Advertisement

Power Integrations has published a reference design describing a high-efficiency, ultra-compact driver for a B10-style LED light bulb. Based on Power Integrations’ LinkSwitch-PL non-isolated, single-stage LED driver IC, the DER-297 power supply design is specifically tailored for use with high-voltage LEDs such as the recently announced XLamp XM-L and XLamp XT-E ranges from Cree. The design provides the high-voltage output required by the LEDs, optimising overall system efficiency by reducing power lost due to current flow in the driver inductor and output diode. The DER-297 power supply design has a BOM of only 20 components, aided by the high level of integration in the LinkSwitch-PL device, which combines PFC and constant-current functions into a single buck-boost stage requiring only a tiny inductor.

SOURCE

Advertisement
Advertisement