
When working on electronics projects, many engineers and hobbyists encounter issues with wireless charging, especially when low voltage makes the charging process unstable. This can cause your devices to either charge slowly or not at all. The root of this issue often lies in improper voltage regulation or insufficient current flow.
The Problem :
Wireless chargers rely on a stable and sufficient voltage to transfer power to your device. If the voltage drops too low (below the required threshold), the charging efficiency suffers, causing your device to charge slowly or even stop charging.
The Solution :
To fix this, you need a reliable voltage regulator circuit that ensures a steady voltage output. A simple approach would be using a buck converter that steps down the voltage to the required level without causing significant power loss.
Practical Example :
Imagine you’re building a portable wireless charger for your smartphone. Your power supply provides 9V, but your charging circuit needs a stable 5V to work effectively. If the voltage dips below 5V, the phone won’t charge properly. By adding a buck converter circuit between the power supply and the charger, you can ensure a steady 5V output.
Sample Calculation :
Let’s say you need to step down from 9V to 5V with a current of 2A.
The power before the converter is
P=V×I=9V×2A=18WP = V \times I = 9V \times 2A = 18WP=V×I=9V×2A=18W.
After stepping down to 5V, the output power is
P=V×I=5V×2A=10WP = V \times I = 5V \times 2A = 10WP=V×I=5V×2A=10W.
The efficiency of your converter plays a role in minimizing losses during the conversion.
Product Recommendations :
To optimize your low-voltage wireless charging projects, consider using high-quality components like a buck converter or MOSFET. Check out products on SmartXProKits and SmartXProKits.
Shop now at SmartXProKits.in – Support our work and India’s innovation by buying locally and investing in top-notch, Made in India prototyping components!
Written by smartxbrains
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