MAIMAN ELECTRONICS SF6100 User Manual

Laser diode driver

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SF6100
Laser diode driver
Datasheet &
User Manual
Before powering on your driver, read this manual thoroughly.
If you have any doubt or suggestion, please do not hesitate to contact us!
Maiman Electronics
e-mail: info@maimanelectronics.com
web site: www.maimanelectronics.com
v2.2.2 ‒ 2023

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Summary of Contents for MAIMAN ELECTRONICS SF6100

  • Page 1 SF6100 Laser diode driver Datasheet & User Manual Before powering on your driver, read this manual thoroughly. If you have any doubt or suggestion, please do not hesitate to contact us! Maiman Electronics e-mail: info@maimanelectronics.com web site: www.maimanelectronics.com v2.2.2 ‒ 2023...
  • Page 2 v2.0.2: Correction in the dimension of a command 0307 v2.1.4: Important additions to using the Current Set input v2.1.6: Added paragraphs «Overall dimensions and weight» and «Functional schemes» v2.1.7: Minimum input voltage corrected to 12V. v2.2.1: Paragraph «Warranty», error-triggered fall-time values (Paragraph «Electrical characteristics»), examples of digital commands, and correction in paragraphs «how to get started»...
  • Page 3: Table Of Contents

    Maiman Electronics SF6100 Table of content 1. Features ............................... 3 2. Applications............................3 3. Description ............................3 4. Package set ............................3 5. Overall dimensions and weight ......................3 6. Absolute maximum ratings ........................3 7. Recommended operating conditions ....................4 8.
  • Page 4: Features

    Maiman Electronics SF6100 1. Features 3. Description  The SF6100 is a non isolated DC/DC SMPS Low current ripple  (POL) with constant current output. Driver No need to adjust voltage produces high stability and low ripple  Soft-start current. Protection features include an over ...
  • Page 5: Recommended Operating Conditions

    Maiman Electronics SF6100 7. Recommended operating conditions UNIT Input voltage (V Operating temperature °C Analogue control pins to GND RS-232 RXD to GND RS-232 TXD to GND UART RXD to GND UART TXD to GND 8. Power supply requirements The driver requires a DC power supply with line regulation ± 1%. The power supply must be able to cover the driver output power and losses.
  • Page 6 Maiman Electronics SF6100 AUX SUPPLY +/- 15V accuracy +/- 2 +/- 15V output current 5V accuracy +/- 1.5 5V output current INTERNAL MEASURMENTS Internal measurements accuracy Current monitor pin voltage vs. output current Voltage monitor pin voltage vs. output voltage...
  • Page 7: Typical Performance Characteristics

    Maiman Electronics SF6100 10. Typical Performance Characteristics Figure 1 – Power dissipation vs. output current at full load Figure 2 – Efficiency vs. output current at full load Figure 3 – Power dissipation vs. output current at light load Figure 4 – Efficiency vs. output current at light load...
  • Page 8 Maiman Electronics SF6100 Figure 5 – Regulation characteristic: dotted – ideal, solid – real 5A/div 100us/div Figure 6 – Typical start up sequence Figure 7 – Typical stop sequence...
  • Page 9: Functional Schemes

    Maiman Electronics SF6100 11. Functional schemes Analogue interface Figure 8 – Analog interface functional scheme Power unit Figure 9 – Power unit functional scheme...
  • Page 10: Pin And Terminal Functions

    Maiman Electronics SF6100 12. Pin and terminal functions Please, note polarity! Never ground any lead of the output, this may cause permanent damage to the laser diode and the driver! Never use any grounded probes (e.g. from the oscilloscope) at the output!
  • Page 11 Maiman Electronics SF6100 Digital control connector Wurth WR-MM 6901 5700 08 72 or TE Connectivity 215083-8 Description UART RXD RS-232 RXD UART ТXD RS-232 TXD +5V auxiliary (duplicates pin 4 of analogue control connector) Interlock (duplicates pin 5 of analogue control...
  • Page 12: Analogue Control Description

    Maiman Electronics SF6100 13. Analogue control description Enable The enable pin is active high 3.3V and 5V compatible logic input. Driver operates when enable pin is high. To ensure correct start-up without overshoot, the soft-start sequence initiates when the enable pin becomes high.
  • Page 13: How To Get Started

    Maiman Electronics SF6100 NTC Interlock Thermistor connection. Allows you to measure the temperature of a laser or other devices. The measurement result is readable by the digital interface. Set upper and lower limits of the temperature at the outlet of which driver operation is blocked. When the temperature returns to the specified range, the driver operation resumes.
  • Page 14: Digital Control Description

    Maiman Electronics SF6100 18. Digital control description When the input voltage applied the driver is always in “analogue current set, external enable and allowing interlock” state. Any other state should be set any time after powering the driver if needed.
  • Page 15 Maiman Electronics SF6100 If the device could not recognize a command, it returns an error message with error code. The format and codes of errors Error (returned Reasons (one or few) command) E0000 1) Internal buffer of device is overflowed.
  • Page 16 Maiman Electronics SF6100 1 – Device is powered on 0 bit (always = 1) 0 – Stopped; 1 – Started Current set: 0 – External; 1 – Internal State of the device 0700 Enable: (bit mask) 0 – External; 1 – Internal External NTC Interlock: 0 –...
  • Page 17 Maiman Electronics SF6100 2) For the state of the device, 0700: To request value, send the following command: "J0700" in text or "4a 30 37 30 30 0d" in hex. Answer will be: "4b 30 37 30 30 20 30 30 44 35 0d" in hex, "K0700 00D5" in text, 00D5h > 11010101 in bin >...
  • Page 18 Maiman Electronics SF6100 The maximum duration depends on the set value of the frequency. When you change frequency, a new value of the maximum duration is compute automatically. The duration of pulse cannot be less than 2 ms and more than period of frequency minus 2 ms. For low frequencies the duration cannot be more than 5000 ms.
  • Page 19: Digital Control Description (Extended)

    Maiman Electronics SF6100 19. Digital control description (extended) WARNING! Extended protocol recommend for advanced users only. In addition, it might be use for integration of the device with other devices. Use the parameter number 0704h for configure the extended protocol. In extended...
  • Page 20 Maiman Electronics SF6100 Text-plain mode All commands in text-plain mode should be in ASCII. WARNING! If you enable the checksum it will change format of commands. After <CR> symbol you will be write 2 bytes of checksum and last byte will be <LF> (0Ah – “new line” symbol). Checksum is computed for all bytes of command before checksum bytes (including<CR>...
  • Page 21 Maiman Electronics SF6100 Binary mode The binary mode has a significant difference. In this mode, data are exchanged in binary form. Length of any type of command is 8 bytes! In this mode, next options are always enable and you cannot disable it: return a new value of parameter for P-type commands and checksum. The format of binary mode commands is represented in table 8.
  • Page 22: Mechanical Dimensions

    Maiman Electronics SF6100 20. Mechanical dimensions All dimensions are in millimeters. You can download the 3D-model of the driver at maimanelectronics.com in the downloads section of the product page 21. Warranty In compliance with the provisions of Conditions limited warranty the Buyer has the right to guarantee during the one year period.

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