3v to 70v 1200W High Power DC motor running, DC to DC Boost without Singe Irfz44n Mosfet

 

3v to 70v 1200W High Power DC motor running, DC to DC Boost without Singe Irfz44n Mosfet

Here is a step, by step guide on how to create a DC voltage booster that raises 3 volts to 70 volts using an IRFl4n MOSFEt component along, with an inductor diode capacitor and resistor.

Component Details

IRfz44n MOSfet: The IRfz44n MOSfet is the component, for controlling the boost converter, known for its performance, with low resistance and high current capacity minimizing power loss from heat generation.

 Toroidal Coil 100uH: (SWG 18, 18-0-20 Turns, 1.2 Inches Toroidal). Stores energy during every switching cycle, and releases it when required so as to increase the voltage.

5399 Diode (5399): This diode limits any flow of current towards the input during an off period to protect against reverse currents which could cause damage.

Capacitor: 82uf 500v capacitor - For smoothing the output voltage, then it will result in reducing ripple and producing more stable DC output current

Resistor (220R 1/2w: This resistor is used to drive the gate of a MOSFET as it has good switching characteristics or it might be part of a feedback circuit.

How It Works

1. Input Power (3-5V DC): The above circuit typically work with a 3-5v DC input voltage we need to boost into 70V.

2. Switching Control: The center of the boost converter lies in IRFZ44N MOSFET. It is turned on and off rapidly by a PWM (Pulse Width Modulation) signal. A microcontroller (or just a plain timer chip like the NE555) takes care of this by providing such signal to control MOSFET duty cycle.

***Diagram 1***

3. Boosting Voltage:

MOSFET On: When MOSFETOn, inductor will charge due to current and the magnetic field energy is stored within it.

MOSFET Off: That when the MOSFET opens it releases its stored energy through inductor. The gate resistance source has higher voltage, with the input unit step up to increase output stream. As a result, the diode allows current to move towards the output only during this phase.

4. Output Smoothing: A 82uF capacitor in parallel to the output which smooth out ripples generated by fast switching. It is to smooth the output so we can get a stable 60-70V DC on this line.

5. Voltage Regulation: 70V wants to maintain its desired quantity- voltage regulation. The output voltage is monitored by the feedback circuit, and then it changes the duty cycle of PWM signal. Keeps the output voltage stable, even with changes in input voltage or load.

***Diagram 2***

Things to Consider

Efficency:  Requiring high current on input sideto boost 3v back up to 70v. This can create a lot of heat, particularly in the MOSFET and inductor. Read and understand this current rating, ensure the specification of your components are related to it, you can also add a heatsink for the MOSFET if required.

Current Handling: Due to the fact that the input current is significantly greater than the output current, make sure that your inductor and MOSFET are capable of managing the workload. If they do not have sufficient ratings for high currents, they may overheat or malfunction.

Ultimately this setup will effectively boost your 3 volt input to 70 volts.. It's crucial to manage heat dissipation and ensure that component ratings are, in check to secure the safe and dependable functioning of your circuit.