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LED Driver for High-Power and Mounted LEDs
DC2200 Touchscreen Display Main Menu
Back Panel of the DC2200 Driver
The DC2200 LED Driver is designed to power many of Thorlabs' LEDs, including the Solis High-Power LEDs for Microscopy, Thorlabs' Mounted LEDs, and Thorlabs' Fiber Coupled LEDs. The driver can provide a maximum LED current of up to 10 A and maximum forward voltage of up to 50 V. A list of current / forward voltage combinations outlined in the table to the right.
The back panel includes two LED connection terminals for compatibility with all of Thorlabs' high-power and mounted LEDs. The LED1 terminal is a female 12-pin Neutrik MiniCON connector that accommodates high-power LEDs that require drive currents up to 10 A. The LED2 terminal has a female 4-pin M8x1 connector designed for lower-power LEDs that require drive currents of ≤2 A. The two inputs are visible in the back view of the driver housing shown above. LED compatibility information is provided in the LED Options table below. While two LEDs can be connected to the driver, only one LED can be driven at a time. For cases where two LEDs are connected simultaneously, the front panel of the driver can be used to select which LED recieves the drive current.
The driver can either be controlled locally via the device front panel, as shown in the screenshot above, or from a PC using the USB 2.0 port on the back of the device and the included software package (see the Software tab). The main menu of the front panel's touch screen display allows the user to select between operating the LED in constant current mode or brightness mode, internally or externally pulsed modes, and TTL modulation. In addition to reading data stored in the EEPROM memory of LEDs with this feature, the driver can also initiate a test procedure to measure the LED forward voltage, from which it can determine the maximum current limit. More information on the operating modes can be found on the Display tab.
In addition to the USB 2.0 port and LED connection terminals, the back of the housing includes an SMA input for the external modulation signals, an interlock circuit that can be connected to a user-supplied emergency off switch, and grounded jack that can be used with ESD protection equipment. See the Front & Back Panel tab for a diagram of the back of the housing.
Each DC2200 includes two auxiliary cables for connecting custom LEDs for the driver. One cable has a male 12-pin Neutrik MiniCON connector that is compatible with the LED1 terminal. The second cable (Item # CAB-LEDD1) has a male M8x1 connector compatible with the LED2 terminal. Additional CAB-LEDD1 cables are available for purchase separately below.
The DC2200 electronics are contained in a compact 112.0 mm x 85.0 mm x 190.3 mm (4.41" x 3.35" x 7.49") housing which rests on four rubber feet. Each unit includes a universal (100 - 240 V) power supply with a location-specific power cord.
DC2200 Front Panel
DC2200 Back Panel
The DC2200 LED Driver's interface consists of a flat menu hierarchy that makes it easy to find parameters to adjust. The screenshots below provide examples of the main functions supported by the driver, including constant current, brightness, and modulation operating modes.
Constant Current Mode
Pulse Width Modulation (PWM) Mode
Internal Modulation Mode
External Modulation Mode
DC2200 Pin Diagrams
|1||LED Cathode||7||LED Anode|
|2||LED Cathode||8||LED Cathode|
|3||Not Used||9||LED Cathode|
|4||LED Anode||10||Not Used|
|5||LED Anode||11||EEPROM (Data) I/O|
|6||LED Anode||12||EEPROM (Data) Ground|
0 to 5 V, 0 to 250 kHz External Modulation
(See Specs Tab for Details)
*USB type A to mini-B cable included.
A custom high-power LED that draws up to 10 A of current can be connected to the LED1 Terminal using the CAB-DC2200 cable, which is included with the DC2200. When wiring the cable to a custom LED, all four cathode wires should be attached to the LED Cathode and all four anode wires should be attached to the LED anode in order to take advantage of the driver's maximum supported current of 10.0 A.
|3||Gray||6 V - 13 V for Fan Power Supply|
|10||Violet||Ground for Fan Power Supply|
|11||White and Black Striped||DO NOT CONNECT|
|12||White and Brown Striped||DO NOT CONNECT|
A custom LED that draws up to 2 A of current can be connected to the LED2 Terminal using the CAB-LEDD1B cable.
|3||Black||DO NOT CONNECT|
|4||Blue||DO NOT CONNECT|
The available software can be downloaded by clicking on the link below.
