PCO-6511 CW Laser Diode Driver
Precision CW Control
The PCO-6511 is a compact and economical CW current source designed to drive laser diodes. It features an adjustable output current of 3.0 A to 10.0 A and a compliance voltage of 10 V. Ease of Setup and Operation
Output current is set by an on-board trim potentiometer or by an external voltage (jumper selectable). Connector JP1, a 2x6 male header, is used for all control signals.
Power Input Connections
Input power is connected via two #6 screw terminals, TERM1 (+) and TERM2 (‒), 18 AWG, or via J3, a 3-pin Molex connector. The compatible Molex part numbers are 39-01-4030 (housing) and 5556 (female terminals).
Power Output Connections
The load is connected via two #6 screw terminals, TERM3 (+) and TERM4 (‒), 18 AWG, or via J4, a 5-pin Molex connector. The compatible Molex part numbers are 39-01-4050 (housing) and 5556 (female terminals).
NOTE: Do not operate the PCO-6511 without a load unless the crowbar is activated.
Ordering Information
PCO-6511 CW Current Source
Amplitude
Current output range
3.0 A to 10.0 A
Setpoint resolution
1 mA
• Trim potentiometer
JP2 in place
• External voltage control
JP2 removed
• External setpoint
0 V to 4.095 V
• 5.0 V reference output current
5 mA maximum
Diode forward voltage
10 V maximum
Maximum output power
100 W
Output Parameters
Ripple current
< 70 mA @ 10 A
Polarity
Positive
Crowbar (hold low for output)
0 V = operate
Current Monitor
Current monitor scale factor
4.06 V = 10 A
Connector
JP1 (+ pin 10) (ground pin 9)
Input Parameters
DC input voltage (VCC)
12 V to 16 V DC
Shutdown
0 V to 5.5 V
General
Size (H x W x D)
3.56 cm x 5.08cm x 13.97 cm
Weight
136.1 g
Operating temperature
15° C to 40° C
(Operation above 8 A requires forced air cooling)
Notes
Warranty: One-year parts and labor on defects in materials and workmanship.The PCO-6511 current source meets or exceeds these specifications. All specifications are measured with a low inductance twisted pair interconnect cable to a 1.016 Ω load. Laser diode not included. Specifications information subject to change without notice.
Theory of Operation
The heart of the PCO-6511 is a step-down DC/DC converter, consisting of a MOSFET, a diode, an inductor and an output filter. The input/output current ratio is the inverse of the input/output voltage ratio. If losses are disregarded, the input power in watts equals the output power in watts.
A safety feature referred to as a “crowbar” circuit is added in the form of a power MOSFET in parallel with the load. When the crowbar is on the laser diode is bypassed through the MOSFET.
Signal-to-Noise Ratio
The signal-to-noise ratio is defined as (VPEAK-TO-PEAK) / (VAVERAGE). It is the maximum peak-to-peak voltage of each spike divided by the average voltage.
Signal-to-Noise Ratio, 3A ≤ 3.2%
Signal-to-Noise Ratio, 4 A to 10 A ≤ 2.0%
JP1 Control Connector
2x6 female header socket. Use FCI 65043-031LF housing and FCI 48236-000LF contacts, 22 AWG.
• Pins 1, 3, 5, 7, 9, 11: Ground
• Pin 2: Reference voltage output (5 V ±0.5 V)
• Pin 4: External Control (analog input). If JP2 is removed, 0 V to 4.095 V applied to this input sets the output current amplitude.
• Pin 6: VCC output
• Pin 8: Shutdown
- No connect = operate
- 5 V (connect pins 8 and 2) = OFF
• Pin 10: Current Monitor (IMON) o Analog output: 4.06 V = 10 A
• Pin 12: Crowbar
- No connect = output load bypassed
- 0 V (connect pins 12 and 11) = operate
描述 [描述] PCO-6511是一种紧凑和经济的连续波电源,用于驱动激光二极管。