Texas Instruments DLP® LightCrafter™ Evaluation Module DLPLIGHTCRAFTER DLPLIGHTCRAFTER Scheda Tecnica
Codici prodotto
DLPLIGHTCRAFTER
Setting the LED Current
Figure 2-25. DLP LightCrafter GUI Display Mode Set Button
3. To retrieve the EVM's display mode, click the "Get" button.
•
The GUI will automatically change to the correct tab and update the GUI settings in that tab to
match the EVM's settings.
match the EVM's settings.
2.4
Setting the LED Current
The DLP LightCrafter uses current drivers to individually control the current through each LED using an
integer current value. The LED current is computed as follows:
integer current value. The LED current is computed as follows:
LED Current (mA) = 1.8 × (LED Current Value) + 140
(1)
When at room temperature, the maximum value allowed is dependent on the cooling system of the DLP
LightCrafter. The passively cooled systems of the DLP LightCrafter (no extra heat sinks or fans) have a
thermal limit resulting in LED currents under 633 mA. DLP LightCrafter actively cooled systems (extra heat
sink and fan) have a thermal limit resulting in LED currents under 1.5 A.
LightCrafter. The passively cooled systems of the DLP LightCrafter (no extra heat sinks or fans) have a
thermal limit resulting in LED currents under 633 mA. DLP LightCrafter actively cooled systems (extra heat
sink and fan) have a thermal limit resulting in LED currents under 1.5 A.
summarizes these
constraints.
shows the "LED Current" settings in the GUI.
Table 2-1. LED Current Settings
DLP LightCrafter
LED CURRENT VALUE
LED CURRENT
COOLING SYSTEM
MIN
MAX
MAX
Passively cooled
1
274
633 mA
Actively cooled
1
758
1.5 A
Figure 2-26. DLP LightCrafter GUI LED Current Settings
30
Operating the DLP LightCrafter
DLPU006C – January 2012 – Revised December 2013
Copyright © 2012–2013, Texas Instruments Incorporated