Power Electronics
Triac Dimmable LED Lamp Driver Increases Performance, Delivers Cost Savings

Triac Dimmable LED Lamp Driver Increases Performance, Delivers Cost Savings

The AP1695 LED lamp driver from Diodes Incorporated optimizes the design of sub-12 W triac dimmer-compatible LED lamps with a dimming range of 1 to 100% and up to 30% reduction in bill of materials (BOM).

For 120 V and 230 V mains-dimmable retrofit LED lamps, such as the common 5 W 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 500 V high-voltage MOSFET into the space-saving SO-7 package. This device employs PFM technology to tightly regulate output current up to a 230 mA (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. The device is supported by data sheet, application and design notes and an evaluation board (ref. AP1695EV1).

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