Intensify Nx50

Intensify Nx 50 is a compact stackable constant current laser diode bar driver featuring the latest multiphase switched-mode topology delivering up to 50A continuous current at unforeseen efficiency. Parallel capability allows stacking multiple Intensify boards to scale up the current up to 150A. Intensify is intended for OEM applications such as fiber laser pumping, laser tooling and laser diode burn-in.

Intensify Nx50
Device type	Laser diode driver
Control modes	Current control
Status	In production & available from stock
Electrical
DC supply voltage	12 ± 1 VDC
Output current range	0.1 - 50A × number of stacked boards
Setpoint signals	Analog reference for current control, Digital signals for enable & pulsing
Feedback devices	On-board current & voltage sensing
Protections	Over temperature, under voltage, short circuit, laser diode protection
LD forward voltage	0.8 .. 5.0 VDC
Ripple current (typ @ 50A)	0.2A RMS, 1.25A pk-pk
General
Dimensions	94×77.5×15 mm
Configuration tool	No software tools needed
Web site	Intensify product site

Technical specifications

Power

Three Nx50 boards connected parallel by stacking

Nx50 (single board) efficiency vs load current at various laser diode forward voltages

Property	Value	Units	Remarks
Supply voltage	12 ± 1	V
Supply current	0.1 - 23 (1)	A	Depends on output power
Max output power	250 (1)	W	50A @ 5.0V
Output voltage	0.8 - 5.0	V	Determined by laser diode voltage drop
Output current	0 - 50 (1)	A	Continuous rating
Efficiency	95	%	Efficiency when Io > 20A and Vo = 5V

(1) For single Nx50 board. Multiply this by the number of stacked Nx50 boards.

Timing properties

Property	Value	Units	Remarks
Pulsed LD current rise time	0.5 typ	ms	Current rise from 10% to 90% of setpoint
Pulsed LD current rise time	0.6 typ	ms	Current fall from 10% to 90% of setpoint
Enable delay	< 60	ms	From disabled to enabled state
Disable delay	< 2	ms	From enabled to disabled state
Power-up/down sequence	Any order. Any I/O line states not causing spiking above setpoint

Inputs/outputs

Property	Value	Units	Remarks
Current setpoint voltage	0..10	V	0..10 V sets LD current between 0..50 A (1)
Current setpoint input impedance	51k (2)	Ω	Differential input
Current monitor output voltage	0..10	V	0..10 V represents LD current between 0..50 A
Current monitor output impedance	≤ 1k (2)	Ω
Voltage monitor output voltage	0..5.0	V	Represents LD voltage drop 1:1
Voltage monitor output impedance	≤ 1k (2)	Ω
Enable input voltage	-0.3..0.6 V or open circuit = disabled 3..26 V = enabled	V	Enable is 3.3V, 5V, 12V and 24V logic compatible
Pulse input voltage	-0.3..0.6 V or open circuit = logic low (current 100%) 3..26 V = logic high (current 3.5%)	V	Pulse is 3.3V, 5V, 12V and 24V logic compatible. Pulse high outputs current defined by setpoint, pulse low outputs current 0.035*setpoint.

(1) For single Nx50 board. Multiply this by the number of stacked Nx50 boards.

(2) For single Nx50 board. Divide this value by the number of stacked Nx50 boards.

Mechanical & environmental

Property	Value	Units	Remarks
Dimensions	94×77.5×15 (PCB) 107×77.5×15 (with J1 hooks)	mm	W×H×D
Operating temperature range	-40..85	°C	Non condensing. Output rating may derate at high temperature without forced convection
Reliability MTBF	1.2	106 Hrs	Per Bellcore TR-332 50% stress, Tamb = 40 °C
ESD protection	Exceeds ESD Protection to IEC61000-4-2 Level 4, ±12 kV discharge		All I/O lines

Literature

• Intensify Nx50 setup & user guide
• PDF flyer

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