DC 7-32V to 0.8-28V Adjustable Step Down Power Supply Module Buck Converter

Module parameters:

• Module Properties: non-isolated step-down constant current , constant voltage module (CC CV) charging module
• Input voltage : 7-40V
• Output voltage :1.2-35V continuously adjustable
• Output Current: 8A ( when power tube's temperature exceeds 65 degrees, please add cooling fan )
• Constant current range :0.2-12A ( adjustable )
• Turn lamp current : constant current value * ( 0.1 ) , turn the lamp current and constant value linkage, such as constant current value is 3A, turn the lamp current is set to a constant current is 0.1 times (0.1 * 3A = 0.3A).
• Lowest pressure : 1V
• Output Power: Maximum power is about 300W
• Conversion efficiency : up to about 95%
• Operating frequency : 300KHZ
• Output ripple : 20M bandwidth
• Input 24V Output 12V 5A ripple around 50mV ( excluding noise )
• Operating temperature : Industrial grade (-40 ℃ to +85 ℃) ( please note the actual use of the power tube temperature , high temperature heat strengthened please )
• No-load current : Typical 20mA (24V switch 12V)
• Load regulation : ± 1% ( constant )
• Voltage regulation : ± 1%
• Dynamic response speed : 5% 200uS
• Potentiometer adjustment direction : clockwise ( increase ) , counterclockwise ( decrease ) . the potentiometer(CV) closed to the input voltage is used to regulate voltage,  the potentiometer(CC) closed to output voltage is used to regulate current (CC)
• Indicator : dual color indicator , charging indicator light is red , the green light means fully charged ( No load is green )
• Output short circuit protection : Yes , constant current
• Dimensions : 65  * 47  * 23.5  mm

• 1. Make sure the recharge battery float voltage and charge current, input voltage of the module.
• 2. adjust constant voltage regulator, the output voltage about 5V.
• 3. With a multimeter ( to 10A) Measuring output Short-circuit current, Also adjust the constant regulator allows Output current reaches a predetermined charge current value;
• 4. Adjust Constant regulator allows Output voltage reaches the float voltage;
• 5. connected to the battery, try charging.
• (1,2,3,4 step input connect power, output do not connect battery.)

• 1. Make sure LED current and the maximum operating voltage;
• 2. adjust constant voltage regulator, the output voltage about 5V.
• 3. With a multimeter ( to 10A) Measuring output Short-circuit current, Also adjust the constant regulator allows Output current reaches a predetermined LED working current value;
• 4. Adjust Constant regulator allows Output voltage Reach LED maximum working voltage;
• 5. Connected to the LED, test.
• (1,2,3,4 take steps input connect power, output do not connected LED.)

• High-power LED constant current driver, rechargeable lithium batteries (including ferroelectric), 4V, 6V, 12V, 14V, 24V rechargeable batteries, nickel-cadmium nickel-metal hydride batteries (battery pack) charging, solar panels, wind turbines

• 1x DC Step-down Power Converter