Products, Materials & Tools | Dec 19, 2014

ON Semiconductor Extends NCL300xx Series LED Driver Range

ON Semiconductor, driving energy efficient innovations, announces two new series of power factor corrected (PFC) offline Ac-Dc drivers for high performance LED lighting applications. Extending the NCL3008x family of products, the NCL30085, NCL30086 and NCL30088 address single stage design implementations up to 60 W that require high power factor. The NCL30030 broadens the existing solutions which support higher power (up to 150 W) two stage topologies that require low optical ripple and wide LED forward voltage variation.

Common General Features:
• Wide VCC Range from 9 V to 30 V with Built−in Overvoltage Protection
• High−Voltage Startup Circuit
• Integrated High−Voltage Brown−Out Detector
• Fault Input for Severe Fault Conditions, NTC Compatible (Latch and Auto−Recovery Options)
• 0.5 A / 0.8 A Source / Sink Gate Drivers
• Internal Temperature Shutdown

PFC Controller Features:
• Critical Conduction Mode with a Multiplier
• Accurate Overvoltage Protection
• Optional Bi−Level Line−Dependent Output Voltage (2:1 / 1.77:1 Versions)
• Fast Line / Load Transient Compensation
• Boost Diode Short−Circuit Protection
• Feed−Forward for Improved Operation across Line and Load
• Adjustable PFC Disable Threshold Based on Output Power

QR Flyback Controller Features:
• Valley Switching Operation with Valley−Lockout for Noise−Free Operation
• Frequency Foldback with Minimum Frequency Clamp for Highest Performance in Standby Mode
• Minimum Frequency Clamp Eliminates Audible Noise
• Timer−Based Overload Protection (Latched or Auto−Recovery options)
• Adjustable Overpower Protection
• Winding and Output Diode Short−Circuit Protection
• 4 ms Soft−Start Timer
• These are Pb−Free Devices

Typical Applications:
• High Power LED Drivers
• Commercial LED ballasts
• LED Signage Power Supplies
• Adapters
• Open Frame Power Supplies
• LED Electronic Control Gear

The NCL30085, NCL30086 and NCL30088 utilize a power factor corrected current control algorithm which makes them suitable for flyback buck-boost, and SEPIC topologies. By operating in quasi-resonant mode these devices are able to deliver optimum efficiency across wide line and load levels. The innovative control methodology they employ allows strict current regulation to be achieved (within 2 percent typically) solely from the primary side.

The non-dimmable NCL30088 is complemented by the NCL30086, which is ‘smart-dimmable,’ supporting analog and/or pulse-width modulation (PWM) dimming with a single input that controls the average LED current. Completing the series is the NCL30085 which supports three levels of log step dimming (70 percent, 25 percent and 5 percent). As a consequence, it permits light output reduction by toggling the AC switch on/off to signal the controller to lower the LED current point. All three devices feature user configurable current thermal fold-back mechanisms that help prevent overheating and enable manufacturers to support longer lifetim}e warranties.

The NCL30085 and NCL30088 are offered in SOIC-8 packages, while the NCL30086 is offered in SOIC-10 package with pricing of the series starting at $0.35 per unit in 10,000 unit quantities.

The device is a two stage PFC controller plus quasi-resonant flyback controller optimized for medium and high power LED lighting applications up to 150 W. This device is best suited for commercial lighting such as lowbay, highbay and streetlighting. The NCL30030 makes use of a proprietary multiplier architecture to achieve low harmonic distortion and near-unity power factor while operating in critical conduction mode (CrM).

The NCL30030 is in an SOIC-16 package with 1 pin removed for high voltage spacing and pricing starts at $0.65 per unit in 10,000 unit quantities.


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