Comparison · Converters

LM2596 DC-DC converter board or Large Step-Up board modified into a SEPIC

Two models side by side: measurements taken by the author in their reviews, and their conclusions. The better value in each row is highlighted.

In brief: Based on review measurements: Test current: Large Step-Up board modified into a SEPIC (2 A vs. 1.5); Temperature rise: LM2596 DC-DC converter board (60 °C vs. 70).

Model	LM2596 DC-DC converter board2016Read review →	Large Step-Up board modified into a SEPIC2015Read review →
Current, A	3	2
Test current, A	1.5	2
Temperature rise, °C	60	70
Review conclusion	With reservations	Recommended

Only in one review: Voltage 28 V (Large Step-Up board modified into a SEPIC); In test 3.3 W (Large Step-Up board modified into a SEPIC); Under load 3 V (Large Step-Up board modified into a SEPIC); Price 0.6 $ (Large Step-Up board modified into a SEPIC).

LM2596 DC-DC converter board: The board works, but its ICs may be counterfeit; the author recommends keeping the load at or below 1.5 A.

Large Step-Up board modified into a SEPIC: After modification, the board works stably and delivers up to 700 mA at 3.3 V from a lithium cell.

Figures were taken from the review text and checked against the quoted passages. Measurement conditions differ between reviews, so read the reviews yourself before buying. Prices at the time of review.