Frequency generator 50-100kHz IC?

[vasko]

I need IC on 12V to drive two bipolar transistors in push-pull on 50-100kHz with ferrit transformer?

I don't want full smps with feedbacks functionality...something more simple just to drive transistors. Also need schematic? Is it possible to accomplish this with simple 555?

[CanAm Man]

Do you need a sine wave or square wave (switching) output?

What power levels are you attempting to drive, in your push-pull pair?

[vasko]

1. square

2. 30 - 100W

[Aucosticraft]

Check the link. Intersil Corporation

Hope this solves your need

I mean this IC as a building base. you can connect this to any wide band power amplifier.

[vasko]

I don't have +/- 10V voltage. I have 12V only. Also don't need sine or triangle waves.

Something like this,just not 50Hz,but 50-100kHz.

[Mooly]

A problem with such a simple circuit is device conduction overlap or cross conduction as the output devices do not turn off abruptly. In other words both transistors will be on together for a significant time leading to large losses and heat generation. You really need some form of dead zone where both devices are off but that involves extra logic unless you research some off the shelf SMPS drivers.

[vasko]

Is there some simple schematic with TL494?

[Mooly]

To design something like this properly is quite a job... however if you are just experimenting then by all means try something like you have shown.

I wonder whether FET's would work better as switching devices due to the low current drive available from the CMOS oscillator.

Something like this for a full design maybe,
http://www.fairchildsemi.com/ds/KA/KA3525A.pdf

[vasko]

is this the simplest it can be?

[agdr]

Originally Posted by Mooly

I wonder whether FET's would work better as switching devices due to the low current drive available from the CMOS oscillator.

Here is a circuit like that: 12V DC to 220V 100W Inverter with 4047 IC & IRF540