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T-Cube™ LED Driver
Multiple High-Power LEDs
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Back View of the LEDD1B T-Cube. For more information, please see the Pin Diagrams tab.
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Top View of the LEDD1B T-Cube
The LEDD1B driver is designed to drive high-power LEDs with currents up to 1200 mA. It features an adjustable LED current limit to protect the connected LED. The output current can be limited continuously from 200 mA to 1.2 A using the adjuster on the front of the unit (shown below), thereby ensuring the output current does not exceed the limit regardless of the other settings or the modulation input voltage.
Current Limit Adjuster
The LEDD1B is compatible with our high-power LEDs, which are available in collimated, uncollimated, PCB-mounted, and fiber-coupled versions. It is also compatible with select unmounted LEDs offered by Thorlabs for which the maximum forward DC current is higher than 200 mA. When driving these LEDs, care must be taken to ensure the LEDD1B current limit is set at or below the LED's maximum forward DC current rating. Set the current limit (see left) by rotating the arrow direction with a flathead screwdriver.
The LEDD1B driver offers three operation modes: constant current mode, trigger mode, and modulation mode. The trigger and modulation modes are controlled by an external voltage in the 0 to 5 V range. When in the modulation mode, the LED current output exactly follows the amplitude and waveform of the input signal independent of the knob settings on the top of the T-Cube control unit. In trigger mode the output current switches to the level that has been selected by the knob on the top of module as soon as a threshold voltage is reached. This can be used for pulse width modulation (PWM). The threshold voltage is fixed and cannot be changed by the user. The operation mode can be changed by a switch next to the current selector knob.
This LED Driver has the same compact form factor as other T-Cube modules, and thus, it integrates well into the platform. It is shipped attached to a removable base plate, which allows the T-Cube to be easily secured to an optical table.
The LEDD1B is designed for high-brightness LEDs only. The LED current limit has to be adjusted by the trim pot on the front of the unit so that the maximum current of the connected LED will not be exceeded. The available range for this limit is 200 to 1200 mA.
Power Supply Options
The preferred power supply (single channel or hub-based) depends on the end user's application and whether you already own compatible power supplies. To that end and in keeping with Thorlabs' green initiative, we do not ship these units bundled with a power supply. This avoids the cost and inconvenience of receiving an unwanted single-channel supply if a hub-based system would be more appropriate. The power supply options compatible with the LEDD1B LED Driver are listed below.
LED Connector - Female
0 to 5 V external LED control.
The compact LEDD1B T-Cube is capable of driving LEDs with currents up to 1200 mA. The output power can be varied using the manual control knob and modulated using an external trigger signal; the maximum output current is set using an adjuster on the front of the T-Cube. A CAB-LEDD1 LED connection cable is included with each LEDD1B.
Please note that unlike our other T- and K-Cube modules, the LEDD1B LED Driver is fully manual. This T-Cube lacks USB connectivity and cannot be controlled via APT or Kinesis® software.
Power supplies are sold separately; please see the options below.
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A location-specific adapter is shipped with the power supply unit based on your location. The adapters for the KPS101 are shown here.
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The KPS101 Power Supply Unit
The KPS101 can supply up to 2.4 A and power a single K-Cube or T-Cube. It plugs into a standard wall outlet and provides +15 VDC.
The KCH301 and KCH601 USB Controller Hubs each consist of two parts: the hub, which can support up to three (KCH301) or six (KCH601) K-Cubes or T-Cubes, and a power supply that plugs into a standard wall outlet. The hub draws a maximum current of 10 A; please verify that the cubes being used do not require a total current of more than 10 A. In addition, the hub provides USB connectivity to any docked K-Cube or T-Cube through a single USB connection. Please note that the LEDD1B LED Driver does not include USB connectivity and cannot be controlled through APT or Kinesis® software.
A KAP101 or KAP102 Adapter Plate (sold separately) is required for each T-Cube to operate on the KCH301 or KCH601 controller hub. The KAP101 is designed to adapt 60 mm wide T-Cubes to the hubs, while the KAP102 is designed to adapt 120 mm wide T-Cubes to the hubs.
For more information on the USB Controller Hubs, see the full web presentation.
The 4-Pin M8 connection cable can be used to connect the high-power LEDs on metal core PCB or other custom LEDs to the following Thorlabs LED drivers: LEDD1B, DC2200, DC4100, and DC4104 (the latter two require the DC4100-HUB).
Pin Connection - Male