3A 4A DC-DC 35W Digital Display CC CV Buck Boost Power Supply Regulator Module

Description

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DC-DC 3A/4A DC-DC 35W LED Display CC CV Buck Boost Power Supply Regulator Module
3A Without display
Introduction:
Wide voltage input 5.5-30V, wide voltage output 0.5-30V, both boost can also buck, such as you adjust the output voltage of 18V, then the input voltage between 5.5-30V casually change, will be constant output 18V; then For example, you enter 12V, adjust the potentiometer settings 0.5-30V arbitrary output.
High power, high efficiency, better performance than XL6009 / LM2577 program. Using external 60V75A high power MOS, parallel high current high withstand voltage Schottky diode SS56. Not 6009 or 2577 program SS34 can be compared, because according to the principle of step-up and down, MOS and Schottky's pressure is greater than the sum of the input and output voltage. Iron silico aluminum magnetic ring inductance, high efficiency.
Constant current mode without electric whistle.
You can set the current size, used to limit the output current, constant current drive, battery charging lamp occasions.
Comes with the output anti-backwash function, to the battery charge without additional anti-flooding diode.
Parameters:
Input voltage: 5-30V
Output voltage: 0.5-30V
Output current: to long-term stability in the 3A, to strengthen the heat can reach 4A
Output power: natural cooling 35W, strengthen the heat 60W
Conversion efficiency: 88% or so
Short circuit protection: Yes
Operating frequency: 180KHZ
Size: 65 * 32 * 21mm(L*W*H)
Weight: 30g
Module use:
1. Used as a general step-up and step-down module with overcurrent protection capability
Instructions:
(1) Adjust the CV constant voltage potentiometer so that the output voltage reaches the value you want.
(2) with the multimeter 10A current measurement output short-circuit current (directly to the two test leads can be connected to the output), while adjusting the CC constant current potentiometer so that the output current to achieve a predetermined over-current protection value. (Such as multimeter shows the current value is 2A, then you use the module when the maximum current can only be 2A, the current to 2A when the red constant voltage constant current indicator light, otherwise the indicator light off)
Note: When used in this state, because the output has 0.05 ohm current sampling resistor, connected to the load will be 0 ~ 0.3V voltage drop, this is a normal phenomenon! This voltage drop is not pulled down by your load, but is reduced to the sampling resistor.
2. Used as a battery charger
Non-constant current function of the module can not be used to charge the battery, due to the power consumption of the battery and the charger is very large, resulting in charging current is too large, resulting in battery damage, so the beginning of the battery to use constant Flow charge, when the charge to a certain extent, when the automatic switching back to constant voltage charging.
Instructions:
(1) to determine the rechargeable battery you need to recharge the battery voltage and charge current, if the lithium battery parameters of 3.7V / 2200mAh, then the float voltage of 4.2V, the maximum charge current of 1C, or 2200mA.
(2) no-load conditions, the multimeter to measure the output voltage, adjust the constant voltage potentiometer so that the output voltage to float voltage; (if the 3.7V lithium battery charge, the output voltage can be adjusted to 4.2V)
(3) with a multimeter 10A current measurement output short-circuit current (directly to the two test leads can be connected to the output), while adjusting the constant current potentiometer so that the output current reaches a predetermined charge current value;
(4) Charging Turn the lamp current factory default 0.1 times the charging current. (The battery in the process of charging the current is gradually reduced, and gradually from constant current charging to constant voltage charging, if the charge current is set to 1A, then when the charge current is less than 0.1A, the blue light off, green light Since the battery charge is completed)
(5) connected to the battery, charging.
(Steps 1, 2, 3, 4 are: input termination power supply, the output does not load the battery)
3. Used as a high power LED constant current drive module
(1) determine the operating current and maximum operating voltage you need to drive the LED;
(2) under no-load conditions, multimeter to measure the output voltage, adjust the constant voltage potentiometer to the output voltage to LED maximum operating voltage;
(3) measuring the output short-circuit current with the multimeter 10A current level while adjusting the constant current potentiometer so that the output current reaches the predetermined LED operating current;
(4) connected to the LED, test machine.
(Step 1, 2, 3: input power supply, the output is no load, do not with LED lights.)
Note: If the module using is more than 3A, 35W , please strengthen the heat!
Precautions:
1. The module input IN- is disabled from the output OUT-, otherwise the constant current function is disabled.
2. Make sure that the power time of the power supply is greater than the power required for the output load!
3. Module input No input anti-reverse function, please pay attention to the direction of power supply positive and negative.
4. Input voltage to 8V or more, the module can the maximum power output, when the input voltage is 5V, the output power of about 15W. Module current value of the maximum 4A, the premise is limited by the maximum output power, such as the output 17V, the current should not be greater than 2A.
5. Module with output short circuit protection, short circuit protection module automatically shut down the output, to re-power the module can be restored, if your power supply without output current limit protection, it is recommended in the module input front-end fuse, improve safety factor.
6. The module has input undervoltage protection function, the default is about 4.2V, below this value, it will automatically disconnect the output, to re-power the module can be restored (note that the module port voltage, when the input current is relatively large , Do not ignore the input voltage on the wire).
7. The module contains three indicators, constant voltage constant current status indication (red, constant current mode light), charge indication (blue), full of instructions (green, turn the lamp current is 0.1 times the set current).
