March 6, 2018 – ON Semiconductor (Nasdaq: ON), which promotes energy-efficient innovation, introduces two new LED lighting controller solutions. The dimmable NCL30386 and the non-dimmable NCL30388 provide a market-leading choice for designers of LED lighting equipment such as lamps for office and industrial buildings.
Both devices are high power factor (PF), single-segment, constant current (CC) and constant voltage (CV) for flyback, buck-boost or single-ended primary inductor converter (SEPIC) power supply topologies. Primary Side Regulation (PSR) Pulse Width Modulation (PWM) controller. They operate in a quasi-resonant (QR) mode with energy efficiency levels exceeding those of the European Union's Ecodesign, the US ENERGY STAR® and NEMA SSL.
The integrated digital power factor correction (PFC) algorithm ensures leading market, PF greater than 0.95, and less than 10% total harmonic distortion (THD) over a universal input voltage range. The integrated high-voltage start-up current source ensures fast start-up, low standby power consumption and wide-range output operation. The current and voltage are regulated by a digital PSR CC/CV loop control, typically controlled to within ±2%, providing extremely uniform illumination under all conditions.
These devices are easy to use and operate over a wide voltage (VCC) range of 9.2 - 26 VDC with valley lock and frequency reversal to ensure high efficiency over the entire voltage range. It further simplifies the design of LED lighting applications by including safety features such as undervoltage and overvoltage protection, as well as detecting short circuits in outputs, windings and diodes.
NCL30386 and NCL30388 eliminate the need for many external components to complete the design, reducing time-to-market, reducing bill of materials (BoM) costs, and reducing the space required to achieve a complete lighting solution.
In addition, the NCL30386 offers excellent dimming capabilities, including linear or quadratic dimming curve options. The wide analog dimming range is controlled by two dedicated analog/PWM control pins that enable precise dimming with a minimum dimming ratio of 0.5% and no audible noise.
According to Ryan Zahn, Director of Marketing and Applications, AC-DC Business Unit, ON Semiconductor: “In view of the low energy consumption of LED lighting, its energy-efficient work is to cope with the rising cost of energy and environmental protection factors. Our new solution not only provides Leading the market in energy efficiency also provides designers with a high degree of flexibility and meets and exceeds current energy efficiency standards. The new device's wide range of operation, low standby power consumption and fast start-up simplify the designer's work. In addition, the NCL30386 offers a wide range of very precise dimming controls, making it an ideal solution for smart lighting."
Small computer system interface (SCSI) is an independent processor standard for system level interfaces between computers and intelligent devices (hard disks, floppy drives, optical drives, printers, scanners, etc.). SCSI is an intelligent universal interface standard.
SCSI-3
In 1995, the more high-speed SCSI-3, called ultrasci, was born, and the data transmission rate reached 20MB / s. It increases the synchronous transmission clock frequency to 20MB / s and improves the data transmission rate. If 16 bit wide mode is used, the data transmission rate can be increased to 40MB / s. This version of SCSI uses a 68 pin interface, which is mainly used on hard disks. The typical characteristic of SCSI-3 is that the bus frequency is greatly increased and the signal interference is reduced to enhance its stability.
There are many models of SCSI-3. Ultra (FAST-20) has a transmission frequency of 20MHz, a data bandwidth of 8 bits and a transmission rate of 20MBps
Ultra wide has a transmission frequency of 20MHz, a data bandwidth of 16 bits and a transmission rate of 40mbps
The transmission frequency of ultra 2 is 80 MHz, the data bandwidth is 16 bits, and the transmission rate is 80 Mbps
The transmission frequency of ultra 160 is 80 MHz, the data bandwidth is 16 bits, and the transmission rate is 160 Mbps
The transmission frequency of ultra 320 is 80MHz, the data bandwidth is 16 bits, and the transmission rate is 320mbps
The transmission frequency of ultra 640 is 160MHz, the data bandwidth is 16 bits, and the transmission rate is 640mbps
Plastic SCSI Cover
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