EPC9126/EPC9126HC Development Board Quick Start Guide

PublishTime：2020-11-23

The EPC9126 and EPC9126HC development boards are primarily intended to drive laser diodes with high current pulses with total pulse widths < 3 ns (half amplitude pulse width). The board is shipped with an EPC2212 or EPC2001C (HC version) enhancement mode (eGaN®) field effect transistor (FET). The EPC2212 is an AEC-Q101 automotive qualified 100 V FET capable of current pulses up to 75 A, and the EPC2001C is a 100 V FET capable of current pulses up to 150 A. The development boards used the same printed circuit board with minor component changes in addition to the different FETs. Due to the fact that the basic design and behavior of the boards is nearly the same, the term EPC9126xx will be used to refer to either board, and only when necessary will one or the other board be called attention to. The EPC9126xx ships with the EPC9989 interposer board. The EPC9989 has a collection of break-away 5 mm square interposer PCBs with footprints for different lasers and a collection of other footprints. The use of the interposers allows many different lasers or other loads to be mounted while still being able to use the EPC9126xx. The boards do not include a laser diode, which must be supplied by the user.
The EPC9126xx comprises a ground-referenced eGaN FET driven by a Texas Instruments LMG1020 gate driver. The EPC9989 interposer provides multiple options for mounting laser diodes. The printed circuit board is designed to minimize the power loop inductance while maintaining mounting flexibility for the laser diode or other load. It includes multiple on-board passive probes for voltages and discharge capacitor current, and is equipped with SMA connections for input and sensing designed for 50 ohm measurement systems. In addition, the board includes a narrow pulse generator capable of sub-nanosecond precision, or the user can simply send the input to the gate drive directly. Finally, the board can also be used for other applications requiring a ground-referenced eGaN FET, e.g. Class E amplifiers or similar. A complete block diagram of the circuit is given in figure 1, and a detailed schematic in figure 7.
The datasheet should be read in conjunction with this quick start guide.In addition, there is an application note, AN027 eGaN FETs for Lidar – Getting the Most Out of the EPC9126 Laser Driver. While the note discusses Rev. 2 of the EPC9126xx, most of the information is applicable to Rev. 3.

Brand of Product：	EPC
Part#：	EPC9126 、 EPC9126HC 、 EPC2212 、 EPC2001C 、 EPC2001HC 、 EPC9126xx 、 EPC9989 More Part#
Product Category：	Development Board 、 High Current Pulsed Laser Diode Driver More
Application：	More
Data Type：	User's Guide More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	2020/09/09
Version Number：	Revision 3.0
Data Encoding：
Data Size：	912 KB

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