Three-Phase Gate Driver Evaluation Boards

Infineon has developed two boards for the design-in process of battery-powered BLDC motor-drive applications. These boards can be used for evaluating and measuring characteristic curves and for checking datasheet specifications. They must be used in a laboratory environment by trained power-electronic engineers adhering to safety requirements.

The EVAL-6ED2742S01QM1 evaluation kit consists of a three-phase inverter power board with a 160 V rated MOTIX™ 6ED2742S01Q (in a 5 x 5 VQFN-32 package) three-phase gate driver driving six 150 V rated OptiMOS™ MOSFETs BSC074N15NS5 (5 x 6 Super SO8). Integrated bootstrap diodes on the 6ED2742 supply the three external high-side charging bootstrap capacitors and support 100% duty-cycle operation by a trickle-charge pump. Protection features include undervoltage lockout, overcurrent protection with a configurable threshold, fault communication, and automatic fault clear. The output drivers feature a high-pulse current buffer stage designed for minimum driver cross-conduction. A current-sense operational amplifier (CSA) with a selectable gain is integrated between the V_SS and COM.

The EVAL-2ED2742S01 evaluation kit consists of a three-phase inverter power board with a 160 V rated MOTIX 2ED2742S01Q half-bridge SOI gate driver driving six 150 V rated OptiMOS MOSFETs (BSC074N15NS5). The 2ED2742 with typical 1 A source and 2 A sink currents is available in a small footprint VSON10, 3 mm x 3 mm package for N-Channel MOSFETS. Integrated bootstrap diodes are used to supply the external high-side bootstrap capacitor. Protection features include undervoltage lockout on both V_CC and V_B pins.

The 6ED2742 and 2ED2742 are fully qualified for industrial applications according to the relevant tests of JEDEC78/20/22. Both boards have an M1 connector that is used to interface with the iMOTION™ modular application design kit (MADK) control card (EVAL-M1-101T).