Related Manuals for PICOLAS LDP-AV 4N55-90
Summary of Contents for PICOLAS LDP-AV 4N55-90
- Page 1 User Manual LDP-AV 4N55-90 PicoLAS GmbH Burgstr. 2 52146 Würselen Germany Phone: +49 (0) 2405-64594-60 Fax: +49 (0) 2405-64594-61 E-mail: info@picolas.de Web: www.picolas.de Rev. 1911...
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Page 2: Table Of Contents
Table of Contents Product Overview ......................3 How to use the Manual....................4 Dos and Don’ts ......................5 How to get started......................6 Connection of the Laser Diode..................7 How to connect the Driver ....................8 Pulse Input ........................9 Channel Selection ......................9 Power Supply Requirements ..................10 Trigger Output Monitor ....................10 Current Consumption ....................11 Cooling ........................11... -
Page 3: Product Overview
LDP-AV D06-N20... -
Page 4: How To Use The Manual
How to use the Manual Notice: Depending on the final application and operation regime, this unit must be assembled onto a heat sink or may stay non-cooled. Improper cooling may cause damage to the electronic components. Before powering on your driver unit read this manual thoroughly and make sure you have understood everything. -
Page 5: Dos And Don'ts
Dos and Don’ts Never ground any output connector. Never use any grounded probes at the output. Do not connect your oscilloscope to the output! This will immediately destroy the driver and the probe! Do not connect voltages in reverse polarity to the device as there is no built-in protection circuit. -
Page 6: How To Get Started
How to get started Step What to do Check Unpack your device. Attach the laser diode to the driver. Please see section “Connection of the Laser Diode” for further details. Assemble the driver onto an appropriate See section “Power Losses” for heat sink. -
Page 7: Connection Of The Laser Diode
The stray inductance of the load connected to the driver is very important. The term “load” not only includes the diode itself but also the packaging (bond wires!) and the connection between the driver and the diode. However, PicoLAS has no influence on these parts. -
Page 8: How To Connect The Driver
How to connect the Driver LD Pads Connector 1 Figure 2: Layout of the LDP-AV 4N55-90 Signals of the 10 pin Micro-Match header (connector 1): Pin Name Description +5 V +5 V supply voltage, connect to a stabilized power supply. -
Page 9: Pulse Input
The internal Schmitt-Trigger prevents unstable trigger response. Note: It is recommended to keep the trigger pulse width within the range of 1 µs .. 100 µs. The LDP-AV 4N55-90 has an internal short pulse sharpener included. This feature assures a constant pulse width. -
Page 10: Power Supply Requirements
Power Supply Requirements The driver requires a stabilized +5 V supply (used by control logic). Adhere to the power-up sequence as follows: 1) Fully ramp up the +5 V rail 2) Enable the HV supply 3) Apply trigger signal Should you aim to connect a large number of driver units to a single power supply the high start-up current spikes can be taken care of by using an additional capacitor bank and hard power switching at its output. -
Page 11: Current Consumption
Current Consumption Quiescent currents Supply input Conditions Min. Max. Unit +5 V 4.8 V .. 5.2 V 0 V .. 95 V Trigger signal present Supply input Conditions Typ. Max. Unit +5 V 4.8 V .. 5.2V Cooling The driver is base plate cooled only. Please assemble the entire unit to a heat-sink which is capable to take out the heat. -
Page 12: Recommended Operating Conditions
Recommended Operating Conditions Supply voltages Min. Typ. Max. Unit +5 V +4.75 +5.0 +5.2 Trigger input Min. Typ. Max. Unit HIGH level input voltage +5.2 @ Zin=50 Ω LOW level input voltage +0.8 @ Zin=50 Ω Pulse width µs Repetition rate Channel selection Min. -
Page 13: Output Power
Output Power Figure 5: Output power of the LDP-AV 4N55-90 in relationship to the HV voltage; measured with the SPL PL90_3 The LDP-AV 4N55-90 was tested with the SPL PL90_3 from OSRAM. The maximum current of this laser diode is 40 A. In total we expected that this driver can reach an output current up to 360 A or 90 A each channel. -
Page 14: Mechanical Dimensions
Mechanical Dimensions Figure 6: Mechanical dimensions of LDP-AV 4N55-90...
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