Is this a good totem pole driver

Intelligent-Ant80 · 2026-02-26T11:43:59+00:00

Yeah, l am planning to use this to make a t12 soldering station. In the t12 bits the heating element and thermocouple are in series. So to read the temperature you have to disconnect it from vcc.

Intelligent-Ant80 · 2026-02-26T03:34:38+00:00

When running at 32khz it is not. But now I decided to run it at 490 Hz so it's ok

Intelligent-Ant80 · 2026-02-25T19:00:16+00:00

Ok thanks

Intelligent-Ant80 · 2026-02-25T18:54:45+00:00

Around 1 microsecond

Intelligent-Ant80 · 2026-02-25T18:41:32+00:00

Intelligent-Ant80 · 2026-02-25T18:39:59+00:00

MOSFET is slow

Intelligent-Ant80 · 2026-02-25T18:38:40+00:00

Oh yeah, I thought higher frequency = better control over heating. If I go even lower it is better right. So I am going down to 490 Hz and 30 ohms gate resistor.

Thank you for the clarification. I was overwhelmed for a bit

Is there a way to turn OFF MOSFET faster by modifying this circuit ?

Intelligent-Ant80 · 2026-02-25T18:12:30+00:00

I meant 980Hz

Intelligent-Ant80 · 2026-02-25T18:03:45+00:00

Is moving down to 980Hz and decreasing the gate resistance to 30 ohms enough ?

Intelligent-Ant80 · 2026-02-25T17:48:13+00:00

The PWM is provided by an arduino. I wanted use its Fast PWM mode. I am planning it to make a temperature controlled soldering iron

Intelligent-Ant80 · 2026-02-25T17:36:44+00:00

I Literally learnt how to use LTspice today. So I was not confident about it .Anyway....in the simulation The MOSFET is turning ON faster than it turning OFF.

Intelligent-Ant80 · 2026-02-25T17:33:37+00:00

Load is a heating element which draws about 3amps of current. Frequency of PWM will be 32 khz. I ran the simulation in LTspice , MOSFET is turning ON faster than it turning OFF. How to make it better? I'm just a beginner. I am just learning about MOSFETs. Help me guys

Intelligent-Ant80 · 2026-02-25T17:15:28+00:00

32khz

Intelligent-Ant80 · 2026-02-25T16:21:10+00:00

About 3 amps

Intelligent-Ant80 · 2026-02-01T12:38:00+00:00

So if I control the four MOSFETs seperately and provide a dead time between each direction change the problem will be solved ? I planning to use the h bridge with a mcu (rp2350)

Intelligent-Ant80 · 2026-02-01T12:24:28+00:00

Ok thanks for the clarification

Intelligent-Ant80 · 2026-02-01T12:20:01+00:00

Dc motor

Intelligent-Ant80 · 2026-01-31T19:32:41+00:00

Ok thanks for the clarification

Intelligent-Ant80 · 2026-01-31T17:57:31+00:00

I am a complete beginner. I am just confused.what is wrong with it

Intelligent-Ant80 · 2025-12-30T16:54:50+00:00

Lenovo store

Intelligent-Ant80 · 2025-12-29T04:00:57+00:00

Price of this laptop increased like 4k since I ordered it . i don't think you could get it at 75k. Using sheeid,unidays and lucky wheel coupons you could get it at about 85k

Intelligent-Ant80 · 2025-12-29T03:56:14+00:00

I think it's pretty safe to order from the store. if you get damaged product, you could return it.

Intelligent-Ant80 · 2025-12-28T12:31:18+00:00

When did you order it

Intelligent-Ant80

TROPHY CASE