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…
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…
Hi Xiaobo,
Please share the schematic to understand the circuit.
Also, it would be better if you can fill the excel tool LM5160DNTFBK-CALC Calculation tool | TI.com [select flybuck] with your operating conditions and share with us.
Regards
Ar…
Hi Chase,
The combination of iL_pri and iL_sec is feasible till the net peak current through the inductor is within the HS current limit of the device. This depend on transformer ratio, frequency and combination of load currents/
We have Excel tool…
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…
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
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…
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…
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.
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…
