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          EEPW首頁 
	 > 工控自動化 > 設計應用 > 基于PS92010設計的高效PWM LED驅動方案
          
    
          

          

          


	
	
	

          
	
          
		
          
			
          基于PS92010設計的高效PWM LED驅動方案
          
						
          
				作者：
				時間：2010-05-20
				來源：網絡
				
				
				
				
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			PS92010是TI 公司的高效PWM控制器，集成了頻率折返和低功耗工作模式，以降低輕負載和無負載時的工作頻率，從而提高LED驅動的效率．主要用在住宅區(qū)LED照明驅動以及各種LED照明．本文介紹了PS92010主要特性，方框圖，開路測試電路，典型應用電路以及離線LED照明驅動模塊TPS92010EVM-592主要特性和電路圖與材料清單．

          The TPS92010 is a PWM controller with advanced energy features to provide high efficiency driving for LED lighting applications.

          The TPS92010 incorporates frequency fold back and low power mode operation to reduce the operation frequency at light load and no load operations.

          The TPS92010 is offered in the 8-pin SOIC (D) package. Operating junction temperature range is C40℃ to 105℃.

          PS92010主要特性：

          LED Lighting Current Driver Controller with Energy Saving Features 

          Quasi-Resonant Mode Operation for Reduced EMI and Low Switching Losses (Low Voltage Switching) 

          Low Standby Current for Deep Dimming Efficiency Power Consumption 

          Low Startup Current: 25 µA Maximum 

          Programmable Line and Load Overvoltage Protection 

          Provides Open LED Protection

          Internal Overtemperature Protection 

          Current Limit Protection 

          Cycle-by-Cycle Power Limit 

          Primary-Side Overcurrent Hiccup Restart Mode 

          1-A Sink TrueDrive, C0.75-A Source Gate Drive Output 

          Programmable Soft-Start 

          PS92010應用： 

          Residential LED Lighting Drivers for A19 E12/E26/27, GU10, MR16, PAR30/38 Integral Lamps 

          Drivers for Wall Sconces, Pathway Lighting and Overhead Lighting 

          Drivers for Wall Washing, Architectural and Display Lighting 


          圖１．PS92010方框圖

          圖２．PS92010開路測試電路

          圖３．PS92010應用電路

          圖４．PS92010 QR檢測詳細電路          
				
            
                
			
								
          pwm相關文章:pwm原理
          

          
							
          
                
			            
          
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