Efficiency Fitter

Stage: --

X-Axis Scale: X-Axis Min (mA): X-Axis Max (mA): Y-Axis Min (%): Y-Axis Max (%):

Current: -- mA, Efficiency: -- %

Select Series: New Series Name: Output Voltage (V):

Calculate Interpolated Series

Calculated Series Name: Series 1 (Base): Series 2 (Target): Interpolation Ratio (0 to 1):

Enter a name for the new series, select two existing series, and specify an interpolation ratio between 0 and 1. The ratio determines how far the new series is from Series 1 (Base) to Series 2 (Target). A ratio of 0 matches Series 1, 1 matches Series 2, and 0.5 is halfway.

Example: To estimate 13Vin between Series 1 (Base) = 12Vin and Series 2 (Target) = 24Vin, calculate the ratio as

Ratio = 13 - 1224 - 12 = 112 ≈ 0.167

Enter 0.167 as the ratio. If Series 1 (Base) = 24Vin and Series 2 (Target) = 12Vin, the ratio would be

Ratio = 13 - 2412 - 24 = -11-12 = 1112 ≈ 0.917

Alternatively, use 1 - 0.167 = 0.833.

Upload the graph image.
Select X-axis scale and enter axis ranges to the left.
Align the vertical cursor with known X-axis values, click to add points, then click "Apply X-Axis Calibration".
Align the horizontal cursor with known Y-axis values, click to add points, then click "Apply Y-Axis Calibration".
Use the stage indicator and magnifying glass above the image to guide calibration and dot placement. For logarithmic X-axis, place more points at low currents for better accuracy.
Select a series, hover to see coordinates, click on the curve to place dots.
Click "Fit Curve" to generate the plot and CSV.

Fitted Curves

Data Table

CSV Points (up to 1000):

Current (mA)	Efficiency (%)