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75 Watt Variable Power Module with Temperature Protection and USB
The DNA 75 is a power regulated digital switch-mode DC-DC converter for personal vaporizers. It
features Evolv's patented Wattage Control, Temperature Protection, Preheat, OLED Screen, Reverse
Polarity Protection, onboard programmable multicolor LED and waterproof onboard buttons. The USB
port and Evolv's EScribe software can be used to customize or monitor the user experience. The DNA 75
runs from a single lithium polymer or lithium ion battery, and features battery monitoring and
integrated 1A charger.
Specifications
Output Power
Output Voltage
Output Current, continuous
Output Current, instantaneous peak
Atomizer Resistance, temperature sensing wire, cold
Atomizer Resistance, Kanthal wire
Temperature Limit
Input Voltage
Input Current
Input Current, pulse
Screen On Current
Quiescent Current
Power Down Current
Efficiency
Weight
Footprint
Thickness
Screen size
Evolv DNA 75
Minimum
Typical
1 Watt
.2 Volt
See Graph
.15 Ohm
See Graph
.25 Ohm
°
°
200
F
450
3.0 Volts
3.7 Volts
.5 Amps
12.0 Amps
26mA
7mA
0mA
85%
15g
.71" x 2.60"
.32"
.91" OLED
Max
75 Watts
6.2 Volts
30.0 Amps
40.0 Amps
See Graph
See Graph
°
F
600
F
4.2 Volts
28.0 Amps
32.0 Amps
18mm x 66mm
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Summary of Contents for EVOLV DNA 75
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Page 1: Specifications
Polarity Protection, onboard programmable multicolor LED and waterproof onboard buttons. The USB port and Evolv’s EScribe software can be used to customize or monitor the user experience. The DNA 75 runs from a single lithium polymer or lithium ion battery, and features battery monitoring and integrated 1A charger. -
Page 2: Table Of Contents
Contents Specifications ..............................1 Temperature Protection ..........................3 Preheat ..............................3 Attaching a New Atomizer ........................4 Output Power ..............................4 Operation ..............................5 Display ............................... 5 Alternate display items ..........................5 Modes ............................... 6 Profiles ..............................7 Coil Materials ............................7 Error Messages ............................ -
Page 3: Temperature Protection
Temperature Protection The DNA 75 directly measures and limits the temperature of the heating coil during operation. By preventing the coil from becoming too hot regardless of fluid, wicking or airflow, a variety of undesirable situations can be prevented. For example, appropriate temperature settings will prevent the wicking material from charring, which compromises taste and introduces unintended chemicals into the vapor. -
Page 4: Attaching A New Atomizer
If a new atomizer is attached to the DNA 75 before it has cooled down, the temperature may read and protect incorrectly until the new atomizer cools. -
Page 5: Operation
Operation Basic operation of the DNA 75 is as follows. To wake the device from power off state, tap the Fire button. To generate vapor, press the Fire button. To change the wattage setting for more or less vapor, click or hold the Up and Down buttons. -
Page 6: Modes
To do so, while locked hold both the Fire and Up buttons for two seconds to enter Resistance Lock mode. In this mode, the DNA 75 will use the present atomizer cold resistance without refinement until the atomizer is disconnected or the resistance lock is disabled. -
Page 7: Profiles
Profiles The DNA 75 allows you to save and select between eight groups of output settings. Each group of output settings is called a Profile. To switch between profiles, put the DNA 75 into Power Locked mode by pressing and holding both the up and down buttons simultaneously for two seconds. From power locked mode, to cycle between profiles, double click the Up or Down button. -
Page 8: Auto Power Down
Ohms Too High: The resistance of the atomizer coil is too high for the current wattage setting. If this happens, the DNA 75 will continue to fire, but will not be able to provide the desired wattage. The Ohms Too High message will continue to flash for a few seconds after the end of puff. -
Page 9: Charger
Charger The DNA 75 has a built in 1A USB charger. It automatically detects the type of USB power supply it is connected to, so it can be plugged into standard PC USB ports or higher power chargers. Battery monitoring The DNA 75 contains a full battery management system that continuously monitors the state and health of the battery both under load and while idle. -
Page 10: Pinout (Shown Bottom Side)
Pinout (shown bottom side) Pin Number Pin Name Function Power output. Fire + Positive side of the fire button. Fire- Negative side of the fire button. Down- Negative side of the power down button. Down+ Positive side of the power down button. Positive side of the power up button. -
Page 11: Wiring
The DNA 75 runs from a single lithium polymer type battery pack or round lithium ion 18650 type battery. The DNA 75 can use multiple cells in a parallel type wiring configuration as long as the maximum input voltage is 4.2v. -
Page 12: Assembly
Installing the Screen The OLED screen mounts to the DNA 75 using an 8 pin ZIF socket and a flexible cable to allow for design flexibility. The cable can be bent or folded (once) but care should be taken to not apply tension or strain to the area where the cable attaches to the screen itself. -
Page 13: Mounting
With careful design, the mounting pads can be used to ground the chassis to the DNA 75, and pass the output current through chassis to the connector. However, if using this method, ensure that the PCB remains in good contact with the board at all times. Split lock... -
Page 14: Mechanical Dimensions
Mechanical Dimensions Evolv has 3D models of the DNA 75 available on their website in IGES, STP and Solidworks format.
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