How Can Current Output Be Increased in a PWM-Based Boost Converter?

In summary, the conversation discusses the design of a DC-DC capacitive based charge controller for charging a 12V battery using a variable DC power supply and solar panel as input sources. The charge controller uses a step up boost converter with PWM variable duty cycle technique to fix the output at 12V. However, the circuit produces a minimum current of 100 to 500mA, resulting in a maximum output power of 7W. The desired power output is 40 to 50W, matching the power from the solar panel. The conversation also mentions the circuit and block diagrams of the project and inquires about measuring current and voltage in the circuit and the power source for the microcontroller.
  • #1
Hina Gohar
23
0
I am designing DC-DC capacitive based charge controller for charging 12V battery using variable dc power supply and then with solar panel as input sources.This charge controller topology is step up boost converter so by using PWM variable duty cycle technique I made its output fixed at 12V but problem is that this circuit produces very minimum current from 100 to 500mA..so maximum output power is P=12*500m=>7W while I need around 40 to 50W power from this circuit as maximum power coming from solar panel is 40W.There must be power matching between source and load means as from panel 40W coming so this circuit must produce 40W.So how I can enhance current in this circuit kindly help.Circuit diagram of capacitor based DC-DC converter is attached plus block diagram of whole project.
 

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  • #2
Where in the circuit are you measuring the current and the voltage?
Where does the 12V battery go in this circuit?
Where does the microcontroller get it's power from?

Generally you cannot just set the voltage and current for a load at the same time - you fix one and the load determines the other.
 

Related to How Can Current Output Be Increased in a PWM-Based Boost Converter?

1. How does increasing the current affect a circuit?

Increasing the current in a circuit means that more charge is flowing through the circuit per unit of time. This can result in higher power consumption and potentially cause components to overheat or fail.

2. What are some ways to increase current in a circuit?

There are a few ways to increase current in a circuit, such as using a larger power source, reducing resistance in the circuit, or adding more components in parallel.

3. Can increasing current damage a circuit?

Yes, increasing current beyond the capabilities of the circuit components can cause damage. It is important to ensure that the circuit is designed to handle the desired current and that proper safety measures are in place.

4. Is increasing current the same as increasing voltage?

No, increasing current and increasing voltage are two different concepts. Increasing current means more charge is flowing through the circuit, while increasing voltage means an increase in the electric potential difference between two points in the circuit.

5. Are there any benefits to increasing current in a circuit?

In certain cases, increasing current can be beneficial, such as in high-power applications where a larger current is needed to drive motors or heat elements. However, it is important to carefully consider the potential drawbacks and make sure the circuit can handle the increased current safely.

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