東森微電子快速響應LED市場變化,新推一款Diodes(BCD)的專利脈沖頻率調制技術來嚴格調節LED電流的總線可調光LED燈驅動芯片AP1694.
東森微電子為您提供完善的AP1694A/AP1694M應用解決方案,該AP1694A/AP1694M可提供5%的初始LED電流準確度，有效滿足大多數總線可調光LED照明應用的要求，為多種總線可調光LED燈設計提供高效的通用驅動器解決方案。
Diodes(BCD)的AP1694優勢特性：
1.符合美國電氣制造商協會 （NEMA） SSL6調光曲線標準及IEC6100-3-2諧波標準
2.AP1694利用Diodes(BCD)的專利脈沖頻率調制技術來嚴格調節LED電流，以實現高功率因數和低總諧波失真；
3.AP1694采用臨界導通工作模式，確保驅動器的高效率及低電磁干擾特性；
4.AP1694為原邊側控制器，加上固有的穩定性，免除了環路補償的需要；
5.AP1694適用于120V和230V交流輸入，為總線可調光LED燈設計師提供更高的功率密度；
6.AP1694提供5%的初始LED電流準確度，有效滿足大多數總線可調光LED照明應用的要求；
7.AP1694可降低10%到50%的總物料清單成本,更簡單的布線和更小的電路占位面積。
AP1694除了具備上述的一些優勢特性之外，它還支持非隔離式降壓、升降壓和隔離式反激拓撲，與前沿觸發和后沿觸發的多種不同調光器兼容，并集成了完善的如：負載開路檢測、過壓、短路及過溫保護等一系列保護功能于一體。
AP1694 Features
- Primary Side Control for Output Current Regulation without Opto-coupler
- Boundary Conduction Mode (BCM) Operation to Achieve High efficiency
- High PF and Low THD
- High Efficiency without Dimmer
- Wide Range of Dimmer Compatibility
- Dimming Curve Compliant with NEMA SSL6
- Low Start-up Current
- Tight LED Current
- Tight LED Open Voltage
- BJT Transistor Driver
- Dynamic Base Driver Control
- Valley-mode Switching to Minimize the Transition Loss
- Easy EMI
- Internal Protections:
- Under Voltage Lock Out (UVLO)
- Leading-edge Blanking (LEB)
- Output Short Protection
- Output Open Protection
- Over Temperature Protection
- Flexible for Design with Small Form Factor and Very Low BOM Cost
- Totally Lead-Free & Fully RoHS Compliant
- Halogen and Antimony Free. “Green” Device
Description
The AP1694 is a high performance AC/DC power factor corrector for mains dimmable LED driver applications. The device uses Pulse Frequency Modulation (PFM) technology to regulate output current while achieving high power factor and low THD. It operates as a BCM (Boundary Conduction Mode) controller which is good for EMI.
The AP1694 provides accurate constant current (CC) regulation while removing the opto-coupler and secondary control circuitry. It also eliminates the need of loop compensation circuitry while maintaining stability. It can meet the requirement of IEC6100-3-2 harmonic standard.
The AP1694 features low start-up current, low operation current. It adopts dynamic base driver control technology and valley on switching mode to achieve high efficiency. It also has rich protection features including over voltage, short circuit, over temperature protection.
The AP1694 provides the dimmable LED driver with a wide dimmer compatibility including leading edge and trailing edge dimmer. The AP1694 can achieve deep dimming down to 1%, while the dimming curve is compliant with the standard of NEMA SSL6.
The AP1694 is available in SO-8 package.
Applications
- Mains Dimmable LED Lighting
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