Bipolar PI design

[Orbit]

You will never be able to match the P and N drive of a half-bridge driver. To get the Rds to match, the PMOS needs to be much larger than the NMOS. Then the parasitic capacitance of the PMOS will be much larger and the damping will be different for the P & N. You can fake it somewhat by adding series resistance or extra capacitance to the FETs.

Series resistance didn't prove to be an ideal solution maybe mosfet capacity!?

[Altra]

You will never be able to match the P and N drive of a half-bridge driver. To get the Rds to match, the PMOS needs to be much larger than the NMOS. Then the parasitic capacitance of the PMOS will be much larger and the damping will be different for the P & N. You can fake it somewhat by adding series resistance or extra capacitance to the FETs.

Very true. You can get close enough to be usable.

[Detectorist#1]

Serious conversation is how the difference in Rds on and Cds between P-ch and N-ch transistors will affect the real work in practice. It is good to make this:
1. Adding of external resistors (this reduce the difference). The resistor in drain of N-ch transistor have to be with higher resistance.
2. Adding of capacitor in parallel to TX coil.
3. Use serially connected fast diodes with very low capacitance in series of the transistors
All these thinks have to seriously reduce imbalance. Maybe some one have possibility to analyze these ideas with good software simulator.

[pechkata]

Serious conversation is how the difference in Rds on and Cds between P-ch and N-ch transistors will affect the real work in practice. It is good to make this:
1. Adding of external resistors (this reduce the difference). The resistor in drain of N-ch transistor have to be with higher resistance.
2. Adding of capacitor in parallel to TX coil.
3. Use serially connected fast diodes with very low capacitance in series of the transistors
All these thinks have to seriously reduce imbalance. Maybe some one have possibility to analyze these ideas with good software simulator.

Hello detector #1
This is taught in first grade.
You're posing like a fairground vendor.

[pechkata]

For the half-sine the TX clocks are identical to the bipolar PI:



For the Impulse waveform the TX clocks are this:

Thanks Carl-NC
Whoever can, helps.

[pechkata]

Greetings to all readers of this forum.

[Detectorist#1]

Hi pechkata,
Тhose who know doubt, those who do not know are certain.

[algan]

Hi, Carl, can you take a look at whether this source code will work correctly for half-sine, I made it for PIC16F18426

[Carl-NC]

Hi, Carl, can you take a look at whether this source code will work correctly for half-sine, I made it for PIC16F18426

It looks like you are creating 10 positive pulses followed by 10 negative pulses. Half-sine recycles energy and requires alternating a single positive pulse with single negative pulse.

[boilcoil]

Maybe so?