1200W High-power DC-DC Boost Constant Voltage Constant Current Adjustable On-board Charging Power Supply ModuleItem NO.: DC1200W

1200W High-power DC-DC Boost Module

Module Introduction:

The new model has optimized the circuit structure compared to the old model, making the power supply work more stably. At the same time, input anti reverse connection (using 150A MOS anti reverse) and input low battery (low voltage) protection have been added, and the low battery protection voltage can be adjusted from 9-50V to adapt to various batteries. When using a battery for power supply, do not worry about damaging the power module and battery when the battery runs low.

Power Description: As the input current of this power supply is 20A, the output power is related to the input voltage. The higher the input voltage, the greater the power. For example, the input 12V * 20A has a power of 240W, while the input 24V * 20A has a power of 480W. This is the power. Due to limited heat dissipation area, please add a 12V fan for heat dissipation when the input voltage exceeds 10A or the output current reaches 10.

Module parameters:

Module model: SZ-BT07CCCV-A

Module Name: 1200W Boost Constant Current Module

Module nature: Non isolated boost module (BOOST)

Input voltage: DC10-60V (direct input of 10-60V without the need for jumper caps to select voltage) (updated on May 15, 2016)

Input current: 20A (MAX) If it exceeds 15A, please add a fan for heat dissipation (the input current can reach 25A when the input voltage is 12-24V)

Static working current: 15mA (when 12V rises to 20V, the higher the output voltage, the higher the static current will increase)

Output voltage: 12-80V continuously adjustable

Output current: 18A MAX If it exceeds 10A, please strengthen heat dissipation (related to input and output pressure differences, the larger the pressure difference, the smaller the output current)

Constant current range: 0.5-18A (+/-0.3A)

Input anti reverse connection: Yes (150A power MOS anti reverse)

Low battery protection: Yes (9-50V adjustable)

Working temperature: -40~+85 degrees (please strengthen heat dissipation when the ambient temperature is too high)

Working frequency: 150KHz

Conversion efficiency: 92% -97% (efficiency is related to input and output voltage, current, and voltage difference, with low voltage difference and high efficiency)

Input overcurrent protection: Yes (if the input exceeds 25A, automatic protection will be provided, and the power supply will not be boosted)

Short circuit protection: With (input 30A fuse) dual short circuit protection, it is safer to use.

Input reverse protection: With (150A power MOSFET anti reverse. Can be reversed for a long time)

Installation method: 4 3mm copper pillars

Wiring method: Wiring terminals (please use high current pure copper wire)

Output power:=input voltage * 20A, for example: input 12V * 20A=240W, the power at input 12V is 240W

Input voltage * 20A, for example: Input 24V * 20A=480W, that is, when inputting 24V, the power is 480W

Attention: When inputting 12V, the power is 240W, when inputting 24V, the power is 480W, and when inputting 36V, the power is 720W

The power supply material is very strong. The input uses 4 63V/470UF high-frequency low resistance electrolytic capacitors, and the output uses 3 100V/470UF electrolytic capacitors. The 33MM high-power iron silicon aluminum magnetic ring is wound with three 1.2MM pure copper wires in parallel to prevent overheating magnetic saturation under high current conditions. Use a 116MM * 58MM * 14MM aluminum heat sink to dissipate heat. And the heat sink has 5015 fan (5MM * 5MM * 15mM) installation holes; The output voltage and current of the imported power management chip are continuously adjustable. More importantly, the price is not expensive.

Output voltage/output current regulation/input low battery protection regulation:

Voltage regulation: When the power is turned on and unloaded, use a flat screwdriver to adjust the output terminal "V-ADJ" potentiometer (as indicated in the figure above) clockwise to increase and counterclockwise to decrease. Due to the large output capacitor capacity, the response will be slower when adjusting the output voltage from high voltage to low voltage. The amplitude of the instrument adjustment is smaller.

Current regulation: Turn the "A-ADJ" potentiometer counterclockwise for about 30 turns, set the output current to low, connect the LED, and turn the "A-ADJ" potentiometer clockwise to the current you need. For battery charging, after discharging the battery, connect it to the output and adjust RV2 to the current you need. When charging, be sure to use the discharged battery for accurate adjustment, because the more remaining battery power, the lower the charging current.

Special attention should be paid: do not adjust the current by short circuit output, and the circuit structure of the boost module cannot be adjusted by short circuit,

Input low battery protection adjustment: Low battery protection is mainly aimed at preventing the battery from being over discharged when the input power supply is a battery. If the battery voltage is too low, it can damage the power module and battery. For example, setting low battery protection for 12V batteries. Connect a 10V voltage to the input terminal of the power module and use a flat screwdriver to adjust RV1 (increase the clockwise protection voltage and decrease the counterclockwise protection voltage) until the UVLO light is on. At this time, the low battery protection voltage is 10V. When the battery voltage drops to 10V, the power module does not rise (the input voltage is equal to the output voltage)

When using a boost power supply, the following points should be noted:

The voltage of the input power supply must be above 10V

When using a switching power supply as the input power supply, connect the input power supply with no load and adjust the voltage. Then go and connect the load. (It is necessary to ensure that the switch power supply is always working), or adjust the voltage without load first, then disconnect the switch power supply and connect the load. Connect the switch power supply and power module with the switch power on. Because the switching power supply has a ramp up time when turned on. When the voltage is below 10V, the chip is not yet working. It is easy to break down the MOSFET.

When used in constant current mode, it is necessary to ensure that the constant voltage must be higher than the input voltage. (For example, when the input voltage of the power supply is 12V and the no-load output voltage is 15V, connect a 3.2V LED light. This situation is not allowed. It is recommended to connect at least 4 LED lights in series.)

Application scope:

1. DIY is a regulated power supply that can input 12V and output adjustable from 12-80V.

2. To power your electronic devices, you can set the output value according to your system voltage.

3. As a car power supply, it can power your laptop, PDA, or various digital products.

4. DIY a high-power laptop mobile power supply: paired with a large capacity 12V lithium battery pack, your laptop can light up wherever you go.

5. Solar panel voltage stabilization.

6. Charge batteries, lithium batteries, etc.

7. Drive high-power LED lights.