ماژول رگولاتور DC به DC کاهنده / افزاینده 2 آمپر دارای خروجی های 3.3V / 15V / 20V

In particular on the load measurement 15V and 20V (polarization supply) voltage same: The power module uses advanced intelligent servo technology polarization voltage, no load (when not connected tuner) measurement is not the actual load a voltage of about 15V there 19V, but this will not have any effect on the machine, it will not burn the motherboard. 3.3V power supply only of the actual board, so do not question the voltage of this product, please rest assured installation.

DC-Dc power supply board is a DC power conversion module, the 6 ~ 12V input is converted into three groups 3.3V 15V 20V output, supply the necessary equipment, the main purpose: the transformation of DC power supply set-top boxes, Satellite Finder, automotive onboard satellite equipment, remote area solar power , no electricity nomads region ... anywhere in the world has its existence.

Specifications:
Operating voltage: 6 ~ 12V 1A above
Output: 3.3V 2A /  15V  500mA / 20V 500mA 
Short circuit protection: Short circuit instantaneous 3.3V, the input is automatically blocked and limiting, limiting (500mA), self-healing ; 15V / 20V or short circuit 1S automatically cut off the output current exceeds 700mA 10S, the buzzer alarm at the same time

Precautions:
1. Please note that the power supply wiring and load polarity, good insulation measures test, check and correct after the power to prevent burn-in or burn plate, soldering iron must be grounded, otherwise there is a breakdown of the chip may;
2. Enter the power supply wiring should be as short and thick, this can reduce line losses, improve efficiency maximize battery;
3. soldering iron must be grounded, this module is MOS chips, extremely sensitive to static electricity, do not easily work hand touch chip to prevent breakdown scrapped;
4. Although this module fever small, please note that the cooling operation, increase the heat sink if a large current (3A) use;
5. short circuit alarm: LNB protection current domain setting valve is relatively large, some lithium batteries may short circuit to the antenna LNB protective power, resulting in overall power outage or no alarm, no need to worry this is normal.
6. LNB voltage: 15V, 20V is smart polarization current identity design, designed to power antenna LNB, please do not take other loads. The output voltage of the two groups are 20V, after access to the load voltage according to the polarization state board load output nominal value.
7. OUT voltage: OUT input and output power is filtered, and the power input is straight through, no regulation, namely how much battery input V OUT output is the number of volts , the main purpose of this group is connected to the liquid crystal, battery indicator, amplifiers and other output , equivalent to the battery voltage out of parallel sub-line group.
8. Reconstruction DC 2 A: Because synchronous rectification will cause the boost current intrusion must be 3.3V, 15V, 20V are coupled Jiaxiaoteji diode isolation, otherwise it will affect the voltage intelligent switching, severe damage to the power board.