Five semiconductors in AcePack SMIT packages enhance power density
Automotive-grade devices from STMicroelectronics run cooler in the surface mount AcePack SMIT package which eases assembly and enhances power density over conventional TO-style packages, said ST Microelectronics.
Engineers can choose from two STPower 650V MOSFET half bridges, a 600V fast diode bridge, a 1,200V half-controlled full-wave rectifier, and a 1,200V thyristor-controlled bridge leg.
All devices meet automotive-industry requirements and are suitable for electric vehicle on-board chargers and DC/DC converters, as well as industrial power conversion.
ST’s AcePack SMIT surface mount package is an insulated package with the thermal efficiency of an exposed drain. It allows direct-bonded copper die attachment for efficient top-side cooling. The 4.6cm2 exposed metal topside of the AcePack SMIT permits easy attachment of a planar heatsink. This creates a space-saving low profile that maximises thermal dissipation for greater reliability at high power, said ST. The module and heatsink can be placed using automated inline equipment, which saves manual processes and boosts productivity.
While minimising the stack height and enhancing power density, the topside cooling design and 32.7 x 22.5mm package footprint allow 6.6mm lead-to-lead creepage distance. The tab-to-lead insulation is 4,500V rms. The package also has low parasitic inductance and capacitance.
The SH68N65DM6AG and SH32N65DM6AG 650V-MDmesh DM6 MOSFET half bridges now available in AcePack SMIT are AQG-324 qualified. Their Rds(on) (max) of 41 mOhm in the SH68N65DM6AG and 97 mOhm in the SH32N65DM6AG ensures high electrical efficiency and low thermal dissipation. The MOSFETs can be used in DC/DC converters for both on-board charging and high voltage to low voltage section. Their multi-role flexibility helps streamline inventory and simplify procurement.
The STTH60RQ06-M2Y 600V, 60A full-wave bridge rectifier comprises fast diodes with soft recovery characteristic and is PPAP capable for use in automotive applications.
The STTD6050H-12M2Y 1,200V, 60A half-controlled single-phase AC/DC bridge rectifier is AEC-Q101 qualified and has high noise immunity with dV/dt of 1000V per microsecond.
The STTN6050H-12M1Y is a 1,200V, 60A half bridge that comprises two internally connected thyristors (silicon-controlled rectifiers – SCRs). The MOSFET is AEC-Q101-qualified for use in automotive on-board charging, charging stations and industrial applications such as AC/DC conversion in motor drives and power supplies, single- and tri-phase controlled rectifier bridges, totem-pole power-factor correction and solid state relay.
All devices are in production now.
