Triac Dimmable LED Lamp Driver Delivers Cost Savings
The AP1695 LED lamp driver from Diodes Incorporated optimizes the design of sub-12W triac dimmer-compatible LED lamps with a dimming range of 1 to 100% and up to 30% reduction in bill of materials (BOM). For 120V and 230V mains-dimmable retrofit LED lamps, such as the common 5W GU10 and 8W energy-saver bulbs, the high-performance AP1695 uses a patented constant on-time control technique to enable deep triac dimming down to 1% and an increase in lamp/triac compatibility. Its dimming curve complies with the NEMA SSL6 standard and the driver is fully compliant with the requirements of the IEC6100-3-2 harmonic standard.
The AP1695 is a single-stage driver integrating a 500V high-voltage MOSFET into the space-saving SO-7 package. This device employs PFM technology to tightly regulate output current up to a 230mA (max), while maintaining a power factor higher than 0.9 and a THD rating less than 30%. Its boundary-conduction mode ensures higher efficiency and enhanced EMI performance.
By operating on the primary side, the device removes the need for opto-couplers, secondary-side control and loop-compensation circuitry without compromising application stability. The AL1695 also has the following integrated protection features: over-voltage, short-circuit and over-temperature protection. The AP1695 triac dimmable LED lamp driver from Diode Incorporated is priced at $0.45USD each in 10k piece quantities.
