基于NCL30001設(shè)計的90W LED驅(qū)動技術(shù)

The NCL30001 is a highly integrated controller for implementing power factor correction (PFC) and isolated step down ac?dc power conversion in a single stage, resulting in a lower cost and reduced part count solution. This controller is ideal for LED Driver power supplies with power requirements between 40 W and 150 W. The single stage is based on the flyback converter and it is designed to operate in continuous conduction (CCM).

The NCL30001 can be configured as as constant current driver or a fixed output driver for two stage LED lighting applications. In addition, the controller features a proprietary Soft?Skip??to reduce acoustic noise at light loads. Other features found in the NCL30001

include a high voltage startup circuit, voltage feedforward, brown out detector, internal overload timer, latch input and a high accuracy multiplier. The multi?function latch off pin can also be used to implement an overtemperature shutdown circuit.

NCL30001主要特性：

??Voltage Feedforward Improves Loop Response

??Frequency Jittering Reduces EMI Signature

??Proprietary Soft?Skip at Light Loads Reduces Acoustic Noise

??Brown Out Detector

??Internal 160 ms Fault Timer

??Independent Latch?Off Input Facilitates Implementation of Overvoltage and Overtemperature Fault Detectors

??Average Current Mode Control (ACMC), Fixed Frequency Operation

??High Accuracy Multiplier Reduces Input Line Harmonics

??Adjustable Operating Frequency from 20 kHz to 250 kHz

??These Devices are Pb?Free and are RoHS Compliant

NCL30001典型應用：

??LED Street Lights

??Low Bay LED Lighting

??High Power LED Drivers

??Architectural LED Lighting

圖1。NCL30001詳細方框圖

圖2。NCL30001典型應用電路

NCL30001LEDGEVB評估板:80W 0.9PF CC LED驅(qū)動器

NCL30001LEDGEVB:80W 0.9PF CC LED DRIVER

The NCL30001LEDGEVB is a power factor corrected isolated single stage LED Driver intended for applications range from 40 - 100W that require a direct constant current output. The board is set up for a nominal current of 1A and a maximum forward voltage of approximately 50 V. The output voltage and current values are user configurable and the maximum voltage can be adjusted up to 1.5A.
The driver is intended for general and architectural LED lighting application such as wall packs, parking structure lighting, and outdoor lighting. The driver can be PWM dimmed from the secondary side. The board is setup to accept 90-265 Vac but with minor component changes it can be used for 277 Vac industrial lighting applications.

圖3。NCL30001LEDGEVB評估板外形圖

圖4。NCL30001LEDGEVB評估板電路圖：90W

圖5。NCL30001LEDGEVB評估板電路圖：50V/1.0A

圖6。NCL30001LEDGEVB評估板電路圖：調(diào)光控制板

NCL30001LEDGEVB評估板材料清單（BOM）：

調(diào)光控制板材料清單（BOM）：