Latest 40V automotive-grade MOSFETs target motor control applications

Rated for operation up to +175C, Diodes Incorporated's new 40V DMTH4004SPSQ and DMTH4005SPSQ automotive-compliant MOSFETs are ideal for use in high ambient temperature environments, says the company. The DMTH4004SPSQ has been designed to meet the requirements of high-power (>750W) brushless DC motor (BLDC) applications, such as water and fuel pumps, while the DMTH4005SPSQ is suited to lower power BLDC applications, such as auxiliary pumps and heating, ventilation and air-conditioning (HVAC) systems. Developed to meet the rigorous demands of three phase BLDC motor control applications, the DMTH4004SPSQ and DMTH4005SPSQ are 100% avalanche tested, ensuring a robust design that is able to withstand the high pulses of reverse avalanche energy that can occur with inductive loads. Furthermore, at a gate-source voltage of 10V, the DMTH4004SPSQ and DMTH4005SPSQ feature maximum on-state resistances of 2.7mohm and 4mohm respectively, which together with their low gate charge ensures that power losses are kept to a minimum. The efficiency of these MOSFETs is further enhanced by the low thermal resistance of the POWERDI5060-8 package. This allows for a maximum junction temperature of 175C ensuring that these MOSFETs are able to operate in high ambient temperature environments.