Point Crystal Technology IIC China Shangxiu LED Street Light Breaking Repair Driver IC

China's "Ten Cities and Ten Thousand Cities" program not only promoted the development of China's local LED industry, but many companies in Taiwan have begun to design LEDs after hearing this news. Dianjing Technology is a Taiwanese LED company. In fact, Dianjing Technology Co., Ltd. was established on December 10, 1996. It is a forward-looking enterprise. It was engaged in the design and manufacture of LED related products, especially the LED constant current drive, before the LED industry started. The design of the solution. Dingjing is also the first driver IC design company in Taiwan to create a world-wide specification. Its target markets include LED display , decoration and lighting.

“In fact, our product line is very extensive. In addition to lighting products, our products also include motor drive, image processing, optoelectronic communication, power management, etc.” Dr. Jin Jiyuan, Chairman of Dianjing Technology Co., Ltd. said, “But should The demand for green environmental protection and energy saving trend, in the fall of 2010, IIC China showcases the new energy-saving LED driver chip and LED display product energy-saving energy-saving scheme. Take the LED constant current driver chip DM13K as an example, The current accuracy of the product is extremely high, and the constant current voltage only needs 0.2V (minimum constant current voltage 0.2V@40mA), which can greatly reduce the energy consumption of the LED display."

In addition, the DM13K features: 16-channel output current is 2-40mA; current difference is +_1% between channels, +_1% between chips; 8 bit overall brightness adjustment; maximum clock frequency is 40MHz (10 IC-level Union); built-in LED open short-circuit real-time detection function; over-temperature power-off protection function (>180 ° C); 16 channels time-sharing.

For LED light strings, how to overcome the failure of the LED light string caused by the damage of a few LED lights is a big problem for designers. In response to this, Dianjing Technology has introduced LED street light break repair driver, namely DR164 and DR264, which are suitable for LED light strings. When the LED is disconnected, the LED string can be guaranteed to work normally. The DR164 is a one-stage bypass repair chip with a maximum bypass current of 1A. The chip has reverse power protection and the maximum reverse protection current can be up to 1A@T0-252 or 400mA@S0T-23. The DR264 is a two-stage bypass repair chip. The biggest difference from the DR164 is that the single-stage bypass voltage drop is only 0.2V@1A.

According to Chen Kuijun, design engineer of dot crystal technology IC, as a new generation of LED light string module energy-saving protection chip DR264, not only can solve the problem of LED light string open circuit, due to further energy-saving design, when the chip starts, it can also reduce the protected LED The voltage across the board greatly reduces the power consumption on the chip.

The DR264 has low power consumption, and the current consumed by the chip before bypassing is extremely small, but the bypass current capability can be as high as 1 amp when bypassed. Its single-section voltage protection range is from 2 volts to 4 volts, so it can be applied to various Vt LED lighting and decorative lighting on the market.

Currently, the DR264 package is available in SOT-23 SMD and TO-252 plug-in versions for easy use with different LED module systems. The single chip can support the protection of two consecutive LED strings, which can reduce the layout complexity and reduce the use of the protection chip, thereby reducing the overall system cost.

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