LM5116: Power Factor & THD improvement

Usman Haider

Part Number: LM5116

I have designed a 24V DC power supply circuit using LM5116 but the power factor of the above circuit is very very low (approx. 0.36) and there are much distortions in the circuit as shown below.

Please help me improving the power factor of the circuit and removing THD factor from the output waveform.

over 3 years ago

0 Usman Haider over 3 years ago

Prodigy 165 points

6864.ONLY FYP - autosave 22-11-23 14_16.TSC

0 Usman Haider over 3 years ago in reply to Usman Haider

Prodigy 165 points

0 Usman Haider over 3 years ago in reply to Usman Haider

Prodigy 165 points

Please make some appropriate changes in the circuit so that I may have power factor of 0.9.

+1 EricLee over 3 years ago in reply to Usman Haider

TI__Guru 68581 points

Hello Usman

You may have to add PFC circuit to improve THD, Please refer https://training.ti.com/power-factor-correction-pfc-circuit-basics

- Eric Lee

0 Usman Haider over 3 years ago in reply to EricLee

Prodigy 165 points

Hi Eric

I have checked this web page but I didn't find any circuit that could solve my problem.

Could you please recommend me a circuit that could solve my problem. I mean that can improve my power factor.

I hope you will understand, what am I trying to say.

0 EricLee over 3 years ago in reply to Usman Haider

TI__Guru 68581 points

Hello Usman

Please check the module4. PFC Circuit Basics: The CCM Boost Converter. You will be able to see PFC circuit with bridge diodes.

- Eric Lee

0 Usman Haider over 3 years ago

Prodigy 165 points

Is there any way that I can implement this circuit in Webench tool so as to analyze THD Power factor.

0 EricLee over 3 years ago in reply to Usman Haider

TI__Guru 68581 points

Hello Usman
Thanks for choosing TI.
- Eric Lee

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LM5116: Power Factor & THD improvement