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I need to switch 8 IRF9540 (P-Channel Mosfets) with about 32kHz (so 1 MOSFET about 4kHz) so that only one is On at one time. I thought about using the decade counter 4017 for this, and the 555 Timer for driving the 4017. Because of the low output current of the 4017 the Mosfet would take a long time to switch completly or am I thinking wrong? Is this a possible layout for a simple Mosfet driver for switching the mosfet faster than without the npn transistor?

EDIT: Maybe it's helping I have to switch 4A at maximum. It should switch with about 32kHz (so 1 MOSFET about 4kHz)

schematic

simulate this circuit – Schematic created using CircuitLab

respectively what is the differnce between these two schematics in switching speeds?

schematic

simulate this circuit

I need to switch 8 IRF9540 (P-Channel Mosfets) with about 32kHz (so 1 MOSFET about 4kHz) so that only one is On at one time. I thought about using the decade counter 4017 for this, and the 555 Timer for driving the 4017. Because of the low output current of the 4017 the Mosfet would take a long time to switch completly or am I thinking wrong? Is this a possible layout for a simple Mosfet driver for switching the mosfet faster than without the npn transistor?

EDIT: Maybe it's helping I have to switch 4A at maximum. It should switch with about 32kHz (so 1 MOSFET about 4kHz)

schematic

simulate this circuit – Schematic created using CircuitLab

I need to switch 8 IRF9540 (P-Channel Mosfets) with about 32kHz (so 1 MOSFET about 4kHz) so that only one is On at one time. I thought about using the decade counter 4017 for this, and the 555 Timer for driving the 4017. Because of the low output current of the 4017 the Mosfet would take a long time to switch completly or am I thinking wrong? Is this a possible layout for a simple Mosfet driver for switching the mosfet faster than without the npn transistor?

EDIT: Maybe it's helping I have to switch 4A at maximum. It should switch with about 32kHz (so 1 MOSFET about 4kHz)

schematic

simulate this circuit – Schematic created using CircuitLab

respectively what is the differnce between these two schematics in switching speeds?

schematic

simulate this circuit

    Notice added Draw attention by Ribisl
    Bounty Started worth 50 reputation by Ribisl
6 added 21 characters in body
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I need to switch 8 IRF9540 (P-Channel Mosfets) with about 32kHz (so 1 MOSFET about 4kHz) so that only one is On at one time. I thought about using the decade counter 4017 for this, and the 555 Timer for driving the 4017. Because of the low output current of the 4017 the Mosfet would take a long time to switch completly or am I thinking wrong? Is itthis a possible to switch my IRF9540'slayout for a simple Mosfet driver for switching the mosfet faster, than without the NPN Transistor with this circuitnpn transistor?

EDIT: Maybe it's helping I have to switch 4A at maximum. It should switch with about 32kHz (so 1 MOSFET about 4kHz)

schematic

simulate this circuit – Schematic created using CircuitLab

I need to switch 8 IRF9540 (P-Channel Mosfets) with about 32kHz (so 1 MOSFET about 4kHz) so that only one is On at one time. I thought about using the decade counter 4017 for this, and the 555 Timer for driving the 4017. Because of the low output current of the 4017 the Mosfet would take a long time to switch completly or am I thinking wrong? Is it possible to switch my IRF9540's faster, than without the NPN Transistor with this circuit?

EDIT: Maybe it's helping I have to switch 4A at maximum. It should switch with about 32kHz (so 1 MOSFET about 4kHz)

schematic

simulate this circuit – Schematic created using CircuitLab

I need to switch 8 IRF9540 (P-Channel Mosfets) with about 32kHz (so 1 MOSFET about 4kHz) so that only one is On at one time. I thought about using the decade counter 4017 for this, and the 555 Timer for driving the 4017. Because of the low output current of the 4017 the Mosfet would take a long time to switch completly or am I thinking wrong? Is this a possible layout for a simple Mosfet driver for switching the mosfet faster than without the npn transistor?

EDIT: Maybe it's helping I have to switch 4A at maximum. It should switch with about 32kHz (so 1 MOSFET about 4kHz)

schematic

simulate this circuit – Schematic created using CircuitLab

5 added 59 characters in body
source | link

I need to switch 8 IRF9540 (P-Channel Mosfets) with about 32kHz (so 1 MOSFET about 4kHz) so that only one is On at one time. I thought about using the decade counter 4017 for this, and the 555 Timer for driving the 4017. Because of the low output current of the 4017 the Mosfet would take a long time to switch completly or am I thinking wrong? Is it possible to switch my IRF9540's faster, than without the NPN Transistor with this circuit?

EDIT: Maybe it's helping I have to switch 4A at maximum. It should switch with about 32kHz (so 1 MOSFET about 4kHz)

schematic

simulate this circuit – Schematic created using CircuitLab

I need to switch 8 IRF9540 (P-Channel Mosfets) with about 32kHz (so 1 MOSFET about 4kHz) so that only one is On at one time. I thought about using the decade counter 4017 for this, and the 555 Timer for driving the 4017. Because of the low output current of the 4017 the Mosfet would take a long time to switch completly or am I thinking wrong? Is it possible to switch my IRF9540's faster, than without the NPN Transistor with this circuit?

EDIT: Maybe it's helping I have to switch 4A at maximum.

schematic

simulate this circuit – Schematic created using CircuitLab

I need to switch 8 IRF9540 (P-Channel Mosfets) with about 32kHz (so 1 MOSFET about 4kHz) so that only one is On at one time. I thought about using the decade counter 4017 for this, and the 555 Timer for driving the 4017. Because of the low output current of the 4017 the Mosfet would take a long time to switch completly or am I thinking wrong? Is it possible to switch my IRF9540's faster, than without the NPN Transistor with this circuit?

EDIT: Maybe it's helping I have to switch 4A at maximum. It should switch with about 32kHz (so 1 MOSFET about 4kHz)

schematic

simulate this circuit – Schematic created using CircuitLab

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