Buck Boost Converter Step Up Down Power Supply Module 4.8-30V to 0.5-30V CV CC

Description Buck Boost Converter Step Up Down Power Supply Module 4.8-30V to 0.5-30V CV CC Advantages: – Advanced version. After under-voltage protection is activated, the module can resume self-starting – Large heat sink copper-coated, with high-power rectifier tube – Exquisite workmanship, strict selection of raw materials, reliable quality – For solar charging Features: – Wide voltage input 4.8-30V, wide voltage output 0.5-30V. It can step up and down. For example, if you adjust output voltage to 18V, then any input voltage between 5-30V will make it constantly output 18V. For example, if you input 12V, adjust potentiometer to set any output from 0.5-30V. – High power, high efficiency and better performance than XL6009 / LM2577 solution. Adopt external high-power MOS, large package, high current and high withstand voltage diode. Increase heat dissipation and copper plating. – Current can be set for limiting output current, constant current driving, charging, etc. – Built-in output anti-backflow function. No need to add anti-backflow diode when charging. Specifications: – Input voltage: 4.8-30V – Output voltage: 0.5-30V – Output current: can work stably at 3A for a long time, and can reach 4A under enhanced heat dissipation – Output power: natural heat dissipation 35W, enhanced heat dissipation 60W – Conversion efficiency: about 88% – Short-circuit protection: Yes – Working frequency: 180KHZ – Size: 68 * 37 * 22mm (L*W*H) – Diameter of installation hole: 3mm – Weight: 38.7g Using Methods: 1.Used as a common buck-boost module with over-current protection capability (1)Adjust CV potentiometer to make output voltage reach the voltage value you want (2)Use a multimeter 10A current to measure output short-circuit current (just connect two test probes directly to output end). At the same time, CC potentiometer is adjusted so that output current reaches a predetermined over-current protection value. (For example, current value displayed by a multimeter is 2A, then the maximum current when you use the module can only reach 2A. When current reaches 2A, red constant voltage and constant current indicator is on, otherwise the indicator is off) Attention: When used in this state, because output terminal has a 0.05 ohm current sampling resistor, there will be a voltage drop of 0 ~ 0.3V after connecting a load. This is normal! This voltage drop is not pulled down by your load, but rather to the sampling resistor. 2. Use as a battery charger Modules without constant current cannot be used to charge battery. Due to the large voltage difference between drained battery and charger, when charging current is too large, battery will be damaged. So at the beginning, battery should be charged with constant current. When charging to a certain level, it automatically switches back to constant voltage charging. (1) Determine the floating charge voltage and charging current of the battery you need to charge (if lithium battery parameter is 3.7V / 2200mAh, then floating charging voltage is 4.2V, and the maximum charging current is 1C, which is 2200mA) (2) Under no-load conditions, a multimeter measures output voltage and adjusts constant voltage potentiometer to make output voltage reach floating charge voltage; (if charging a 3.7V lithium battery, adjust output voltage to 4.2V) (3) Measure output short-circuit current with a multimeter’s 10A current (just connect two test probes directly to output end). At the same time, constant current potentiometer is adjusted so that output current reaches a predetermined charging current value; (4) Charging current of changing indicators is 0.1 times charging current by default. (During battery charging process, current is gradually reduced, and gradually changes from constant current charging to constant voltage charging. If charging current is set to 1A, then when the charging current is less than 0.1A, blue light is off and green light is on. At this time, the battery is fully charged) (5) Connect battery and charge. (Steps 1, 2, 3, and 4 are: input end is connected to power supply, and output end is not connected to battery) 3. Used as a high-power LED constant current driver module (1) Determine the working current and maximum working voltage you need to drive LED; (2) Under no-load conditions, use a multimeter to measure output voltage. Adjust constant voltage potentiometer so that output voltage reaches the maximum working voltage of LED; (3) Use a multimeter 10A current to measure output short-circuit current, and adjust constant current potentiometer to make output current reach a predetermined LED operating current; (4) Connect LED and test. (Steps 1, 2, and 3 are: input end is connected to power supply, and output end is not connected to LED light.) Attention: When this module is used over 3A, 35W, please strengthen heat dissipation conditions. Precautions: 1. IN- of the module is forbidden to be short-circuited with OUT-, otherwise constant current function is invalid. 2. Make sure that the power of power supply is greater than the power required by output load. 3. Module has no input anti-reverse connection function.Please pay attention to the positive and negative poles of power supply. 4. If the module wants to output at full load, input voltage should be above 8V. When input voltage is 5V, output power is about 15W. The maximum current value of the module is 4A, and the premise is limited by the maximum output power. For example, if output is 17V, current should not be greater than 2A. 5. The module has output short-circuit protection. 6. The module has input under-voltage protection function. The default is about 4.2V. When it is lower than this value, output will be disconnected automatically, and it can start by itself after the input voltage is restored. 7. The module contains three indicators, constant voltage and constant current status indicator (red light is lit when in constant current mode), charging indicator (blue), fully charge indicator (Green. Current of changing indicators is 1/10 of the set current) . Package Included: – 1 x Buck Boost Module Note: Battery is not included in the package. Shipping Terms – For remote regions, we will charge your extra shipping costs. Usually it cost about 35USD-50USD. We will contact you after your payment. Thanks for your understanding. Custom Duties & Taxes 1. Import duties, taxes, and charges are not included in the item price or postage cost. These charges are the buyer’s responsibility. 2. Avoiding some unnecessary trouble, please check with your country’s customs office to inform us what we should declare its value before shipping.