Power Integrations has announced an LED-driver reference design for high-power LED bulb replacement. The driver can deliver the power required for a 100W incandescent bulb replacement in an A19 form factor. The DER-322 driver describes a non-isolated, high-power-factor LED driver designed to drive a nominal LED string voltage of 78V at 230mA from input voltages 195 to 265V AC at 47 to 63Hz. The LED driver uses a low-profile LNK460VG from the company's LinkSwitch-PL family of ICs. It is EN61000-3-2 C (D) compliant and passes total harmonic distortion limits, according to the company. The LED driver features a power factor above 0.95 and is suitable for use in commercial and consumer applications. With power factor correction and constant current conversion combined into a single switching stage, the driver's reference design has a low component count, which enables miniaturisation, claims the company. The reference design also eliminates short-lived electrolytic input bulk capacitors, says the company. The LED driver is also reconfigurable as a T8 tube replacement driver in high-end LED lighting applications. The reference design can be modified to support triac dimming.