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  Nesh Johny

  • 26 days ago
  • Power management
  • Power management forum

  LM5116: Start-Up LO and HO Gate pulse

  TI Thinks Resolved

  Part Number: LM5116 Hi Sir, During Soft-start (Turn-On with EN pin of LM5116). Initially IC will give the High side gate pulse and low side gate pulse will be in diode emulation mode, then Low side gate pulses will come(for output capacitor charging...
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  Jiawei Hu1

  • 7 days ago
  • Power management
  • Power management forum

  LM5116: LM5116 does not work normally when it is just powered on

  Part Number: LM5116 Dear team, My customer is using LM5116 in a 48 Vin, 12 Vout buck circuit, but now they found 2% ratio board damage issue in their end customer. The phenomenon that the my customer reproduced is when first powered on, the drive...
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  Nesh Johny

  • 29 days ago
  • Power management
  • Power management forum

  LM5116: UVLO Capacitor Discharge

  TI Thinks Resolved

  Part Number: LM5116 Hi, Could you please explain how the additional D2 will help in discharge of C FT function during under-voltage condition, considering I have kept the divider point to reach below 1.2V at input voltage of 40V. without D2 also the...
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  Marshall_Beck

  • 18 hours ago
  • Power management
  • Power management forum

  RE: LM5116: CSG, DEMB layout question

  Minimal routing should be performed on these traces, as noise on these signals can causes issues for regulation. As always, EVM is a good starting point for identifying preferred layout practices www.ti.com/.../snva285a.pdf
• 

  Hollis Liu

  • 1 month ago
  • Power management
  • Power management forum

  LM5116: LM5116 equation 35 & 37

  TI Thinks Resolved

  Part Number: LM5116 Hi Team, My customer has some questions about LM5116 and they would like to know why does the Vout range affect the Rs calculation equation, comparing equation 33 & 35 & 37. what's the Rs equation when...
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  Naman Vaidya1

  • 8 days ago
  • Power management
  • Power management forum

  RE: LM5116: LM5116 Blowing up Capacitor and not giving me required Voltage

  Thanks a lot this is very helpful. Naman
• 

  Nesh Johny

  • 1 month ago
  • Power management
  • Power management forum

  LM5116: Enable Pin : Transition Time Importance in Operation

  TI Thinks Resolved

  Part Number: LM5116 Hi, Could you please let me know the importance or chances of failures due to slower transition enable signal with more than 1 switching period time. As per datasheet it is a must requirement. Can it lead to MOSFET failures...
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  Daniel Li14

  • 18 days ago
  • Power management
  • Power management forum

  RE: WEBENCH® Tools/LM5116: Ouput Oscillation issue with LM5116MHX

  Hi I think it is because sensing the zero current can't be very accurate . sothere is some negative current when turn off the low side fet, the Vo will drop cycle by cyel then the duty will try to increase make the Vo raise up again . then it go...
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  Kuan Wei Chen (Kevin Chen)

  • 22 days ago
  • Power management
  • Power management forum

  LM5116: High Vin and Vo solution

  Part Number: LM5116 Dear Team, Here is Kevin from Delta Taiwan. My customer is looking for solution for non-isolated buck: Vin 400~840V Vo 240V Io 0.3A Not sure do we have suitable buck controller can work here? It should be acceptable if...
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  Daniel Li14

  • 15 days ago
  • Power management
  • Power management forum

  RE: LM5116: Wave of PIN SW

  Hi I think it is normal status if you Vout is stable. I put a high side turn on with red circuit., when dcdc work at no load, it will have puls skip like 2nd and 3th circuit is 1/2 fsw. because you use large inductor(I guess), after high side turn...

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