a division of CUI INC

date

page

SERIES:

DESCRIPTION:

03/2011

3 of 5

LED DRIVER

VLED15

phone 503.612.2300

fax 503.612.2382 www.v-infinity.com

ISOLATION SPECIFICATIONS

parameter

conditions/description

min

nom

max

units

isolation

meets the UL60950-1 reinforced, double insulation

NEC (Class 2) EN60598-1 class II

DIMMING REQUIREMENTS

Dimming of the driver shall be possible with standard triac based incandescent dimmers that chops the AC voltage as shown below or with

Electronic Low Voltage dimmers that employ reverse phase control.

During the rapid rise time of the AC voltage when the dimmer turns on, the driver shall not generate any voltage or current oscillations and

inrush current shall be controlled. During the on time of the AC input, the driver shall regulate the output. The RMS value of the driver output

current shall be proportional to the on time of the AC input voltage. Care must be taken to assure that the minimum load requirements are

met. Multiple drivers/LEDs may be connected to the dimmer in order to meet the minimum load requirement.

Chopped AC Input to Driver

AC Wall Power

DIMMING RANGE

When operating with an incandescent dimmer, the RMS output current shall vary depending upon the conduction angle and RMS value of the

applied AC input voltage. The following graph shows the typical output versus conduction angle at various line voltages.

The specified dimming range shall be from 30 degrees through 147 degrees conduction angle. Operation throughout this dimming range

shall be monotonic and produce a smooth transition of light output in both directions of the dimming range. At 120 V ac or 240 V ac input,

the driver shall achieve full rated output current at less than 147 degree conduction angle.

Typical Io vs Conduc on Angle

0

0.2

0.4

0.6

0.8

1

1.2

0

204060

80

100

120

140

160

VAC Conduc on Angle (Degrees)

100V (200V)

115V (230V)

132V (264V)