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Automatic Battery Charger Help Needed. I am using a V 5A transformer for it. I will be designing a Buck Converter. The input voltages to the Buck Converters are as below.
How should I proceed further?
PWM duty will be adjusted to get boost voltage and trickle charge voltages but how to detect the voltage needed to be applied to the battery that is I am designing like this.
Fatasheet battery is not connected or battery is removed then charging stops and there will be no output voltage.
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When battery is connected, it will measure the battery voltage and if battery voltage is less irfp04n Is this method correct? I am using ACS 5A type to monitor the battery current.
If high current is drawn then charger will be switched off. There will be saftey fuses. Here is the rough schematic.
I have not yet calculated the buck converter inductor and capacitor values. This is the best mosfet I found. So, power dissipated in datadheet Pd mosfets will be 2 x 2. I am trying to get information about charging current for 12V and 6V max 12Ah batteries but not getting.
What is the safe charging current for 6V and 12V max 12Ah batteries for boost charging and trickle charging?
Automatic Battery Charger Help Needed
ADC interface circuit resistor values have not yet calculated. Here is new schematic. There was a mistake in 5V power Led connection. Also I have to calculate Buck Inductor and Capacitor values. Sorry, the post dataeheet updated. Please check the latest simulation. Also attached schematic in PDF format and simulation video without battery connected.
I still have to find the values of Buck Inductor and Capacitor. I am just checking the signals. I am referring this. It is in percentage. Buck Inductor and capacitor datasbeet have been calculated. PWM frequency is 84 KHz.
I couldn’t reduce this frequency. Peak to Peak output ripple voltage is 50 mV. Required current is 3A. Now I am writing code for the Automatic Battery Charger. Automatic Battery Charger Help Needed The question I am going to ask now is related to this project only and hence I am asking it in this thread only.
No I dataeheet find out the pinout of this Mosfet. Please provide the pinout of this Mosfet. I have the datasheet but it doesn’t show the pinout.
I need to know which pin is G, D and S. I found it after you mentioned it. Please direct me to the equation. I read at microchip forum that if higher PWM frequency and also higher pwm resolution is needed then higher clock frequency has to be used.
I require these PWM duties. I am not getting 4A or higer Ampere rated inductor for other inductance values. Here are the calculations. Automatic Battery Charger Help Needed I am posting in this thread because the question is related to this same project. Attached it the Project. I am testing in real hardware. I was waiting for datashedt dsPIC33 development board. Today I received Easy v6 development board from mikroElektronika.
I tested the project on it and I am getting incorrect PWM frequency. I can’t change PWM frequency now.
PCB Layout is being designed for the project. You can see from the picture that PWM frequency is Attached Thumbnails Attached Files. I am getting now Automatic Battery Charger Help Needed I don’t understand how you are setting the oscillator configuration. I can dztasheet configure Oscillator registers.
Sorry, I forgot to post the picture in my last post. Here is the picture. It shows Oscillator settings. These are the new configurations. I just read the datasheet and configured those registers. Other things are working.
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