DC 7-35V to 1.25-30V Converter Adjustable - 3A

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Converter charging module power supply from 7-35V to 1.25-30V Adjustable - 3A


Battery charger (including ferroelectric), 4V, 6V battery charger, 12V, 14V, 24V
nickel-cadmium nickel-metal hydride battery charger (battery), solar panels, wind generators.
Solar panel, wind generator voltage regulator, car power supply.
Technical specifications
  • Input voltage: 7-35 V.
  • Output voltage: 1.25-30 V. 
  • Output current: max 3A (if higher than 15W, please install the heatsink which is not included in the article)
  • Constant current range: 0-3A (adjustable)
  • Minimum voltage pressure: 2V 
  • Output power: 15W natural cooling, 25W with heat sink
  • Conversion efficiency: 85% (the higher the output voltage, the higher the efficiency)
  • Operating temperature: industrial (-40° C to + 85° C) (if the ambient temperature exceeds 40° C, reduce power consumption or improve dissipation heat)
  • Temperature rise at full load: 45 °C
  • No-load current: typical 10mA (12V to 4.2V) 
  • Load setting: ± 1%
  • Voltage regulation: ± 0.5%
  • Current Accurac and temperature: Actual Testing, changes of temperature from 20 degrees to 100 degrees, constant current value variation Less than 1% (constant current value 1A)
  • Response speed dynamic: 5% 200uS
  • Direction of adjustment of the potentiometer: clockwise (increase), anticlockwise (decrease) 
  • LED indicator: red charging LED, green charging full LED
  • Output short circuit protection: YES
  • Input reverse polarity protection: YES
  • Corruption prevention Outgoing body: YES


Method of use

  • 1.Check the charging voltage of the charging battery and the charging current, the input voltage of the module
  • 2. adjust the constant voltage regulator, the output voltage about 3V
  • 3. With a multimeter (at 10A) measure the output short-circuit current, also adjust the constant regulator that allows the output current to obtain a predetermined charge current value
  • 4. Adjusting the constant regulator allows the output voltage to get the floating voltage
  • 5. Connect the battery and try to charge

NB (In the first 4 steps connect the power but not the battery, connect it in the fifth step)