Products

SDC-200 diode driver

Applications

Diode pumping for DPSS lasers such as Nd:YAG

Features

Input – 110-240 V AC
Output (for different models) – up to 300 A, up to 400 V, up to 90 W
Pulse width – 50-300 us
Repetition rate – up to 20 Hz
Rise time – < 20-30 us typically
1x high-power TEC + 1x low-power TEC inside
Possibility to control an extra external Pockels cell driver

Download manual (1.7 MB)

SDC-200 pulsed laser diode driver is a family of drivers specifically designed to power medium-power diode-pumped solid-state (DPSS) lasers, such as Nd:YAG. Our module provides pulsed current with pulse widths of 50-300 µs to drive pumping diodes, delivering up to 90 W of average power. Pulse repetition rates of up to 20 Hz are supported.

The module can be synchronized with other equipment (Synchro In & Synchro Out optputs). It is also capable of powering and controlling a Pockels cell driver for the generation of Q-switched pulses.

Different customizations are available on request.

All the important parameters for SDC-200 pulsed laser diode driver (such as output current, buffer voltage, pulse width, pulse repetition rate and others) can be controlled from a computer via the USB or via the RS-485 interface. The default interface is the RS-485 (the RS-232 is available upon request).

We offer also an encased version of the SDC-200 with 5” color touchscreen display, please check the SDC-BT product page.

Driver Architecture:

For your convenience for pulsed drivers we offer a calculator for an average output power and a pulse energy (link to open it as a new window)

Input:

Voltage

24 V DC

Current consumption

< 15 A

Output:

Regime of operation

pulsed

Maximum buffer voltage (V_max)

model dependent (user selectable up to 400 V), other on request

Maximum output voltage

model dependent (see also How to order?), other on request

Maximum output current (I_max)

model dependent (user selectable up to 300 A), other on request

Output current

approx. 10-100 % of I_max adjustable, other on request

Buffer voltage

adjustable in 10 V – V_max range, other on request

Pulse width

adjustable in 50 us – T_max range, T_max is model dependent, 250 us or 300 us by default, other on request

Rise time

< 20-30 us typically, slow start adjustable in 0-50 us range

Pulse repetition rate

up to 20 Hz adjustable, other on request

Maximum average output power

60 or 90 W, model dependent, other on request

Peak power

model dependent (usually in the 10-20 kW range), other on request

TEC 1:

Current

up to 10 A

Voltage

up to 20 V

Power

200 W max.

Feedback loop

10 kOhm NTC

Temperature

+10 … +40 °C by default, other on request

TEC 2:

Current

up to 5 A

Voltage

up to 20 V

Power

50 W max.

Feedback loop

10 kOhm NTC

Temperature

+10 … +40 °C by default, other on request

Miscellaneous:

Protections

• from overheating
• from incorrect buffer voltage
• TEC1 out of range
• TEC2 out of range
• too high input frequency
• door-interlock connection

Cooling

conductive through the bottom heatsink

Interfaces

• USB
• RS-485 (RS-232 on request) machine interface

Synchronizations

• 1 pc synchro input
• 1 pc synchro output

Pockels cell driver control

yes, the Pockels cell driver needs to be purchased separately, placed outside and connected with a cable

Environment:

Operating temperature

+10 … +40 °C

Storage temperature

-20 … +60 °C

Humidity

0 … 90%, non-condensing

Other:

Size (LxWxH)

150x130x48 mm (low-voltage version)
150x130x53 mm (high-voltage version)

Weight

< 0.5 kg

SDC-200-YYYY-[VVVVV], where:

YYYY codes the voltage version of the driver (nominal value, can be 50 V, 100 V, 250 V, 400 V, or custom). The maximum output current, internal capacitor bank capacitance, average output power, and number of TECs are fixed for each voltage version, see details in the table below.
VVVVV code denotes the type of communication interface, it can be either RS232 or RS485. By default, the RS485 version is supplied.

PARAMETER	VALUE (*)
	SDC-200-50V	SDC-200-100V	SDC-200-250V	SDC-200-400V
Embedded capacitor bank:
Voltage (V_max), V	63	126	250	400
Capacitance, mF	10.8	2.7	1.5	0.68
Capacitor charging power supply:
Output voltage (buffer voltage), V	10…63	10…126	10…250	10…400
Maximum power in dependence on buffer voltage, W (**)	> 60 @ 30V…63V	> 60 @ 30V…126V	> 90 @ 250V	> 90 @ 400V
Diode driver:
Output current (I_min-I_max), A	15…300	10…150	5…100	5…50
Recommended diode voltage @ I_max, T_max, V (***)	< 53	< 106	< 230	< 360
Pulse width (50-T_max), us	50…300	50…300	50…250	50…250
Repetition rate, Hz	0…20	0…20	0…20	0…20
Output limitations:
Energy limit	I_maxV_maxT_max
Power limit, W	60	60	90	90
Guaranteed regime	300A-53V- 300us-10Hz or 300A-35V- 300us-20Hz	150A-106V- 300us-10Hz or 150A-80V- 300us-20Hz	100A-230V- 250us-10Hz	50A-360V- 250us-10Hz
TEC 1	+	+	+	+
TEC 2	+	+	N/A	N/A

(*) Customizations (e.g. non-standard output currents, non-standard diode voltages and other parameters, software customizations, Pockels cell driver control customizations) are possible on request.

(**) In dependence on the topology of the internal DC/DC power converter the dependence of the output power of the capacitor charger from the output voltage is principally different for different models of SDC-200. Two low-voltage models (SDC-200-50V and SDC-200-100V) deliver full output power in a wide range of the output voltages. Unlike them, two high-voltage models (SDC-200-250V and SDC-200-400V) are able to deliver full output power close to V_max only. At lower output voltages the output power of high-voltage models drops approx. linearly with decreasing output voltage.

(***) Please note that the output voltage applied to the diodes is several volts lower than the buffer voltage due to voltage drops across internal components and wiring. The higher output current and pulse width are, the lower output voltage is possible with the same buffer voltage. On the contrary, the possible output voltage reaches exactly the buffer voltage at very low currents and pulse widths.

Examples:

– SDC-200-400V – fully standard 400 V version with all the parameters as given above
– SDC-200-250V-RS232 – standard 250 V version, but with RS-232 machine interface

SDC-200 diode driver

Applications

Features

Driver Architecture:

Input:

Output:

TEC 1:

TEC 2:

Miscellaneous:

Environment:

Other:

SDC-BT

Examples:

Resources