New product release | SCT2A00/SCT2A12 ultra-low quiescent current allows the battery protection board to last longer
In order to pursue the ultimate efficiency and battery life, the important selling point of low standby current requires finding the best combination of software and hardware solutions. Choosing a better power management chip can reduce the power consumption of electronic devices in standby mode, thus extending the standby time.
In high-series battery applications, such as energy storage BMS protection boards, electric two-wheeled vehicle BMS protection boards, electric moped instrument panels , etc., an ultra-low quiescent current DC-DC converter is required to generate 5V/12V to ensure The system has a lower standby current when in sleep mode.
BMS protection board power supply solution
Since there is a long standby process in the actual application scenarios of lithium batteries, if the standby current is too large, the standby time will be shortened, causing the lithium battery to be over-discharged and unable to work normally, and needs to be reactivated. Therefore, in the application of lithium battery protection boards, there are strict requirements for the quiescent current of the primary DC-DC converter . Generally, the standby current of the system during sleep is required to be <100uA.
Product advantages
As far as the DC-DC converter chip is concerned, to achieve this system index, we must focus on two performance indicators of the converter chip: power consumption of the logic part and circuit power consumption of the power part . As shown below:
Chip internal block diagram: logic part circuit and power part circuit
1. Logic part power consumption, that is, the power consumption generated by the current (non-switching part) of the converter chip's own logic circuit operation. This is what we usually call the quiescent current during Non-switching. This is usually marked on the chip, as shown in the figure below.
This part of the power consumption depends on the design of the chip. Different chips vary greatly, which will ultimately affect the actual standby current of the system. The test method is to see the actual input current when the test board output is set to no-load.
Xinzhou Technology’s latest 100V/0.6A and 100V / 1A buck converter SCT2A00/
SCT2A12 specifically solves the problem of standby power consumption in battery protection board applications , and its ultra-low quiescent current is at the leading level in the industry.
SCT2A00 Evaluation Board
Input current test when 48V input-12V no-load output
The chip optimizes the no-load/light-load working part, so that when the chip is completely no-loaded from 48V input to 12V output, the input current is only 65uA . Excluding the logic circuit power consumption, only 16uA of switching circuit loss is added.
At the same time, 2A00/2A12 also has very
high light load efficiency
, which can reduce system operating losses. As shown in the figure below, at 48V input and 12V/1mA output, the efficiency can reach 74%. At 100mA output, the efficiency can reach
90%
.
product details
More applications
In addition to battery pack protection boards, SCT2A00/SCT2A12 can also be used in electric two-wheeled vehicle electronic control panels, instrument panels, garden tools, PoE power supply, solar photovoltaic optimizers and other applications.
Electric vehicle control panel power supply solution
Solar PV Optimizer
Application sample test
SCT2A00/SCT2A12 will be mass-produced soon. Sample testing can be provided if necessary. To apply for samples or order, please contact sales (follow the official account and get the sales contact information in the menu bar), or email: sales@silicontent.com.
New products in 2023
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