Industry – Driving Industrial BLDC Motor with Diotec’s DIW120SIC028
The electrification of our environment is becoming more widespread every day, reflecting the growing demand for more environmentally friendly and sustainable energy sources. As a result, electric motors are becoming increasingly important in this transition. Whether implemented with BLDC or AC motors, their versatility is remarkable, from cooling your body perfectly on a hot summer's day to powering your fancy electric vehicle for your daily commute. However, the biggest question remains: how can we further improve our ability to efficiently drive extremely large amounts of energy for these highly demanding applications?
Traditionally, designers would always choose to parallel 2 or 3 MOSFETs together. However, in most cases, when driving BLDCs with the conventional MOSFETs, this approach would often require a certain level of circuit complexity, as they need to be turned on simultaneously to avoid any further complication. In this scenario, two options could be suggested: Driving from a single unified gate drive or individual gate drives for each of the MOSFETs. The latter would increase the overall cost of the circuit, while not proving to be effectively better, as the designer would still have to overcome the propagation time between them. Therefore, the former method is preferred in most cases. In addition, paralleling MOSFETs is not as simple as it sounds, as many factors need to be taken into account, such as selecting an appropriate gate resistance and implementing a snubber circuit to suppress the effect of stray inductance in the PCB. If not implemented correctly, it could cause internal destruction due to the uneven load distribution and threshold voltage deviation expected from its "positive temperature coefficient" nature. Save yourself the headache and opt for our exclusive new DIW120SIC028 which could be your potential missing piece of the puzzle and driving the ever increasing power demanding BLDC motor would never be difficult.
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