Condition:New
Type:Logic ICs
Model Number:Boost output
If you use industrial computer motherboards or desktop motherboards for rugged computers, portable computers, or embedded devices, and you need to install batteries for mobile use, then there is a problem that cannot be avoided. It is the problem of the voltage and power collection and display of the lithium battery. Since desktop computers have no I2C interface, and ordinary lithium battery protection boards have no USB interface, how to display the remaining power of the system has always been a problem. The current solutions generally use LED indicator lights or add LED voltage acquisition and display modules. This method is firstly unintuitive, secondly, the accuracy is low, and thirdly, there is no grade. The fourth is the inability to add management functions. This solution perfectly solves the above problems. Call the system power display program.
If it is powered by a battery, there is another problem that cannot be avoided is the one-button boot of the system. If the power button is directly led out, the consequence is that the system battery will be completely drained within one or two days after the power is turned off. Because the motherboard consumes too much power. Therefore, the power supply must be completely disconnected from the motherboard when the system is shut down. This requires a comprehensive takeover of the switch machine circuit. This module completely solves the above problems.
The basic parameters of the circuit board are as follows:
If the battery is 3 strings, the adapter input voltage is 13.5V-24V
The output voltage is adjustable from 12V-24V (the output voltage is a constant voltage mode, that is, the adapter can use a 19V adapter, and the output is 12V constant voltage)
The stable output current is 8A, and the limit is 9.5A. If it exceeds 6A, a fan is required to dissipate heat.
The battery charging method is constant current first, then constant voltage.
Working principle: After pressing the power button, the voltage management board is first powered on to work. After 1 second, the power supply circuit for the motherboard is turned on. At this time, the motherboard is electrified. Then turn on the motherboard power-on button to turn on the motherboard. When the system is shut down, the power board detects that the main board is in the off state, and automatically powers off after a delay of 3 seconds. When it is detected that the motherboard is in a hibernation state, the shutdown operation is not performed. When the power button 5 is pressed for a long time, the power is completely cut off.
The circuit board is equipped with an automatic step-up and step-down module. If the output voltage is set to 12V, when the battery voltage is less than 12V, the voltage will be automatically boosted to 12V, and if the adapter voltage is 19V, the voltage will be automatically stepped down to 12V. The voltage difference between the battery and the adapter is more than 1V. Otherwise, automatic switching cannot be realized or the charging is not full.
The size of the board is 110*65*18. This version is an upgraded version of the smart battery of the DC11065 version. Two parts are upgraded. One is to support smart batteries and display power more accurately, which can be comparable to the power calculation of tablets, smart phones, notebooks and other devices. Accuracy. The second is to upgrade the previous method of displaying the remaining 100% power in the taskbar by installing a self-developed program to directly call the system battery management program to display, which is no different from the display mode of notebooks and tablets. The system supports winxp, win7, win8, win10 and other windows series operating systems. Both 32-bit and 64-bit are compatible. No need to install any driver, the system automatically recognizes it.
The working efficiency of the circuit board is very high, and it is basically the same as the body temperature when the output is below 3A. The efficiency can reach up to 98%, and the efficiency is also above 92% when the power is output.