Package Include:
1 x DC-DC 3A 35W Auto Buck Boost Step up/down Power Supply Module CC CV Regulator
4A With Display
Buck-boost module (constant voltage constant current LCD version)
Product highlights:
1. LCD input and output voltage, output current output power;
2. Input anti-reverse protection, reverse connection will not burn;
3. Can be step-up and step-down, the output voltage 0.5-30V arbitrary regulation, limiting the current 0-4A arbitrary regulation;
4. output anti-intrusion, the battery charge without additional anti-reflux diodes;
5. Button control output ON / OFF status, and you can set the power-on default is ON or OFF;
6. Ascending and descending chip used as the main controller, external 60V 75A MOS tube as a switch, double 60V 5A SS56 Schottky rectification, 60V voltage value, superior to the market immature XL6009 / LM2577 program (a lot Device pressure value is not enough, MOS tube and Schottky diode pressure value must be greater than the input plus input voltage value);
7. Output ripple small, LC filter;
8. With heat sink, send module support isolation column.
Product parameters:
Input voltage: 5.5-30V (input voltage 5V, you can normally achieve buck-boost, but the voltage and current meter values ​​are not accurate; less than 4.7V, undervoltage protection)
Output voltage: 0.5-30V
Output current: long-term stable work in 3A, strengthen the heat can reach 4A
Output power: 35W natural cooling, heat dissipation to enhance 50W
Voltage display resolution: 0.05V
Current display resolution: 0.005A
Conversion efficiency: about 88%
Soft-start: Yes (very powerful with load startup, startup may fail)
Input reverse protection: Yes
Output anti-intrusion: Yes
Short circuit protection: yes
Working frequency: 180KHZ
Size:66 * 48 * 21mm( L * W * H )
Mounting hole: 4mm in diameter
Weight: 46g
Function Description:
1. Module has IN / OUT, ON / OFF two buttons: IN / OUT button to switch the input voltage and output voltage display, long press to switch the output current output power display; ON / OFF button control output ON or OFF, long press Set power on default output status is ON or OFF.
2.CC is the current setting potentiometer, clockwise rotation, can increase the set current, when the load current reaches the set current, enter the constant current state, CC constant current indicator (red) lights up; the right CV is the voltage setting Potentiometer, clockwise rotation, can increase the output voltage. ON indicator is the output status indicator, when the output voltage is on, otherwise off.
How to use:
1. Used as an ordinary buck-boost module with over-current protection capability
(1) Adjust the CV constant voltage potentiometer so that the output voltage reaches the voltage you want.
(2) Measure the output short-circuit current with 10A current meter (connect the two test leads directly to the output end), and adjust the CC constant current potentiometer to make the output current reach the preset over-current protection value. (For example, if the current value displayed by the multimeter is 2A, the maximum current will only reach 2A when you use the module. When the current reaches 2A, the red constant voltage and constant current LED is on, otherwise the LED is off)
Caution: When using in this state, there will be a voltage drop of 0 ~ 0.2V due to the current sampling resistor at the output. At the same time, the input and output leads will have a certain linear voltage drop This is a normal phenomenon!
2. Used as a battery charger
Without constant current function of the module can not be used to charge the battery, due to the power of the battery and the charger pressure drop is large, resulting in charging current is too large, causing damage to the battery, so the beginning of the battery to use constant Flow charging, when the charge to a certain extent automatically switch back to constant voltage charging.
(1) Determine the float voltage and charging current for which you need the rechargeable battery (if the lithium battery parameter is 3.7V / 2200mAh then the float voltage is 4.2V and the maximum charging current is 1C, ie 2200mA)
(2) Under no-load condition, the multimeter measures the output voltage and adjusts the constant voltage potentiometer so that the output voltage reaches the float voltage. (If the 3.7V lithium battery is charged, adjust the output voltage to 4.2V)
(3) Measure the output short-circuit current with 10A current meter (directly connect the two test leads to the output terminal), and adjust the constant current potentiometer so that the output current reaches the predetermined charge current value;
(4) Connect the battery, charging.
(Steps 1, 2 and 3 are as follows: input termination power supply, the output is not connected to the battery load)
3. Used as LED constant current driver module
(1) Make sure you need to drive the LED operating current and the maximum operating voltage;
(2) Under no-load conditions, the multimeter measures the output voltage and adjusts the constant voltage potentiometer so that the output voltage reaches the maximum operating voltage of the LED.
(3) with a multimeter 10A current measurement output short-circuit current, while adjusting the constant current potentiometer so that the output current reaches the predetermined LED operating current;
(4) connected to the LED, test machine.
(Steps 1, 2, and 3 are as follows: Input the power and output the no-load LED.)
Note: This module is more than 3A, 35W use, please strengthen the heat! ! !
Note:
1. Module input IN- Prohibit short circuit with output OUT-, otherwise constant current function will be invalid.
2. Please make sure that the power of the power supply is greater than the power required by the output load!
3. If the module is to be fully loaded with output, the input voltage should be over 8V. When the input voltage is 5V, the output power is about 15W, and the voltage ammeter fails. Module current value 4A, the premise subject to the maximum output power, such as the output 17V, the current should not exceed 2A.
4. Module with output short-circuit protection, short-circuit protection module automatically shut down the output, the module can be restored on the power, if your power supply without output current limiting protection, it is recommended that the module input front-end fuse in series to increase the safety factor.
5. The module has input under-voltage protection function, the default is about 4.7V. Below this value, the output will be disconnected automatically and the module can be powered on again (note the voltage at the module port. When the input current is relatively large Do not ignore the partial pressure on the input wire).
Package Include:
1 x DC-DC 5.5-30V 0.5-30V 35W Buck Boost Power Supply Module Adjustable LCD digital Voltmeter Ammeter
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