations? I saw the LM34966 that looked attractive... The use-case is to DC rectify some three-phase AC voltage to around 280Vdc~680Vdc. Output…

  • Resolved

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

• LM5021: Pulse Filter Time Constant Calculation

  

  Kashyap Koshti

  TI Thinks Resolved

  Part Number: LM5021 in datasheet for the selection of R22, i want to understand whole calculation for how it will give 67 nSec time constant. Thanks in advance.

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

• LM5021: LM5021Current limiting correlation

  

  jeno.zhang

  TI Thinks Resolved

  Part Number: LM5021 hi， When the customer uses LM5021, the output current increases, the CS pin output exceeds 0.5V, and the chip output low voltage. Why is the output voltage not 0? Is it because of periodic current limitation? If yes, what is the…

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

• LM5021: UVLO bypass ckt

  

  Sankalp Gitaje

  TI Thinks Resolved

  Part Number: LM5021 Is there any way to bypass UVLO feature. In our application we need Power supply Turn off and turn on voltage same.

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

• LM5021: Skip cycle bypass

  

  Sankalp Gitaje

  Part Number: LM5021 I want fixed frequency over the load variation from 0 to 1.5A (Bypass skip cycle) . So I added resistor from VCC pin to CS pin as per datasheet Figure 14 Typical Application Circuit and equation (24), R22 resistor is 10Kohm and R21…

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

• LM5021: EMI reduction

  

  Franz Schellhase

  TI Thinks Resolved

  Part Number: LM5021 Hi Team, Could you please do a confidential schematic review for reducing EMI, please? I will send you the schematic and measurements offline on request. Thank you, Franz

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

• LM5021: design help - DC input

  

  Marvin Cantos

  TI Thinks Resolved

  Part Number: LM5021 Other Parts Discussed in Thread: PMP20809 Hi Team, Good day. I am posting this inquiry on behalf of our customer. "I am interested in this reference design: PMP20809 and have a question about it. It is designed for AC input voltage…

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

• LM5021: LM5021 Disable

  

  Keith Jenkins

  Resolved

  Part Number: LM5021 We have an application where we would like to disable a converter that uses an LM5021-2 controller, and I was wondering if this disable function could be accomplished by pulling the soft start pin to ground using a small signal MOSFET…

  • Resolved

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

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