Vin:3.5-35V  Vo:1.25-30V DC Converter Auto Boost Buck Power SupplySpecification:Input Voltage:   DC 3.5 ~ 35 V ( Change input voltage, Output not Change )Output Voltage:  DC 1.25 ~ 30 V ( auto Buck & Boost; Input change, output constant voltage, adjustable )Input Current:     3.5A ( Max )Output Rated Current:  2A ( Vin: 9-35, Vo: 12V;   when Vo: 5V, 3A max )Rated & Max Power:  18W,  24W  Natural cooling ( Vin > 10V )Max Efficiency:  85% ( in: 24V, out: 12V 2A;      in: 12V, out: 5V 1A  80% )Module Properties:  Non-isolated step-down/UP module (BUCK & BOOST)Full Load temperature rise:   45 ℃No load current:   10 mAOutput ripple:   20M bandwidth, 50mVLoad Regulation:    1%Voltage Regulation rate:   0.5%Dynamic response speed:  5% 200uSShort-circuit Protection :   Yes ( 10s )Input Reverse Protection:  NoneOperating Temperature:   Industrial (-40 ℃ to +85 ℃)Size: 50 x 25 x 28 mm ( L*W*H  )Weight: 48gPacking Included1 x Auto Boost/Buck DC Power Supply Module