EPC91116 – High Frequency 40 V, 17 A Laser Driver using EPC2203
The EPC91116 is a demonstration board suitable for driving laser diodes with short current pulses, achieving minimum pulse widths as low as 5 ns. It supports peak currents of more than 10 A, and a bus voltage of 40 V. This high-speed performance is enabled by EPC’s gallium nitride enhancement mode (eGaN®) FET technology. The board utilizes the fully automotive qualified EPC2203 , an ultrafast eGaN transistor with a very low total gate charge (QG) of 670 pC. The eGaN transistor has a rated pulse current of 17 A, a rated voltage of 80 V, and a very low RDS(on) of 80 mΩ while maintaining an exceptional small footprint of 0.9 x 0.9 mm.
The EPC91116 board is accompanied by the EPC9989 interposer board to provide the user with a simple means of mounting a small set of commercially available lasers. The EPC9989 comprises a collection of breakaway 5 mm square interposer PCBs with footprints for different lasers and various alternative loads. The use of the interposers allows many different lasers or other loads to be mounted on the demonstration boards. The boards do not include a laser diode or load, which must be supplied by the user.
Features
- Fast current pulse generation with nanosecond pulse width
- Integrated high bandwidth measurements for key waveforms
- Optional narrow pulse generator to simplify operation with typical pulse and function generators
- The input pulse can be sourced from wide range of logic family voltage levels
Applications
- Time of flight (ToF) measurement
- Gesture recognition
- Gaming
- Driver awareness
- Robotic vision
- Industrial safety
- ToF module using VCSEL laser for camera modules, laptops, and smart phones
- Control switch for boost, flyback, or forward converters
- Class-E amplifier