NCL30095数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The NCL30095A high power factor boost PWM switching regulator is designed to regulate the average current through a string of LEDs. The circuit operates in Critical Conduction Mode (CrM) based on a proven constant on-time control scheme to achieve near unity power factor.In addition to regulating a constant current, the switching regulator is optimized to support leading and trailing edge phase dimming applications.When a dimmer is detected on the AC input, an internal voltage reference of the current regulation loop adjusts the current level based on the dimmer conduction angle so the current through the LED string has a desired value based on a programmed dimming curve. The shape of the dimming curve is intended to emulate the response of an incandescent bulb while achieving NEMA SSL6 and NEMA SSL7A recommendations. An integrated HV MOSFET in a cascoded configuration supports biasing the controller during operation and eliminates the need for an auxiliary winding to provide bias power. A robust suite of protection features are included to ensure proper handling of expected fault conditions without the need for extra circuitry and a dedicated thermal fold-back input proves gradually reduction of the current above a user defined set-point.

特性 Features

• Near-unity Power Factor
• Exceeds industry requirements for lighting
• Critical conduction Mode (CrM)
• Improves overall efficiency
• Constant on-time control
• Near ideal power factor
• Accurate current regulation (+/- 2% typical)
• No need for binning of LEDs or production trimming for accuracy
• Compatible with leading and trailing edge phase controlled dimmers
• Stable operation with all types of TRIAC line dimmers
• Cascoded configuration
• Fast startup time (
• Open and Shorted LED/Output Diode Protection
• Enhanced fault handling
• User programmable thermal current fold-back
• Protects LED driver from overheating under severe conditions
• Cycle- by- cycle current limiting
• Robust fault handling
• Wide Temperature range of -40 to 125 °C
• Suports outdoor and high temperature environments
• Integrated HV MOSFET

应用 Application

• Integrated LED Drive Electronics
• LED Bulbs
• LED Downlights
• LED Light Engines
• LED Modules

简介

NCL30095属于集成电路（IC）的LED驱动器。由制造生产的NCL30095LED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。