Micro Flex Drive V5 Manual
Contents
1. FlexDriwe ls i Warning Case isolated from diode These wiring diagrams assume a laser output power below 5mW If your CLASS Ib LASER PRODUCT laser product optical output is greater than 5mW you must adhere to CDRH regulations which may require additional wiring including interlocks Connect diode to case pin Maximum current limitations for full input voltage range The Micro FlexDrive is built using the latest technology and is designed to have a very wide range of output currents and voltages However not every combination of input voltage output voltage and output current is useable For example a 5V load cannot be powered at 1 Amp with an input voltage ov 2 0V Here are the recommended output current ranges for the full 2 0 5 5V input range per output voltage 75 400mA buck boost 5V out 75 800mA buck boost 3V out 75mA 1 5A 2 0V out with 4 2 3 0V in li ion A good rule of thumb is that Vout Volts Iout Amps Vin Volts lt 1 2 For powering high current gt 500mA 1 8V diodes a series shottky rectifier is required so that the output voltage is 2 2V or greater When powering loads above 500 mA and below 3V a heatsink on the black 5 pin chip on the back of the driver is required An electrically insulating thermal epoxy to the heatsink or casing is recommended Driver Fitment The Micro FlexDrive can easily fit in most laser cases including AAA powered lasers and even inside the A1x1z modules2. Care should be taken not to allow the driver to contact conductive sides of the laser casing In the event that the casing does come close to the driver you can wrap the driver in a single layer of insulating electrical tape to prevent shorts to the casing Photo of FlexDrive V4 Dimensions not different from V5
3. Micro Flex Drive V5 Manual 2009 Nautilus Integration The Micro FlexDrive is a high efficiency switching current regulator that can be powered by battery combinations which result in a Voltage of 2 0 5 5V DC and up to 6 4VDC with a diode in series This includes 2 4 AAAs AAs Cs Ds and single lithium batteries primary and rechargeable The driver operates as a current regulated source varying the output voltage above and below the battery voltage as necessary to meet the current output setting In operation the driver will drain the power source until its voltage reaches 2 0V and then will shut off This combined with the high efficiency of the driver provides the maximum runtime possible for portable lasers Warning This driver is a current source mode driver Do not operate it without a load or with a short circuit output damage to the driver may result Diode Photo of FlexDrive V4 Contacts not different from V5 Current Setting The Micro FlexDrive has five output current ranges listed in the diagram below Each range listed in approximate there is variation from unit to unit so test the closest range to your desired current and work your way up or down the scale Removing the end resistor has the effect of decreasing the output current slightly when you are in ranges 2 4 The default 65 100mA range requires no changes The other ranges require solder jumpers as shown To adjust and set the diver curren
4. t a load is required A series of 3 or 4 1N4001 diodes and a 1 to 0 2 ohm resistor is recommended for use as a dummy load Use the Voltage across the dummy load resistor to determine current Output current is adjusted via the potentiometer trimmer An insulated screwdriver and a light touch are recommended for adjustment 65 100mA 100 412mA 412mA 1 1A 500mA 1 5A Photos of FlexDrive V4 Contacts not different from V5 Powering the driver If 6V or greater battery source is to be used the input voltage must be dropped to no greater than 5 8VDC For example if two Lithium primary CR123As are used each with a maximum surface charge voltage of 3 2V a 1N4000 series diode should be placed in series with the driver power input The FlexDrive V5 contains built in battery reverse polarity protection The battery negative connection and the diode cathode connections are continuous As such if the battery is connected to the laser casing at the battery and the laser diode cathode is connected to the casing as well only the diode cathode lead needs to be connected to the driver to complete the circuit for both battery and diode connections Wiring Diagrams for FlexDrive with Various Diodes Caze Diode FlexDriwe 7 a DANGER Case connected red diode Case Diode i Case connected red diode VISIBLE ANDIOR INVISIBLE LASER RADIATION AVOID DIRECT EXPOSURE TO BEAM Case Diode
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