D100 compact 250A laser driver

High Current Laser Driver- D100
  • Constant-current pulsed drive up to 250 amps into 30 volt laser load
  • Trimpot or external analog programming of current and pulse width
  • Trimpots serve as laser current and pulse width limits in external-programming mode
  • Thermal and safe-operating-area protections of power drivers
  • LED indicators: Power, OK, Trigger
  • 4.2 x 3.5 inch printed-circuit board
  • Single external power supply 20 to 48 volts; compatible with embedded or wall-wart supplies
  • Evaluation kits are available
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The D100 is a constant-current pulsed laser driver capable of driving bar laser stacks or VCSEL arrays up to 250 amps and 30 volts. Current and pulse width can be set by on-board trimpots or user-provided signals. The D100 provides user-settable peak current and pulse width limiting circuits for laser protection, and thermal/SOAR protections for the onboard power semiconductors.

The D100-9 is a full evaluation kit, including power supplies and cables.

FUNCTION High power pulsed laser driver
TRIGGER INPUT CMOS/TTL PULSE input enables laser current
Threshold +1 volts typ, protected to ± 20 volts
Nom 1K to ground, optional 50 Ω termination
TIMING MODES A) Laser drive follows PULSE input
B) Laser drive follows PULSE input with trimpot pulse width limit
C) PULSE input rising edge triggers trimpot-set pulse width
Pulse width/limit adjustable with trimpot from 50 µs to 1000 µs
LASER OUTPUT Constant-current drive
Trimpot or user adjustable 10 to 250 amps
Compliance up to 30 volts at 250 amps, 750 µs with 48 volt power supply
RISE/FALL TIMES 10 µs typ
MAX POWER DISSIPATION 12 watts free air
30 watts with 500 LFPM air flow
60 watts with optional heat sink
TEMPERATURE RANGE Operating, 0 to 60°C; to -40°C with restrictions
Non-operating, -40 to 80°C
INTERNAL CONTROLS DIPswitch:
Laser ON/OFF
Current setpoint POT / External
Timing modes A, B, C
ISET: current set / limit trimpot, 10-250 amps
PW: pulse width set / limit trimpot, 50-1000 µs
POWER User-furnished +20 to +48 volts DC
Reverse and startup-surge protected
HV Present LED and bleeder provided
CONNECTORS V+, GND, LASER A, LASER K: 0.25" male fastons
TRIG : SMB trigger input, CMOS/TTL
IMON : SMB current monitor output, 5 volts at 250 amps
VLMON : SMB laser anode – cathode voltage output, VAK / 5
ILK : 3-pin laser drive interlock
20-pin ribbon cable connector provides full control and supervision
LED INDICATORS Orange PWR Green OK Blue TRIG
PACKAGING 3.5" x 4.2" printed circuit board
2" nom height

PDF Datasheet: D100 compact 250A laser driver

PDF Manual: D100 compact 250A laser driver

D100-1: compact 250A laser driver

D100-9: compact 250A laser driver evaluation kit (includes: D100-1, J24 24 volt power supply, J53-1 SMB to BNC cable, and D106 mounting flange)

J24: 24 volt 1.2 amp power supply

J40: 48 volt 1 amp laptop-type power supply

J53-1: 3′ SMB to BNC cable

J105: Interlock jumper