Editing Intensify Nx50 setup guide
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− | [[File:intensifylayout.png|thumb| | + | [[File:intensifylayout.png|thumb|500px|[[Intensify Nx50]] PCB from top side]] |
This is the intallation & user guide for the [[Intensify Nx50]] laser diode driver. Read it through before operating the device. | This is the intallation & user guide for the [[Intensify Nx50]] laser diode driver. Read it through before operating the device. | ||
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==Physical installation and cooling== | ==Physical installation and cooling== | ||
Nx50 should be mounted inside an enclosure by using spacer feet attached to the four corner holes. | Nx50 should be mounted inside an enclosure by using spacer feet attached to the four corner holes. | ||
− | [[File:IntensifyEfficiency.png | + | [[File:IntensifyEfficiency.png|thumb|right|400px|Nx50 (single board) efficiency vs load current at various laser diode forward voltages]] |
− | Nx50 has low power losses due to highly efficient multiphase switching converter technology. Power loss can be calculated by using the offered efficiency data as | + | Nx50 has low power losses due to highly efficient multiphase switching converter technology. Power loss can be calculated by using the offered efficiency data as reference. |
In most cases Nx50 is sufficiently cooled with '''natural convection'''. This is best achieved by mounting boards vertically and leaving at least 25 mm free air space around both sides. | In most cases Nx50 is sufficiently cooled with '''natural convection'''. This is best achieved by mounting boards vertically and leaving at least 25 mm free air space around both sides. | ||
However, if natural convection does not offer sufficient cooling (i.e. if peak surface temperature is near or exceeds 100°C), then '''forced convection''' is necessary. This can be achieved by placing a fan or blower on the side of PCB so that air flow passes along board surface. | However, if natural convection does not offer sufficient cooling (i.e. if peak surface temperature is near or exceeds 100°C), then '''forced convection''' is necessary. This can be achieved by placing a fan or blower on the side of PCB so that air flow passes along board surface. | ||
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==Wiring== | ==Wiring== | ||
− | + | ===CMD connector=== | |
− | === | + | CMD connector is the user side I/O of the driver. This connector contains the control and feedback signals. All signal lines of the port are ESD protected by dedicated suppressors. |
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Mating connector type is a 10 pin flat ribbon cable connector with 0.1"/2.54 mm pin pitch and a polarity key. See spec sheet of compatible connector [[Media:idc10pin_connector.pdf|here]]. | Mating connector type is a 10 pin flat ribbon cable connector with 0.1"/2.54 mm pin pitch and a polarity key. See spec sheet of compatible connector [[Media:idc10pin_connector.pdf|here]]. | ||
− | ==== | + | ====CMD pin-out==== |
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{| class="wikitable" | {| class="wikitable" | ||
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− | ! | + | ! Header text !! Header text !! Header text |
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− | | 1 || PULSE | + | | 1 || PULSE || Pulse control. When low, output low current and when high, output setpoint current. |
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− | | 2 || | + | | 2 || GNDA|| Analog ground |
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− | | 3 || IMON | + | | 3 || IMON+|| Current monitor positive output (differential) |
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− | | 4 || | + | | 4 || IMON-|| Current monitor negative output (differential) |
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− | | 5 || VMON | + | | 5 || VMON+|| Voltage monitor positive output (differential) |
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− | | 6 || | + | | 6 || VMON-|| Voltage monitor negative output (differential) |
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− | | 7 || ISET+ | + | | 7 || ISET+|| Current setpoint positive input (differential) |
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− | | 8 || ISET- | + | | 8 || ISET-|| Current setpoint negateive input (differential) |
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− | | 9 || ENABLE|| | + | | 9 || ENABLE|| Enable input. When low, output enabled and high or open, output disabled. |
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− | | 10 || GND|| | + | | 10 || GND|| Power & digital ground |
|} | |} | ||
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====Digital signals==== | ====Digital signals==== | ||
All digital signals (PULSE & ENABLE) are referenced to GND and applicable voltage levels are: | All digital signals (PULSE & ENABLE) are referenced to GND and applicable voltage levels are: | ||
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! State !! Voltage range | ! State !! Voltage range | ||
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− | | Logic | + | | Logic low|| -0.3 .. 0.6V |
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− | | Logic | + | | Logic high|| 3.0 - 7.0 V |
|} | |} | ||
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====Analog signals==== | ====Analog signals==== | ||
− | Analog input | + | Analog input & output signals support [[differential signaling]] to cancel noise and ground loop induced error. These are designed to be compatible with another differential source as well as single ended systems. |
Connection to '''differential''' 0-10V analog I/O: | Connection to '''differential''' 0-10V analog I/O: | ||
{| class="wikitable" | {| class="wikitable" | ||
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− | ! Controller !! | + | ! Controller !! CMD signal |
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− | | Analog in 1 +|| IMON | + | | Analog in 1 +|| IMON+ |
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− | | Analog in 1 - || | + | | Analog in 1 - || IMON- |
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− | | Analog in 2 + || VMON | + | | Analog in 2 + || VMON+ |
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− | | Analog in 2 - || | + | | Analog in 2 - || VMON- |
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| Analog out 1 + || ISET+ | | Analog out 1 + || ISET+ | ||
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{| class="wikitable" | {| class="wikitable" | ||
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− | ! Controller !! | + | ! Controller !! CMD signal |
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− | | Analog in 1 || IMON | + | | Analog in 1 || IMON+ |
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− | | Analog in 2 || VMON | + | | Ground || IMON- |
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+ | | Analog in 2 || VMON+ | ||
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+ | | Ground || VMON- | ||
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| Analog out 1 || ISET+ | | Analog out 1 || ISET+ | ||
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| Ground || GND | | Ground || GND | ||
|} | |} | ||
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===Power=== | ===Power=== | ||
A regulated 12VDC power supply should be connected to hole terminals labeled '''GND''' and '''+12V'''. Required power is nearly directly proportional to output power plus losses. | A regulated 12VDC power supply should be connected to hole terminals labeled '''GND''' and '''+12V'''. Required power is nearly directly proportional to output power plus losses. | ||
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For example outputting 40A to 2.0V diode equals output power of 80W. With losses the needed power is about 85-90W which equals 7.0-7.5A @ 12V. | For example outputting 40A to 2.0V diode equals output power of 80W. With losses the needed power is about 85-90W which equals 7.0-7.5A @ 12V. | ||
===Laser diode=== | ===Laser diode=== | ||
− | Laser diode is connected to hole terminals labeled '''O+''' and '''O-'''. O+ goes to LD anode and | + | Laser diode is connected to hole terminals labeled '''O+''' and '''O-'''. O+ goes to LD anode and 0- to cathode. |
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==Connecting parallel== | ==Connecting parallel== | ||
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==Usage== | ==Usage== | ||
− | + | ===Basic usage=== | |
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===Pulsed usage=== | ===Pulsed usage=== | ||
− | + | ===Monitoring=== | |
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