In the international lighting industry, the smart lighting market is heating up rapidly. In keeping with the traditional lighting system luminaire architecture, LED driver and packaging technology revolutions for smart lighting have already begun. Due to the extremely limited design space of intelligent lighting system boards, LED drivers and packaging companies are accelerating the development of integrated driver circuits and LED light source optoelectronic integration solutions, as well as new packaging technologies such as DOB (Driver on Board) and COB (Chip on Board).
DOB technology selling point and inherent defects "DOB refers to the solution that the driver chip is directly mounted on the heat sink substrate", and Mr Edward Chang, senior manager of Infineon Taiwan Technology Co., Ltd., told reporters.
He pointed out that many LED packaging companies are currently studying this technical solution, but basically there are only two ways to do this: the LED driver's switch is in an ultra-high switching frequency state, or there is no switch state. The latter solution is relatively mature and can be used as an AC-driven LED linear driver. â€
At the same time, he said that the main selling point of this integrated circuit IC is that there is no need for electrolytic capacitors, but there are inevitably some defects, such as:
- Low frequency 100Hz/120Hz flashing. All LEDs are turned off at zero crossings of the AC line voltage, which results in very poor "light quality." Studies have shown that it can cause headaches or eye strain.
- The input power varies greatly. Due to the "linear" control, the current through the LED will vary depending on the AC line voltage. Higher AC line voltages will result in higher LED currents, so the LED driver will have to withstand more thermal energy, which means that the brightness will also change.
- Overdrive LEDs. In order to achieve the same light output as a DC-driven LED driver, this requires more LEDs (higher cost) or over-driving LEDs (low efficacy and low reliability).
Mr Edward Chang pointed out that there are many IC manufacturers on the market that can provide similar solutions. Although some companies are trying to solve the problems mentioned above, there are still some side effects. He said that the trend in the market today is to shift from B2C to B2B and commercial lighting, and usually has certain requirements for "light quality".
Digital dimming technology into a new battlefield <br> <br> intelligent LED lighting not only affects the driver architecture changes, will also promote new circuit layout and dimming (Dimming), emerging technology, enabling more convenient and cost-digit Control plan. Some insiders expect that the next 1-2 years will be the key period for LED lighting to move towards digital dimming. The related LED driver chips and system solutions are expected to be released in large quantities, becoming a new technical battleground for supply chain operators.
It is understood that the digital lighting controller product line will solve many common problems faced by LED lighting, such as 100Hz/120Hz low frequency flicker related to light quality, dimmer compatibility, current accuracy under different line voltages and load conditions, and Different bins of LEDs, etc.
Flexible choice of different control schemes, parameters and protocols can further improve energy efficiency. This allows artificial light to be coordinated with environmental changes from dawn to night and from spring to winter. In this way, people can use mobile terminals such as smartphones and tablets to control the brightness and color temperature of LEDs at will, and create different atmospheres by changing the color of light. In addition, the bright lights can bring people a sense of security in the dark. Infineon's digital lighting controllers are designed to support intelligent lighting control solutions by connecting external microcontroller interfaces, such as ambient light sensing, enhanced dimming with daylight, and color temperature adjustment.
According to Mr Edward Chang, at the recent Frankfurt show, Infineon has successfully demonstrated the next generation of digital power products and high-power LED systems. Infineon's next-generation AC/DC digital power products provide excellent current accuracy for LEDs, meeting 1-10V dimming over a wide range of input and output voltages without secondary feedback.
Infineon's DC/DC LED driver ILD6070/6150 offers a unique thermal management function that allows the customer to freely set an overtemperature protection trip point with a resistor. In light management, Infineon introduced the ARM-based Coretex-M0 XMC1000 series, including a dedicated BCCU, brightness and color control unit to provide customers with PDM (Pulse Density Modulation) patented "Flicker-free" dimming control and The "color linear gradient" of the brilliant color mixing, while the 24GHz radar sensor provides customers with large-area and long-range coverage applications, such as high-bay or outdoor street lights.
Mr Edward Chang also mentioned: “Intelligent lighting is part of the Internet of Things wave and cloud computing. Network security should be one of the most important issues. Infineon’s OPTIGA Secure Microcontroller is an expert in ensuring network security.
LED driver heading towards cost-driven field <br> <br> With rising power LED light source, end-product prices continued to decline, LED driver IC accounted for the proportion of the overall lighting costs more and more to highlight, chip makers compete to develop higher overweight A linear drive solution with integratedness to meet system manufacturers' reduced bill of materials (BOM) cost requirements.
"On the one hand, LED drivers are moving in a smarter direction; on the other hand, LED drivers are moving into cost-driven applications such as the reloading market," Mr Edward Chang told reporters.
Mr Edward Chang said that costs may come from different sources. For example, LED products are increasingly focusing on the protection of surge voltages. Customers can decide if they are willing to spend money on surge protection devices or power supplies with surge protection and more added value, or to improve reliability. In addition, Infineon's next-generation digital power products will help customers not only reduce their BOM costs, but also save their development costs and inventory management costs.
Talking about the future product development direction of Infineon, Mr Edward Chang told reporters that energy-saving lighting is a new blue ocean for LED driver ICs and smart LED lighting. In order to achieve the goal of energy-saving lighting, a lot of work needs to be done, and LED drivers are among them. a part of. Infineon's product roadmap for the next five years is the next generation of power semiconductor technology with LED driver ICs. Infineon will not only innovate from the design and concept of LED driver ICs, but also innovate from the product line. Infineon expects more complete technologies and products to cover the entire lighting market application.