The following items are included in the DC2200 package:
|LED Current /
Max LED Forward Voltagea
|1.0 A / 50.0 V
2.0 A / 35.0 V
4.0 A / 15.0 V
5.0 A / 10.0 V
10.0 A / 5.0 V
|1.5 A / 50.0 V
2.0 A / 35.0 V
LED drivers are current sources, meaning that they supply a user-set current at the specified forward voltage of the LED being driven. In addition to a maximum current, these drivers also have a corresponding maximum voltage that they are capable of supporting, so both specifications must be taken into account when determining driver compatibility with a given LED.
The DC2200 is designed to use one of five current ranges for LEDs connected to terminal LED1 or one of two current ranges for LEDs connected to terminal LED2 in order to maximize the forward voltage available for driving the LED. Preset current ranges and the associated maximum available forward voltage are given in the table to the right. When determining LED compatibility, the LED Current / Max LED Forward Voltage can be interpreted as follows:
and so on. Therefore, LED compatibility should be determined by choosing the smallest LED Current value that is larger than the LED operating current and comparing the corresponding Max Forward Voltage value to that specified for the LED. LEDs with a forward voltage smaller than the stated maximum voltage for the drive current are compatible.
Example 1 - Compatible LED: An LED with a connector compatible with the LED1 terminal is going to be driven with a forward voltage of 8 A and has a forward voltage of 4.8 V. Therefore, the 10.0 A current rating for the DC2200 driver should be used to determine compatibility. The corresponding Max LED Forward Voltage for the DC2200 is 5.0 V, so an LED driven at 8 A with a forward voltage of 4.8 V is compatible.
Example 2 - Incompatible LED: An LED with a connector compatible with the LED1 terminal is going to be driven with a forward voltage of 4.2 A and has a forward voltage of 11 V. Therefore, the 5.0 A current rating for the DC2200 driver should be used to determine compatibility. The corresponding Max LED Forward Voltage for the DC2200 is 10.0 V, so an LED driven at 4.2 A with a forward voltage of 11 V is incompatible.
In actuality, the maximum possible forward voltage will scale inversely with the amount of current supplied by the driver: higher currents result in lower maximum forward voltage values that the driver can support before being damaged. The specified LED Current / Max Forward Voltage pairs are set so that the driver can support at least the specified forward voltage at the upper limit of the current range. The three graphs below provide examples of the actual measured maximum voltage provided by a DC2200 driver for three of the preset current ranges on the LED1 terminal: 2 A, 4 A, and 10 A. The exact performance will show some variation between drivers, but will always be within the specifications stated above.
Thorlabs offers two options for driving our Solis® LEDs. The DC20 is a basic option that allows users to control the intensity of their LED using a control knob on the top or via an external TTL signal for modulation. For more advanced applications, our DC2200 drivers provides a touchscreen interface that allows users to control the LED current, select internal or external modulation modes, and more. The table below provides a comparison of key controller features.
|Solis® LED Driver Selection Guide|
|Photo (Click to Enlarge)|
|LED Current / Forward Voltage (Max)||1 to 10 A / 5.0 to 14.0 Va||1.0 A / 50.0 Vb
2.0 A / 35.0 Vb
4.0 A / 15.0 Vb
5.0 A / 10.0 Vb
10.0 A / 5.0 Vb
|Noise and Ripple
(1 Hz to 10 MHz, RMS, Typical)
|<400 µA||<100 µA from 0.0 to 4.0 A
<200 µA from 4.0 to 10.0 A
|Internal Modulation Modes||-||0.1 Hz to 20 kHz (PWMc Mode)
1 µs to 10 s On or Off Time (Pulse Mode)
20 Hz to 100 kHz (Internal Modulation Mode
with Sine, Square, Triangle Waveforms)
|-||DC - 250 kHz
[Small Signal Bandwidth (Sine)]d
|TTL Modulation (External)||DC to 1 kHz (Square Wave, PWMc)||DC to ≥18 kHze|
|LED Control Interface||Knob to Control LED Current,
BNC Port for TTL Modulation
|Easy-to-Navigate Touchscreen Interface,
Brightness and Constant Current Operating Modes,
Internal and External Modulation Modes,
SMA Port for External Modulation Accepts
TTL Signal or Waveform from a Function Generator,
USB Interface for Remote Control
|Current Limit||Automatically Read and Set from the Solis LED's Internal Memory to Protect the LED from Overdriving|
|External Software Interface||No||DC2200 GUI|
|Other Compatible LEDs||-||Mounted
Male M8x1 Connector
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
The diagram above shows the male connector for use with the above Thorlabs LED drivers. The connector is a standard M8x1 sensor circular connector. Pins 1 and 2 are the connection to the LED. Please note that the pin connection diagram shown here may not be valid for third-party LED drivers.