I have a bunch of LED controllers which I am currently controlling over WiFi. Unfortunately, they are all rated for very small currents of about 2 Amp (ish).
Each LED Color gets driven with a simple N-Channel Mosfet as a low-side switch.
My question is: Assuming my N-Channel mosfet is properly rated, can I drive a load which is much larger with this setup? The PWM Generator symbolizes my LED-Controller, which should pull the Base of the PNP Transistor to Ground since it is just a low-side mosfet. The values of the resistors are all default, I am aware that I have to tweak them properly. The LED on the right hand side of the schematic is basically an entire LED-Strip with three LEDs in series and a huge amount of those three LED Groups in parallel.
Additional technical information:
The maximum current the LEDs should draw is about 6 Amps. I'm planning to use an IRLZ34N with heatsinks. Probably way overkill but I have plenty of those so... why not.
The default PWM Frequency of the controller is 1kHz but I'm thinking about patching that to a higher frequency. I know the chip supports it and right now my power supply gives of annoying high pitched noises even though it is a name brand. The accuracy of the PWM signal isn't critical at all, it's just for some ambient lights. Since I want to dimm them properly, the dynamic range of the duty cycle is very high, so basically 0-100%ish. Usually I won't run them close to 0%. The brightness isn't linear so everything below 40% is almost like switching them off completely.
Will the PWM dimming still work properly?
Everything has a common ground.