Key features
- Wide input voltage range up to 48 VDC
- Output current up to 38 A
- Compliance voltage up to 40 V
- Efficiency up to 97 %
- Low current ripple
- Triggering up to 3 kHz
- Analog modulation up to 30 kHz
- Overcurrent protection
- Reverse current protection
- Crowbar circuit protection
- External interlock function
- CAN interface
- Integrated heatsink
- Compact size 70 × 56 × 34 mm
Description
The HPLD-1500 is a compact non-isolated DC/DC switch mode power supply with constant current output.
Driver produces high stability, low ripple current for powering laser diode modules. The output current value can be varied from 0 to 38 A. Driver can be controlled by CAN interface or external modulation signals.
Driver has three modes for use in various applications.
- Mode 1 – CW – is continuous current mode with parameters set by PC control software.
- Mode 2 – Trigger – allows to set current value by PC control software and to trigger output current by external TTL signal.
- Mode 3 – Analog – allows to modulate current by external modulation signal and to turn driver ON / OFF by external TTL trigger.
Protection features include an overcurrent protection, reverse current protection, crowbar clamp protection and over-temperature shutdown.
Powering
The driver requires a DC power supply. PSU’s output characteristics must cover the driver output power and laser diode voltage. The power supply output voltage must be at least 15% higher than the laser diode voltage drop. We recommend to use a low voltage power supply (for example 12VDC) for powering low power laser diode with voltage drop 2÷10V.
Cooling
The HPLD-1500 PCB is completed by heatsink for easy thermal management. The driver produces up to 60W of power losses. Thus the driver heatsink has to be mounted on a thermal conductive surface to ensure proper operation and prevent an over-temperature shutdown. If the conduction cooling is not enough cooling can be improved by adding a fan.
Software
We offer own PC control software to control the driver.
Specifications
| Parameter | Units | Min. | Typ. | Max. |
|---|---|---|---|---|
| INPUT | ||||
| Voltage | VDC | 12 | – | 48 |
| Current | A | – | – | 34 |
| OUTPUT | ||||
| Power | W | – | – | 1500 |
| Compliance voltage | V | 2 | – | 40 |
| Current range | A | 0.0 | – | 38.0 |
| Current ripple amplitude | mA | – | 40 | 60 |
| Current ripple frequency | kHz | – | 425 | – |
| Current set accuracy | % | – | – | 1.5 |
| Overcurrent value | A | 5 | 39 | 40 |
| Soft start rise time | ms | – | – | 11 |
| Soft start fall time | ms | – | – | 16 |
| Rise/Fall time | μs | – | 50 | 70 |
| Current sensing monitor | mW/A | – | 25 | – |
| MODULATION | ||||
| Trigger input voltage | V | 3.3 | – | 5.0 |
| Trigger input impedance | Ω | – | 500 | – |
| Trigger pulse frequency | kHz | – | – | 3 |
| Trigger pulse width | μs | 150 | – | – |
| Trigger to current delay | μs | – | – | 20 |
| Analog input voltage | V | 0 | – | 10 |
| Analog input impedance | kΩ | – | 4 | – |
| Current setpoint | A/V | – | 3.8 | – |
| Analog input frequency | kHz | – | – | 30 |
| POWER DISSIPATION | ||||
| Efficiency | % | – | – | 97 |
| Maximum power losses | W | – | – | 60 |
| TEMPERATURE | ||||
| Operating | ˚C | +10 | – | +40 |
| Storage | ˚C | -20 | – | +70 |
| Humidity, Non-Condensing | % | – | – | 95 |
| CONNECTIONS | ||||
| Power | Screw Terminal М4 (74650194R Würth Elektronik) | |||
| CAN interface, interlock, trigger, modulation | 8-pin Ribbon Cable Connectors (7-188275-8 TE Connectivity) | |||
| Current monitor | SMA (5-1814832-2 Molex) | |||
| MECHANICAL | ||||
| Size | 100 × 54 × 27 mm | |||
| Weight, not more | < 300 g | |||