LM3421: Spice simulation of Boost Application

Hi Miyoshi,

I will take a look at this.

BTW, what software do you use? Do you use PSPICE-FOR-TI?

Best Regards,

Steven

Hi Steven,

Yes, I use PSPICE for TI.

Many thanks for your support.

Regards,

Hi Miyoshi,

Understood. As this is an old device, it may take me some time to figure out what is happening here. Please expect some delay.

Meanwhile, we have some newer devices that may better suit your application. Could you share with us your spec requirement (like Vin, Vout, Iout, dimming requirement, etc.)? We can talk through e-mail if needed.

Best Regards,

Steven

Hi Steven,

I really appreciate your help.
I'm still in the process of considering, but I assume the following spec:

Vin: 5V
Vout: 30V
Iout: 100-500mA
Dimming ratio: 0-100
Dimming frequency (max): 5kHz

Please respond on the forum.
Once the detailed specifications are finalized I will consult with you again via email.
Thank you for your support.

Regards,

Miyoshi

Hi Miyoshi,

Got it. The spec of our new device matches your requirement and has better performance than LM3421. Do you have an TI FAE contact window? I can send you the promotion slides first.

Meanwhile, I am still trying to figure out what's happening in your simulation. Please give me more time because LM3421 is an old device. Thanks.

Best Regards,

Steven

Dear Steven,

I appreciate your efforts in finding a better performance device.

Could you please provide me with a contact window for TI FAE?
Also, I would appreciate it if you could send me the slides.

Lastly, I wanted to inform you that I will be taking a two-week vacation starting tomorrow, 
so my reply may be delayed.

Thank you for your understanding.

Best regards,

Miyoshi

Hi Miyoshi,

I have sent you a friendship request on this E2E forum with my email address attached. You can send me an email and we can talk about the new product there.

Meanwhile, I will try to find the appropriate TI FAE contact window for you.

BR,

Steven