If the voltage rating (of the DC motor) is 24VDC, then I suggest you to use STP60NF06L ( https://www.st.com/stonline/books/ascii/docs/8690.htm )Fusion80 said:The voltage rating is 24VDC.
Does the power MOSFET still applies?Cause i saw the Vdd(max) to be 18V.
By the way do you know which micro-controller to recommend? I search and found many type of micro-controller available at ST microelectronics.
Thanks for your advices and guidances.
You're right that PWM is a popular approach to control the speed of DC motor. Another approach could be using linear amplifier (without switching) to change the amplitude of voltage applied to DC motor.Fusion80 said:I have seen most of the website havin PWM as a method of speed control. Are there other ways in which speed control could be achieve? Could we regulate the voltage and thus gain speed control? Or did i get the concept of speed control wrongly?
I am actually working on a project of mine. I want to have three variations of speed. slow, medium and fast.
The controller would be mounted on a handle bar so that user can actually chose the speed.
I have the prog of ke*il C and using the full version of it. However, do i have to come up with the circuit to interface with the Microcontroller? example: lcd screen, keypad, leds?
Agree... HIP4080/81/82 can be used.Fusion80 said:Sorry but it seemed that the driver chip is not available at my country. I thought that using HIP4082IP is also possible. What are your thoughts? Attached is the datasheet.
Could you recommend other chips if you dont advise for the above mentioned chip.
Fusion80 said:I have used HIP 4082IP as the driver circuit.
Upon studying the datasheet, i found myself having the difficulty of calculating the values of resistors and diodes of the configuration.
How do I come up with the PWM input to the the circuit?
How am I to supply the 12V to the chip?
I will still be using the STP60NF06L as the power mosfet. It is a bit confusin with the circuit diagram they provided in the data sheet.
Please advise,
Best Regards,
Fusion80[/code]
If you do not need current monitoring (e.g. for control or overcurrent protection), R2 ~ R6 can be omitted. R1 is to adjust the dead time between high-side and low-side switches in one leg. You can choose 100kohm for R1.Fusion80 said:YEs. The schemetic is found on page 2.
I do not how to caculate the resistors, capacitor and diode value for the circuit.
Am i correct to say that to control the speed of the motor and the direction, I would have to use the microcontroller to control the logic level at the PWM. (ex. ALI & BLI)
The PWM signal can be generated from a PWM circuit (e.g. dedicated IC) or microcontroller.Fusion80 said:How do i inject signals to the PWM inputs(ALI & BLI)?what do you mean by
" the dead time between high-side and low-side switches in one leg"
"Bootstrap Supply Design" works for DC battery source? cause i will be using a car's battery to connect to the circuit.
Now with the supply, how am i suppose to power 12V to the driver as my battery is 24V.
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