Comparison · Converters

Martek power, 48 V → ±12 V, 630 mA or Small Step-Up boards (5 V)

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: Temperature rise: Small Step-Up boards (5 V) (70 °C vs. 85); Price: Small Step-Up boards (5 V) (0.39 $ vs. 0.9).

Model	Martek power, 48 V → ±12 V, 630 mA2019Read review →	Small Step-Up boards (5 V)2015Read review →
Voltage, V	12	5
Temperature rise, °C	85	70
Price, $	0.9	0.39
Review conclusion	Recommended	Recommended

Only in one review: Test current 0.55 A (Small Step-Up boards (5 V)); Weight 16 g (Martek power, 48 V → ±12 V, 630 mA).

Martek power, 48 V → ±12 V, 630 mA: It delivers up to 800 mA, but voltages shift substantially under unbalanced load; overall, the author is satisfied.

Small Step-Up boards (5 V): Cheap, functional boards with good protection; weak as SEPIC converters, but the modification worked.

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.