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Development Trend of DoB High Voltage Linearly Driving IC

1 What is the DoB (Driver on Board) IC ("remove" powering) solution

Dob led driver is what we usually call "remove" power. It is not a power supply, but a new driving method that is different from the traditional switching power supply. It is a new driving method based on LED characteristics. . The DoB IC solution has many pioneers in the industry. There are mainly Seoul Semiconductor, UK LynkLabs, Texas Instruments, Exclara, Taiwan Industrial Technology Research Institute, Interlight and other giants. The domestic start is relatively late, due to China's insufficient R&D reserves and slow response. However, the domestic development is rapid, and now a group of companies have followed suit and developed DoB IC. However, the industry's rejection of "no power" products, especially by traditional power supply manufacturers, has even hampered the development of this innovative new technology.

2 DoB IC solution is the future development of LED lighting driver from three aspects: 1 standardization, scale, automation, traditional power supply devices, large volume, complex processing, inconvenience to standardization, automation, and large-scale production, according to Incomplete statistics, there are currently no less than 20,000 LED lighting manufacturers in China. I believe that in the next 5-10 years, there will be more than a thousand companies. To survive in this cruel competition, to improve production efficiency and speed up automation will be the only way. If you rely on traditional power supplies, you will face great challenges. 2 Stability Due to the many components of the traditional power supply, the bad factor naturally increases. In particular, the lifetime problem of electrolytic capacitors directly leads to an increased probability of LED lamp failure. Although in the DoB IC driver, in order to eliminate the power frequency strobe of 100HZ, capacitors are used in the valley filling, but these capacitors are essentially different from the capacitors of the conventional power source in specific applications. On the other hand, a capacitor failure in a linear valley fill does not result in a dead light. The failure of the capacitor in the conventional power supply directly leads to a dead light. 3 Intelligent lighting In terms of intelligent lighting, linear IC driving has its inherent advantages compared to traditional switching power supply drivers. Traditional power supplies can also achieve smart lighting, but the cost or system integration costs far more than linear. Combining the above, let's look at this table. Regardless of stability, safety, performance parameters and high cost.


1. standardization, scale, automation, traditional power supply devices, large volume, complex processing, inconvenience to standardization, automation, and large-scale production, according to Incomplete statistics, there are currently no less than 20,000 LED lighting manufacturers in China. I believe that in the next 5-10 years, there will be more than a thousand companies. To survive in this cruel competition, to improve production efficiency and speed up automation will be the only way. If you rely on traditional power supplies, you will face great challenges.


2 Stability Due to the many components of the traditional power supply, the bad factor naturally increases. In particular, the lifetime problem of electrolytic capacitors directly leads to an increased probability of LED lamp failure. Although in the DoB IC driver, in order to eliminate the power frequency strobe of 100HZ, capacitors are used in the valley filling, but these capacitors are essentially different from the capacitors of the conventional power source in specific applications. On the other hand, a capacitor failure in a linear valley fill does not result in a dead light. The failure of the capacitor in the conventional power supply directly leads to a dead light.
3 Intelligent lighting In terms of intelligent lighting, linear IC driving has its inherent advantages compared to traditional switching power supply drivers. Traditional power supplies can also achieve smart lighting, but the cost or system integration costs far more than linear. Combining the above, let's look at this table. Regardless of stability, safety, performance parameters and high cost, dob led driver is a cost-effective LED driver solution.

3 At present, there are four major problems in the problem of DoB IC.
1) Low lamp utilization and low efficiency
2) The narrow operating voltage range caused by the difference in linear adjustment rate, difficulty in heat dissipation, flashover, etc.
3) 100HZ power frequency strobe
4) Single IC drive power is small, up to 9W

If we do not fundamentally solve the core problems mentioned above, it is difficult to say that the DoB IC driver solution is the future of LED drivers.

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