DOB technology selling point and inherent defects "DOB refers to the solution that the driver chip is directly mounted on the heat sink substrate", and Mr Edward Chang, senior manager of Infineon Taiwan Technology Co., Ltd., told reporters.
He pointed out that many LED packaging companies are currently studying this technical solution, but basically there are only two ways to do this: the LED driver's switch is in an ultra-high switching frequency state, or there is no switch state. The latter solution is relatively mature and can be used as an AC-driven LED linear driver. â€
At the same time, he said that the main selling point of this integrated circuit IC is that there is no need for electrolytic capacitors, but there are inevitably some defects, such as:
- Low frequency 100Hz/120Hz flashing. All LEDs are turned off at zero crossings of the AC line voltage, which results in very poor "light quality." Studies have shown that it can cause headaches or eye strain.
- The input power varies greatly. Due to the "linear" control, the current through the LED will vary depending on the AC line voltage. Higher AC line voltages will result in higher LED currents, so the LED driver will have to withstand more thermal energy, which means that the brightness will also change.
- Overdrive LEDs. In order to achieve the same light output as a DC-driven LED driver, this requires more LEDs (higher cost) or over-driving LEDs (low efficacy and low reliability).
Mr Edward Chang pointed out that there are many IC manufacturers on the market that can provide similar solutions. Although some companies are trying to solve the problems mentioned above, there are still some side effects. He said that the trend in the market today is to shift from B2C to B2B and commercial lighting, and usually has certain requirements for "light quality".
Digital dimming technology into a new battlefield <br> <br> intelligent LED lighting not only affects the driver architecture changes, will also promote new circuit layout and dimming (Dimming), emerging technology, enabling more convenient and cost-digit Control plan. Some insiders expect that the next 1-2 years will be the key period for LED lighting to move towards digital dimming. The related LED driver chips and system solutions are expected to be released in large quantities, becoming a new technical battleground for supply chain operators.
It is understood that the digital lighting controller product line will solve many common problems faced by LED lighting, such as 100Hz/120Hz low frequency flicker related to light quality, dimmer compatibility, current accuracy under different line voltages and load conditions, and Different bins of LEDs, etc.
Flexible choice of different control schemes, parameters and protocols can further improve energy efficiency. This allows artificial light to be coordinated with environmental changes from dawn to night and from spring to winter. In this way, people can use mobile terminals such as smartphones and tablets to control the brightness and color temperature of LEDs at will, and create different atmospheres by changing the color of light. In addition, the bright lights can bring people a sense of security in the dark. Infineon's digital lighting controllers are designed to support intelligent lighting control solutions by connecting external microcontroller interfaces, such as ambient light sensing, enhanced dimming with daylight, and color temperature adjustment.
According to Mr Edward Chang, at the recent Frankfurt show, Infineon has successfully demonstrated the next generation of digital power products and high-power LED systems. Infineon's next-generation AC/DC digital power products provide excellent current accuracy for LEDs, meeting 1-10V dimming over a wide range of input and output voltages without secondary feedback.
Infineon's DC/DC LED driver ILD6070/6150 offers a unique thermal management function that allows the customer to freely set an overtemperature protection trip point with a resistor. In light management, Infineon introduced the ARM-based Coretex-M0 XMC1000 series, including a dedicated BCCU, brightness and color control unit to provide customers with PDM (Pulse Density Modulation) patented "Flicker-free" dimming control and The "color linear gradient" of the brilliant color mixing, while the 24GHz radar sensor provides customers with large-area and long-range coverage applications, such as high-bay or outdoor street lights.
Mr Edward Chang also mentioned: “Intelligent lighting is part of the Internet of Things wave and cloud computing. Network security should be one of the most important issues. Infineon’s OPTIGA Secure Microcontroller is an expert in ensuring network security.
LED driver heading towards cost-driven field <br> <br> With rising power LED light source, end-product prices continued to decline, LED driver IC accounted for the proportion of the overall lighting costs more and more to highlight, chip makers compete to develop higher overweight A linear drive solution with integratedness to meet system manufacturers' reduced bill of materials (BOM) cost requirements.
"On the one hand, LED drivers are moving in a smarter direction; on the other hand, LED drivers are moving into cost-driven applications such as the reloading market," Mr Edward Chang told reporters.
Mr Edward Chang said that costs may come from different sources. For example, LED products are increasingly focusing on the protection of surge voltages. Customers can decide if they are willing to spend money on surge protection devices or power supplies with surge protection and more added value, or to improve reliability. In addition, Infineon's next-generation digital power products will help customers not only reduce their BOM costs, but also save their development costs and inventory management costs.
Talking about the future product development direction of Infineon, Mr Edward Chang told reporters that energy-saving lighting is a new blue ocean for LED driver ICs and smart LED lighting. In order to achieve the goal of energy-saving lighting, a lot of work needs to be done, and LED drivers are among them. a part of. Infineon's product roadmap for the next five years is the next generation of power semiconductor technology with LED driver ICs. Infineon will not only innovate from the design and concept of LED driver ICs, but also innovate from the product line. Infineon expects more complete technologies and products to cover the entire lighting market application.
Introduction
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