DC-DC LTC1871 Booster Power Module with High Power 100W Adjustable Output 3.5-35V Digital Display

1、 Product Introduction:
The display part adopts a more advanced voltmeter microprocessor, and the boost part adopts an imported boost controller from the United States. By utilizing the conduction resistance of the power MOSFET, the current detection resistance is eliminated, greatly improving efficiency, up to 96.4%. Imported high-power and low resistance MOSFETs, with large packaging, high current, and high efficiency substrates, and ultra wide and thickened PCB wiring, are the guarantee of high power, high efficiency, and low temperature rise. Working with an ultra wide voltage range, the output power can reach 128W when the input and output voltages are both above 20V. High frequency, high capacity, and low resistance (low ESR) aluminum electrolytic capacitors are specially designed for long-life switching power supplies, allowing for lower output ripple. The chips used in the module are all imported from the original packaging, with abundant materials and stable performance!
This module was developed by a team of senior engineers from the studio over a period of three months, resulting in a more intelligent, user-friendly, and cost-effective module.
New advantageous features:
1. The onboard LED work indicator light provides a more  working status.
2. One click to switch the digital tube on and off, and one click to switch the measurement of input and output voltage. (The onboard voltage indicator light "IN" lights up to display the input voltage, and "OUT" lights up to display the output voltage).
3. This product is strongly launched with a self calibration function for the voltmeter! Yong will never have the problem of inaccurate voltmeter!
2、 Performance parameters:
1. Input voltage: 3-35V DC (note: if the input voltage is less than 4V, the onboard voltmeter will fail)
2. Input current: 9A (max)
3. Output voltage: 3.5-35V DC (this board is a boost board, and the output voltage should be greater than or equal to the input voltage)
4. Output current: 6A (max)
5. Output power: 75W, (can reach 128W when both input and output voltages are greater than 20V)
6. Conversion efficiency: 96.7% (. high)
7. Output ripple: 24mV (TYP)
8. Range of onboard voltmeter: 4~40V, error+-0.1V
9. Short circuit protection: Yes (limited current 14A). Reminder: When connecting to high-power loads, it is recommended to start the machine first before connecting to the load, as the surge current at the beginning of the machine is prone to current limiting and self-locking protection.
10. Input protection: None (if necessary, please connect a high current diode in series with the input).
11. Length x width x height=67 * 43 * 12mm (excluding copper pillars)
This product has added a dual key combination correction voltage function
The specific methods are as follows:
Output voltage display calibration
Step 1: Adjust the right button to turn on the "OUT" indicator light, and the voltmeter will display the output voltage; Press and hold the right button for more than 2 seconds, then release it. The voltmeter and "OUT" indicator light will flash synchronously, and you will enter the output voltage display calibration mode.
Step 2: Short press (normal speed is sufficient) and right-click once to increase the voltage value by one unit; Short press the left button to decrease the voltage value by one unit; Due to the voltage value of a unit being less than 0.1V, the voltmeter will display as small as 0.1V. Therefore, you need to press the key 1-5 times continuously to see that the voltmeter has changed by 0.1V. The specific number of consecutive presses of the key will determine the voltage change of 0.1V, depending on the current displayed voltage. The higher the current displayed voltage, the fewer times you press it.
Step 3: After adjusting the output voltage, press and hold the right button for more than 2 seconds before releasing it to exit the output voltage display calibration mode. All parameter settings are automatically saved after power failure.
Input voltage display calibration
Step 1: Adjust the right button to turn on the "IN" indicator light, and the voltmeter will display the input voltage; Press and hold the right button for more than 2 seconds, then release it. The voltmeter and "IN" indicator light will flash synchronously, and you will enter the input voltage display calibration mode.
Steps 2 and 3 are consistent with the calibration method for output voltage display.
Note: This product has undergone three or more inspections before shipment, and the voltage display accuracy is guaranteed to be within 0.1V. The calibration function is designed to meet your higher accuracy requirements, so please use it with confidence.
3、 Application scope:
1. DIY is a stable power supply that can input 5V and output 5-35V adjustable.
2. To power your electronic devices, you can set the output value according to your system voltage. For example, a 3.7V lithium battery can be used as a mobile power source by increasing its voltage to 5V, and a 7.4V or 12V battery can be used to power a laptop by increasing its voltage to 19V.
3. As a car power supply, it can power your laptop, PDA, or various digital products.