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半導体レーザー用ドライバ（Universal Laser Diode Driver）
長年の経験と実績に裏打ちされた確かな技術力

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EKSPLA
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半導体レーザー用ドライバ（Universal Laser Diode Driver） 半導体レーザー用ドライバ（Universal Laser Diode Driver）
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uniLDD 概要

EKSPLA社製は、長年に渡りレーザー及びレーザーに関する電気機器の製造・販売を行っており、常に最先端の製品を世に送り出しています。
特にハイパワーエレクトロニクス(高速／高電圧電源)は、EKSPLAが得意とするコア技術の一つです。
R&DからOEMまでと幅広い用途に対応するために、お客様のご要望に応じたカスタマイズも承っておりますので、お気軽にお問い合わせください。

Features

半導体レーザー用ドライバ(Universal Laser Diode Driver)
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uniLDD is DC input power converter designed to supply
CW or pulsed current for single emitter, bar or stacked laser
diode in Constant Current Mode (or CC mode).
It can be installed either as unit assembled either as set
of open PCB boards or as standalone unit.
The standalone unit is uniLDD enclosed together with the power supply.
  • Best suitable for high-current and high-power applications
  • Different firmware versions featuring CW, QCW, TEC control operation
  • Hardware versions for CW, QCW, TEC control, Conductive cooling options
  • At factory frequency response analysis is used to optimize performance to achieve stable operation with particular laser diode and connection cables combination
  • High efficiency switching mode converter
  • Multi-phase power stage for low current ripple
  • Low current drift
  • Parallel operation of two drivers to double output current
  • “Voltage booster” layout option to extend output voltage to 200 V and more
  • External storage capacitor option for long-pulse QCW operation
  • Analog and digital (CAN, RS232) control interfaces

Analog Control Signals

Description of Analog interface pinout

Connector type: 15 pin D-SUB female

Pin Signal name Direction Voltage level Description
1 Enable Input TTL, LVTTL The enable function pulls the RTO signal high
2 Ready to Operate (RTO) Input/Output
through
330 Ω resistor		 >2.4 V driver
output is active,
<0.5 V output is
clamped		 RTO is tied to "High" by the driver when "Enable" input is High.
Alarms clamp RTO low and disable driver output. External device
may clamp RTO to GND and disable driver output. RTO allows to
join fault circuits of several drivers connected in parallel
3 Interlock Input 10 kΩ pull up to 3.3 V,
LOW ≤ 0.4 V		 The Interlock function can be connected to external safety or
machine protection switches such as door or temperature switches.
Open = OFF Connect to GND = RUN
4 GND – – –
5 Vout monitor Output Vout, driver output voltage The output voltage monitor. Vout = Diode compliance voltage +
voltage drop on connection wires
6 Iout monitor Output 0 – 12 V 1) = 0 – Iout max The output current monitor
7 Iprogram Input 0 – 9 V 1) = 0 – Iout max Output current setting or modulating by applying a voltage,
CW and Pulse mode

Performance & Drawings

uniLDD-current-drift

uniLDD current drift.
From cold start for
different currents

uniLDD-current-error

uniLDD current error.
12 V and 24 V DC power,
2 V junction + 10 MΩ series
R load

uniLDD-efficiency

uniLDD efficiency.
12 V and 24 V DC power,
2 V junction + 10 MΩ series R
load

uniLDD-ripple-current

uniLDD current error.
12 V and 24 V DC power,
2 V junction + 10 MΩ series R
load

uniLDD-CW-version-A

CW version.
Capacitors bank is excluded

uniLDD-CW-version-B

CW version.
Capacitors bank is excluded

Modular-design-of-uniLDD

Modular design.
Required features and
specifications are achieved by combining
different boards to one module

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仕様

Parameter Value 1) 2) Notes
OUTPUT, CW mode
Diode compliance voltage 1 … 28 V Up to 95% of power stage supply voltage. Can be extended using voltage booster layout
Max current 50 – 100 A Can be extended above 100 A using parallel connection of several drivers
Current ripple 0.1% pk-pk DC … 100 kHz bandwidth, in x0.5 … x1 of max current range
Current drift < 0.2% Cold start, 8 h period, after 5 min. warm up
Bandwidth of Iprogramm control input frequency > 10 kHz At minimal connection cable inductance
OUTPUT, OCW (Pulse mode)
Diode compliance voltage 1 … 80 V Can be extended using voltage booster layout
Max pulse current 160 – 360 A Can be extended above 360A using parallel connection of the drivers
Duty cycle ≤ 20%
Current pulse raise, typical range 10 … 50 μs @ minimal connection cable inductance and sufficient power stage voltage
Max RMS current 100 A 80 A for diode compliance voltage gt; 28 V
Current pulse amplitude stability 0.1% pk-pk In x0.5…x1 of max current range
Current drift < 0.2% Cold start, 8 h period, after 5 min. warm up
OUTPUT, TEC control (if equipped)
Quantity of output channels 1 or 2
Maximal output current 25 A
Maximal output voltage 28 V
INPUT
Supply voltage, power stage 12… 90 VDC
Supply voltage, control stage 12 … 30 VDC
PROTECTIONS
Current transient protection Shut-down
Open circuit Shut-down
Over temperature Shut-down
Power voltage brownout Shut-down
Interlock Shut-down
AUXILIARY OUTPUTS
Aux1 +5 V @ 200 mA
Aux2 +15 V @ 100 mA
Aux3 -15 V @ 100 mA
PHYSICAL CHARACTERISTICS
Assembly dimensions (L×W×H) 190×68×55 mm
ENVIRONMENT
Operating temperature 0 to 40°C De-rate current at higher temperature
Cooling Forced air Installed or external shared fan. Conductive cooling version available as option
  1. 1. Specifications are subject to change without prior notice.
  2. 2. Not all combinations of parameters are possible at the same time.

製品カタログ

半導体レーザー用ドライバ（Universal Laser Diode Driver） カタログ（英文）'24.3.8 546966
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