1. What is a Constant Voltage LED Driver Calculator?

Definition: This calculator estimates the power requirement for a constant voltage LED driver based on total current and system voltage.

Purpose: It helps lighting designers and electrical professionals properly size LED drivers for constant voltage LED systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{driver} \) — Driver power requirement (watts)
• \( I_{total} \) — Total current of all LEDs (amperes)
• \( V \) — System voltage (volts)

Explanation: The total current drawn by all LEDs is multiplied by the system voltage to determine the minimum power requirement for the driver.

3. Importance of Proper Driver Sizing

Details: Correct driver sizing ensures stable LED operation, prevents overheating, and maximizes LED lifespan while maintaining efficiency.

4. Using the Calculator

Tips: Enter the total current of all LEDs in amperes and the system voltage (default 12V). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical voltage for LED systems?
A: Common voltages are 12V and 24V, though some systems use 5V or 48V depending on the application.

Q2: How do I find the total current?
A: Sum the current requirements of all LEDs in the circuit (check manufacturer specifications).

Q3: Should I add a safety margin?
A: Yes, it's recommended to select a driver with 20-30% more power than the calculated value.

Q4: What's the difference between constant voltage and constant current drivers?
A: Constant voltage maintains fixed voltage (for parallel LED connections), while constant current maintains fixed current (for series connections).

Q5: Can I use this for AC systems?
A: No, this calculator is for DC systems. AC systems require different calculations considering power factor.