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

Applications

• 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)