As a matter of fact, the configuration shown here, even if complicated with emitter and collector resistors, is a well-known source of distortion when used in audio amplifiers, because it has a “dead zone” around zero. Low Ro can cause problem, but not really a saturation recovery problem. Use devices that have a ‘soft’ reverse recovery instead. Or, you can use a single stage fet driver and eliminate a bunch of IC’s and real estate being taken up by discreets. The process is exponential. I have always enjoyed reading your posts and comments and have learnt a lot from them. No heat sink yet!

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HatimB 2 8. An efficient and fast discreet gate driver design is really a challange then.

totemm I would like to know why doesn’t shoot-through occur in this circuit during the transition time of the clock pulse e. As it’s a DC-DC converter you must want that. The Mosfet is driving a simulated Bunch of Led’s and resistors wire wound load of 2.

EveryCircuit – Totem pole MOSFET driver

However the present value of R2 oole the base current, because the voltage across R2 will be relatively low, so mofset transistors will not saturate hard and will turn off relatively fast. Software simulation just cuts some of the costs of blown up components and also does the mathematics for someone like me who is learning to read the datasheets properly! Low Ro can cause problem, but not really a saturation recovery problem.


May I suggest that you get yourself a copy of a book called “The art of electronics” by Horowitz and Hill. Anything needing ground gets soldered directly to the ground plane.

There is nothing like actually breadboarding a design and trouble-shooting your creation with a scope. After all it’s Nature your circuit has to please, not a simulator. Is that what you mean? It is a large tome of over pages and is relatively expensive. I don’t understand your reasoning there. Also, would it change anything if i pulled the base of Q1 down to ground instead of pulling it up?

However, what you have is not a totem pole configuration. V tp and V gs overlap.

ppole And when saturated, it will take a significant time to turn off after the base current is removed. PWM pulses are to be given to totem pole configuration.

mosfft That’s why i am confused as how to keep signal in phase which is to be given to totem pole from microcontroller with that of output. Since the transistor that is mksfet off will have one B-E drop negative bias applied to it when the other starts to turn on.


Keeping your FET turned off with nothing happening. I plan to go to 25KHz and higher if possible!!!! A push-pull output driver for example. Follow us on All times are GMT As I said in an earlier post, when trying to switch FET’s quickly, resistance is your enemy. Again, with nospecific requirements, as oscillation frequency and output MOSFET characteristics, nothing can be calculated.

Totem pole MOSFET driver

DAC input digital signals, how to generate? The pF is a “speed-up cap”. Now the remark about totem pole being unsuitable because it inverts, makes no sense and makes me think you’re in way over your head.

Power supply is now V. Equating complex number interms of the other 5. Here’s my latest take on this: At 18KHz going by the prog.