PCA-9150 [DEI]
Pulsed/CW Laser Diode Driver Module;
| 型号： | PCA-9150 |
| 厂家： | 
Directed Energy |
| 描述： | Pulsed/CW Laser Diode Driver Module |
| 文件： | 总2页 (文件大小：298K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PCO-6141 Pulsed/CW Laser Diode Driver Module Datasheet
This architecture provides a high-performance
driver in a small form factor, with high operating
efficiency and low stored energy. At 60 A output
current, the stored energy in the driver is
approximately 7 Joules, dramatically lower than
the stored energy in comparable linear current
sources.
System Operation
The PCO-6141 requires user-supplied +24 VDC
support power, a CMOS (+5 V) gate signal, and
a TTL-level enable/disable signal. The high
current output is derived from the +24 VDC input.
The output pulse width and frequency are
controlled by the gate signal. The output current
Precision Pulse Control
The PCO-6141 is a compact, OEM-style high
power pulsed current source designed to drive
diode lasers, bars and arrays in pulsed, QCW or
CW modes. It delivers output current variable
from 1 A to 60 A, pulse widths variable from <100
ns to DC, and pulse repetition frequencies
variable from single-shot to 500 KHz at duty
cycles up to 100%.
amplitude is controlled by
potentiometer.
a
PCB-mount
To protect the laser diode and the driver, circuitry
is incorporated into the driver that disables the
output if the +24 VDC support power drops below
18 V. Clamp diodes are incorporated into the
output network to protect the laser diode against
reverse voltage conditions.
The PCO-6141 features
a
user-adjustable
The rugged, compact design and high-power
capability of the PCO-6141 make it an excellent
OEM choice for driving high power laser diodes.
variable rise time control. This innovative feature
allows the user to adjust the rise time within a
range of <12 ns to >1.5 µs by means of a PCB-
mounted potentiometer, to optimize the driver’s
rise time for the user’s application.
The PCA-9150 optional current monitor is a 0.01
Ohms resistor with a 50 Ohm series termination.
When terminated into 50 Ohms, the output is the
equivalent of a 0.005 Ohm resistor with scaling of
200 A/V and can be viewed with an oscilloscope
providing a straight-forward means to observe the
The PCO-6141 is based on a hysteretic, average
current, switch-mode regulator. This type of
regulator is a variable frequency, variable pulse
width design which maintains current in an
energy storage inductor between a minimum and
maximum level. The ripple is limited to the
minimum and maximum current determined by
the hysteretic controller. The regulator is started
when the TTL "enable" line is taken high and runs
as long as the enable is high. The use of the
hysteretic regulator provides a large input range
and high efficiency.
diode current waveform in real-time.
The
resistor is in the negative lead and the BNC shield
is connected to the negative out.
Ordering Information
PCO-6141
PCA-9160
PCA-9150
Diode Driver Module
1-Meter Output Stripline Cable
Optional Current Monitor Board
The PCO-6141 is provided with a mating I/O
connector and sockets, and a 1-meter output
stripline cable assembly.
A shunting switch shorts the output of the
regulator until output current is needed. The
pulse is generated by opening the shunt switch
for the length of the input pulse. The pulse rise
and fall times are then limited only by the
stray/parasitic capacitance and inductance of the
shunting switch and output leads.
No power is dissipated in the driver until it is
enabled. When enabled, at 60 A maximum output
approximately 80 W is continuously dissipated in
the driver to maintain the current in the energy
storage inductor.
For more information: 970.493.1901 or sales@directedenergy.com
Document #9200-0259 Rev B1. © Copyright 2019 Directed Energy, Inc. All rights reserved.
PCO-6141 Pulsed/CW Laser Diode Driver Module Datasheet
Pulse Amplitude
Output Current Range
Means Of Adjustment
0 A to 60 A
Trimpot mounted on PCB, or
external 0-5 V or 0-10 V Analog Voltage, jumper-selectable.
Output Polarity
Pulse Rise Time
Positive
Variable <12 ns to >1.5 µs
(10%-90%) , user-adjustable trimpot mounted on PCB
Pulse Width
100 ns with 6 V Compliance
200 ns to DC
Pulse Frequency Range
Maximum Duty Cycle
Output Pulse Ripple/Droop
Jitter
Single Shot to 500 KHz
100%
<1 A, <1.7% at 60 A output
<3 ns First Sigma
>65% at 50% duty cycle, 60 A
output
50 kHz, 10 µs Pulse Width, 60 A Output
Efficiency
Output Connector
High Current DSUB, PCB-
Mounted
Diode Forward voltage
Amplitude
20 V maximum
Gate Input
Type
Gate Input
Positive Edge Trigger
+5 V CMOS
250 kHz, 1.6 µs Pulse Width, 60 A Output
Current Monitor Optional PCA-9150
Current Monitor
200 A/V terminated into 50 Ω
±3% of the actual current
BNC
Current Monitor Connector
Control Functions
Output Enable/Disable
TTL Input, High = Enabled
General
Input Power
+24 VDC ±10% unregulated
0°C to 40°C
Air cooled
Operating Temperature
Cooling
Dimensions (H X W X D)
5.2 cm x 22.6 cm x 15.9 cm
500 KHz, 172 ns Pulse Width, 60 A Output
Specifications are subject to change without notice.
* The idle power consumption (power consumed when the
driver is enabled but not pulsing) varies non-linearly with
output current, and can be approximated by the formula
P
IDLE=I2 x 0.023 where I is the output current setpoint. When
pulsing, the switching losses (PSW) are about 30 W. Therefore
the 24 VDC power requirements can be approximated by the
formula PSW + [IOUTVOUT + IOUT2(0.03)]DC + PIDLE (1-DC)
where VOUT is the diode forward voltage and DC is the duty
cycle. For example, at 40 A output current, 10 V diode voltage
and 30% duty cycle, the power consumption is 30W + [40A x
10V + 40A2 x 0.03] x 0.3 + [40A2 x 0.023] x (1-.3) = 190 W.
The +24 VDC support power should be sized to provide this
average power.
* The driver is mounted on an air-cooled aluminum heat
>3.1 µs Rise Time, 8.8 µs Pulse Width, 60 A Output
spreader 1/4” (0.635 cm) thick.
The heat spreader
temperature should not exceed 45°C. Forced-air and/or
mounting the heat spreader to a larger heat sink or cold plate
may be required in applications in which the heat spreader
temperature exceeds 45°C.
For more information: 970.493.1901 or sales@directedenergy.com
Document #9200-0259 Rev B1. © Copyright 2019 Directed Energy, Inc. All rights reserved.
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