LED linear drive technology is a new generation of power technology, no high-frequency switching action, so there is no hidden worry of EMC; can also save the magnetic components such as transformers, some applications can also save electrolytic capacitors, achieve high PF, low harmonics . Considering power consumption, the main difficulty of IC now is how to achieve a wider input voltage and achieve high efficiency.
Nevertheless, in areas where the grid is relatively stable, single-stage control has its low-cost and high-performance advantages, and it has gained a large application, covering bulb lamps, filament lamps, and thyristor dimming.
However, the prior art linear thyristor dimming scheme has the following two problems:
1. The efficiency is low, causing the temperature of the whole lamp to be high. In order to solve this problem, additional heat treatment (such as potting) is needed;
2. The brightness of the whole lamp will change when the line voltage fluctuates.
In view of the shortcomings of the existing linear thyristor dimming solution, Shenzhen Mingwei Electronics Co., Ltd. (hereinafter referred to as “Mingwei Electronicsâ€) successfully completed the research and development of the high-efficiency thyristor dimming series SM2082EK, SM2196E, SM2396E Solved the above problem.
It is understood that the core of the technology lies in the patented linear thyristor dimming control technology to realize on-line detection of thyristors and improve the efficiency of the system. At the same time, the patented wire mesh compensation technology is used to achieve the effect of constant light through the whole lamp within a certain voltage range.
High efficiency thyristor dimming series
This product uses the unique technology to fundamentally make up for the shortcomings of the existing linear thyristor dimming solution and enhance the market competitiveness of the product:
1, using thyristor control, compatible with traditional lines, easy to replace and promote;
2. The patented thyristor dimming control circuit improves the efficiency and light efficiency of the system, reduces the system temperature under the same optical flux requirements, and improves the reliability of the system;
3, the linear scheme peripheral circuit is simple, the customer is more convenient to use, low cost, especially suitable for small-volume, narrow-space products;
4. Compatible with 120Vac@60Hz /230Vac@50Hz dimmer.
Once the Mingwei electronic linear thyristor dimming solution was introduced to the market, it was highly recognized by many customers. The customer gave wide acclaim to the product:
1: This series of products has changed the traditional concept of low dimming efficiency of linear products, and the conversion efficiency can be even higher than the shoulder switching Power Supply;
2: This series of products solves the change of the brightness of the lamp caused by the fluctuation of the net network;
3: The peripheral circuit of this series of products is simple, especially suitable for products with limited space (such as filament lamp, GU10, spotlight, etc.);
4: The series of products are flexible in application, and the power of a single chip can be adjusted by an external resistor to support the parallel expansion of the power of the chip;
5: This series of products has intelligent temperature compensation characteristics, which can adjust the circuit with temperature changes and improve reliability;
6: This series of products can be shared with the lamp beads, and the integration is high, which can realize integrated production.
Based on the technological leadership and strong market competitiveness of the high-efficiency thyristor dimming series, Mingwei Electronics decided to bring this product to the “Innovation Product of the Year†in the “2017 (8th) High-tech LED Golden Globe Awardsâ€.
About Mingwei Electronics
Founded in October 2003, Shenzhen Mingwei Electronics Co., Ltd. is a state-level high-tech enterprise specializing in integrated circuit design, commissioning and sales. It is located in the national high-tech zone-Shenzhen High-tech Industrial Park South Zone.
Since its establishment, the company has focused on the development of driver chips such as LED display, LED lighting and power management, and LED landscape lighting. It has gathered a vigorous, proactive and innovative R&D and management team. Most of its engineers and technicians have more than 10 years of experience in the integrated circuit industry. At present, the company has a municipal engineering technology center, a provincial production and research base and a national integrated circuit design center, and introduced advanced chip design front-end analysis equipment EMMI, X-Ray, LC liquid crystal hot spot detection, FIB focused ions, Probe, ESD-TEST, etc., these hardware facilities provide designers with extremely convenient conditions for efficient chip failure analysis, effectively shortening the company's chip development cycle.
After many years of accumulation and precipitation, the company has nearly 100 patents in IC design high-voltage ESD technology, high-precision constant current technology, high-voltage start-up technology, ultra-low standby power consumption technology, SPWM/PWM/PFM technology. Power supply EMC, EMI, high-voltage EFT, UL, 3C, "Energy Star" certification, and reliability and stability of power supply, accumulated a wealth of experience, and received high praise and trust from customers.
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