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  Aswathy Kanth

  • 22 days ago
  • Power management
  • Power management forum

  LM5022: Ripple with switching frequency in the o/P

  TI Thinks Resolved

  Part Number: LM5022 Hi, I have used TI webench to design a boost converter. Please see the scheme attached. I am getting a ripple of >250mV in my o/p & the frequency of the ripple is same as my switching frequency. What might be reason for...
• 

  Roy Chou1

  • 1 month ago
  • Power management
  • Power management forum

  LM5022: FB pin voltage drift by Temp

  TI Thinks Resolved

  Part Number: LM5022 Hi Team, I see the figure.2 in datasheet. it shows that FB voltage will drift due to temp. In figure, 25C = 1.25V ; -25C = 1.248 , it's only 1.25-1.248 = 0.002V Could you let me know whether we have this drift voltage spec...
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  Sarumathi R

  • 1 month ago
  • Power management
  • Power management forum

  LM5022: Transformer Pin Number

  • Resolved

  Part Number: LM5022 Hi Team, I have found one reference design in TI webench which satisfies our
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  Ye Zhao1

  • 2 months ago
  • Power management
  • Power management forum

  LM5022: Datasheet LM5022 loop compensation

  • Resolved

  Part Number: LM5022 On page 24 of the datasheet of LM5022 , it shows some steps to do the loop
• 

  Jason Fan

  • 1 month ago
  • Power management
  • Power management forum

  LM5022: What's the behavior if leave the CS pin floating

  Part Number: LM5022 Hi Experts: Customer is doing the failure analysis , we would like to know the behavior if leaving the CS pin floating , how does the LM5022 operate in this scenario. Thanks!
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  Tsvetan Ginin

  • 3 months ago
  • Power management
  • Power management forum

  LM5022: LM5022 - Unregulated DC-DC flyback output voltage

  Part Number: LM5022 Hello, What could cause in the attached DC-DC flyback design the inability to regulate the output voltage from the LM5022 controller? At an input voltage from 12 volts, the value of the isolated output is 5.4 volts(12V normal), and...
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  Jan Seidel1

  • 4 months ago
  • Power management
  • Power management forum

  LM5022: Isolated Flyback - Additional Output on Primary Side

  • Resolved

  Part Number: LM5022 Hi, I am currently working on an isolated flyback converter design Vin: typ
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  Richard Fu22

  • 3 months ago
  • Power management
  • Power management forum

  RE: LM5022: Vout drop when increasing the load

  Hi Tess, Thank you for sharing the images. It looks like your COMP pin is hitting the open circuit voltage, which can happen if FB is low. Can you increase your output capacitance and see if fixes the issue? It is possible that at higher loads, your...
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  Richard Fu22

  • 3 months ago
  • Power management
  • Power management forum

  RE: WEBENCH® Tools/LM5022: Webench Design says IC or FET may cross junction temperature- Should I use this design?

  Hi Ankit, In Webench, the thermal simulations assume natural convection and no airflow, and utilizes Theta_ja in calculations. Therefore, the situation that Webench shows you will not take into account your actions to reduce junction temperature increase...
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  Praveen Badiger

  • 4 months ago
  • Simulation, hardware & system design tools
  • Simulation, hardware & system design tools forum

  RE: WEBENCH® Tools/LM5022: Over current sensing does not shutdown

  Hi Lily, The current sensing resistor RSNS & RS2 is used for steady-state regulation of the inductor current and to sense overcurrent conditions. The device uses the cycle by cycle current limit. If the current limit is hit, the High side FET is...

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