• LM5160DNTFBK-CALC: Correct reference for ripple injection voltage

  

  Satoshi

  TI Thinks Resolved

  Part Number: LM5160DNTFBK-CALC Other Parts Discussed in Thread: LM5160A About newly design for LM5160A, would you let me know about calculation method for ripple injection circuit below; ①Datasheet equation is based on ripple injection voltage: 25mV,…

  • 1 month ago
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Answered

• LM5160DNTFBK-CALC: Maximum Recommended value for Rr

  

  K. Sasaki14

  Resolved

  Part Number: LM5160DNTFBK-CALC I think "Maximum Recommended Value for Rr" is calculated so that injection level becomes 50mV. I heard injection level should be 20mV to 50mV. Injection level decreases as Rr value increases. So I think this "Maximum…

  • Resolved

  • over 3 years ago
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• RE: LM5160DNTBK-CALC: Help to review the schematic design of LM5160DNTBK-CALC and give some suggestions

  

  Hongjia-Wu

  Hi, From the schematic you showed, the transformer ratio is 2:1 and you want both Vpri and Vsec to be 12V which conflicts. Please confirm and send us a complete flybuck calculation tool and we can check the settings accordingly. https://www.ti.com/tool/LM5160DNTFBK…

  • 4 months ago
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• RE: control issues with LM5160QPWPQ1

  

  Andrew Kutzler

  Hi Lior, Could you fill out the quickstart calculator tool? https://www.ti.com/tool/LM5160DNTFBK-CALC#downloads Also if you have any waveforms you would like to show me, then that would be useful. Thanks Andrew

  • over 1 year ago
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• RE: LM5160: LM5160 Load Regulation Simulation Difficulties

  

  Marshall_Beck

  Resolved

  Hello, It would be better to visualize all of your design parameters with you populating them into the flybuck calculator for this IC. The calculator performs the same calculations you have already done and comes up with component values. My hope is we…

  • over 2 years ago
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• RE: LM5160: Output voltage as LM5160 is unstable

  

  Iven Su

  Resolved

  Hi, It looks the switching frequency is 800kHz, it's a bit high, please re-design component values with LM5160 calculation tool (see below link) and choose an inductor with lower leakage inductance, thanks. https://www.ti.com/tool/LM5160DNTFBK-CA…

  • over 3 years ago
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• RE: LM5160DNTFBKEVM: OCP

  

  Ankit Gupta95

  Hello Jamie, Can you please complete the LM5160 Fly-Buck QuickStart Calculator tool, which can be found in the product folder. And can you please send your waveforms and schematics with component ratings. https://www.ti.com/tool/LM5160DNTFBK-CALC Best…

  • over 3 years ago
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• RE: WEBENCH® Tools/LM5160A: LM5160 PROBLEM

  

  Iven Su

  Hi, Because fly-buck is a primary feedback topology, the output voltage will be changed by you diode and path resistor. So please change D1 to another diode with lower forward conduction voltage drop. You can also use the excel tool to calculate component…

  • over 3 years ago
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• RE: LM5160: +/-15V

  

  Andy Chen

  Hi Kai, Pls download LM5160 Flybuck Calculator on TI website: http://www.ti.com/tool/lm5160dntfbk-calc LM5160 can support your application per the calculation result.

  • over 3 years ago
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• RE: LM5160: LM5160A CCM mode setting problem

  

  Arief Hernadi

  Hi, This looks like some kind of instability. Do you use the same value as webench recommend on R50 and C37? You can also check the ripple injection circuit value here http://www.ti.com/tool/lm5160dntfbk-calc You can maybe try to lower the R50 and see…

  • over 3 years ago
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