LM5030 model for simulation

ORUMELECTRONIC · April 8, 2024, 12:36pm

HI I need lm5030 mode can you help?

ivan1 · April 8, 2024, 4:38pm

Just change name from LM5030.lib.txt to LM5030.lib and drag and drop into qspice.

Best regards
Ivan

ORUMELECTRONIC · April 9, 2024, 4:52am

thanks
One question, how to add this to the library model?
And can this be completely simulated for push pull converter circuit?

KSKelvin · April 10, 2024, 12:42am

Mike Engelhardt has a tutorial about “Importing 3rd Party Models into QSPICE”
QSPICE™ Simulator - Qorvo - VIDEOS

I believe what @ivan1 gave you is from TI website, and it is version 1.1 LM5030 model, by unzip snvm017.zip > LM5030_PSPICE > LM5030_PSPICE_031910 > Example > LM5030.lib
https://www.ti.com/product/LM5030#design-tools-simulation

This is a Pspice model and normally can also be used by generic spice simulators including Qspice.
But the example circuit built with LM5030 from TI is only for Pspice and you may have to start from scratch in using it from other spice platform.

ORUMELECTRONIC · April 11, 2024, 4:27am

Thank
the QSPISE It does not have most models of the models for simulation

pc817-tl431-mbr20200- Current transformer
Is my software library not complete?
I need these models can you help me?

KSKelvin · April 11, 2024, 3:14pm

I worked on TL431 and PC817 embedded subckt symbol for Qspice, and you can download from my Github
Qspice/Symbols/MFG at main · KSKelvin-Github/Qspice

Here is a .model for MBR20200CT, you can verify if this model close to datasheet
Index of /Spice_Model_CD/Vendor List/Motorola/Spice/Rectifier/Schottky (ltwiki.org)

afshinquest · April 13, 2024, 8:32am

hi
can you simulation Qspice lm5030 for push pull converter?
please give me all data for this ic.
thank you

macsky · April 13, 2024, 3:58pm

Your question has already been answered above.

Mac

ORUMELECTRONIC · June 25, 2025, 2:27pm

hi i see this link

But I couldn’t MAKE model the MOSFET IRFP150MN FOR QSPISE
Can anyone help or give me a QSpice model?

KSKelvin · June 25, 2025, 11:43pm

Are you refer to IRFP150N?
https://www.infineon.com/cms/en/product/power/mosfet/n-channel/irfp150n/

ORUMELECTRONIC · June 26, 2025, 4:46am

Yes, I need this MOSFET model.

ORUMELECTRONIC · July 14, 2025, 12:29pm

yes i need this model

KSKelvin · July 14, 2025, 3:49pm

Infineon website has .subckt model for IRFP150N.
And I also worked an example to model it with Qspice model generator based on your initial question that you couldn’t make model from Qspice.

irfp150n-Infineon.txt (1.6 KB)
irfp150n-QspiceModelGen.txt (277 Bytes)
tmp73BA.tmp.qsch (5.9 KB)

Here is my input for model generator based on datasheet.
This is just my version, not guarantee I must correct.

ORUMELECTRONIC · July 23, 2025, 10:23am

Thank you for your good guidance.

ORUMELECTRONIC · July 28, 2025, 9:16am

I had the simulation of the push-pull circuit.With LM5030
VIN=21 TO 32V
VO=48V
IO=4A
My circuit is not working properly and the gate waveform is very low
and my output is in the millivolt range
Can someone help?
test push pull - ABv1.qsch (27.3 KB)

bordodynov · July 28, 2025, 11:15am

It is necessary to install the correct capacitor for smooth switching on.

test push pull - ABv4.qsch (31.5 KB)

ORUMELECTRONIC · July 28, 2025, 12:25pm

Thank you.
I have another question.
What happens in the time between1ms to2.1ms?
Voltage waveform V(N07) and V(N02)(Gate-source) voltage It is close to 2 volts.
Is there a problem with the calculations?

bordodynov · July 29, 2025, 5:13am

  + C6.

test push pull - ABv5.qsch (32.2 KB)

bordodynov · July 29, 2025, 9:06am

test push pull - ABv6.qsch (31.9 KB)

ORUMELECTRONIC · July 29, 2025, 12:21pm

Thanks for your good guidance.
The main problem with the circuit was in the feedback.
Can you help me calculate the appropriate feedback values?
In the next part, I plan to convert this circuit into an isolated circuit with TL431 and pc817