Power supplies for LED lighting

27 April 2011 Power Electronics / Power Management

Emerson Network Power has rolled out a family of standard power supplies for LED lighting.

The new 70 Watt LDS70 family of low-profile solutions is designed to support system life requirements greater than 70 000 hours in the rapidly growing LED lighting market. They provide both constant-current and constant-voltage modes – constant-current mode features programmable current levels; constant-voltage mode has no-load to full-load operation.

Current levels can be preset by the system designer or adjusted in application to perform dimming functions. The narrow, low-profile form factor of the LDS70 series allows customers to reduce light fixture size or locate them in small areas of their system. Both 12 V and 58 V models have no minimum load requirement and are comprehensively protected against short circuit, over-voltage and over-temperature situations. The LDS70 series accepts a wide input voltage range of 100 V to 240 V a.c. (U models) or 120 V to 277 V a.c. (H models) and is equipped with active power factor correction rated at 0,9 typical to minimise input harmonic current distortion.

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