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16-String LED Controller for Large-sized LED Panel Backlight Units

Zephyr Logic, Inc., a local specialty integrated circuit (I.C) manufacturer, has recently released a 16-string LED controller for large-sized LED panel backlight units, becoming one of the globally leading enterprises in the field.

Zephyr Logic’s LED driver IC provides users with a wide array of solutions for them to easily design LED backlight units. The product that supplies 16 channels can control 2% degree of precision between channels. With the built-in function sensoring an optimal voltage, it thus increases the efficiency of its operation. It also supplies various protection circuits including short circuit protection.

Jeong, Jong-cheok, the president of Zephyr Logic, said “We have successfully gained a reputation for reliability among globally leading semiconductor companies through developing a technology preventing blackouts.” “Our highest-class LED drive IC for LED TVs is already designated as “Hi Seoul Brand,” which represents the globally certified product by Seoul City,”
he added.

Zephyr Logic has already developed various flagship items applied with cutting-edge features, such as PWM IC, power-factor compensation control IC, and LED lighting IC in an attempt to actively respond to the latest demands of global trends toward environmentfriendliness and high-efficiency.

He went on to say, “We endlessly make efforts to become a company with top-notch competitiveness, which can play a role as a pioneer in the field of green industry in the future based on our vision “Visionary Leader for a Green Tomorrow.”

Zephyr Logic’s flagship LED Controller ZL1010 is a high performance, high efficiency device for white light emitting diodes (LEDs). It is designed for large sized LCD panels that employ LEDs as the light source. The ZL1010 can control up to 16 high voltage LED strings. Each string current is accurately matched and controlled ensuring even brightness for all LEDs.

The ZL1010 monitors the lowest cathode voltage of the LED strings and generates a feedback signal to an external power supply for a convenient and efficient output control. It offers two dimming control modes to enable a wide variety of applications.

All 16 strings of LED current dimming can be precisely controlled by applying a PWM signal to the DPWM input pin or analog dimming voltage to the ADIM pin. DPWM signal can also be used as an automatic shutdown.

It also offers both open and short LED fault detection circuitry and logic outputs via Fault_OVP and Fault_SVP pins for increased system reliability. Currents up to 300mA for each LED string are supported. Currently, it is actively applied at LED Backlight applications for LCD TV/Monitor, LED general lighting.

● Zephyr Logic, Inc.
6F, Daechi Tower, 413, Yeoksam-ro, Gangnam-gu, Seoul, Korea
Tel:(82-70) 7010-7790
Fax:(82-2) 568-0490

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