MANHASSET, NY -- STMicroelectronics has extended its family of motor-driver modules to suit applications where assembly space is limited.
The company has added two motor drivers to its range of SLLIMM (Small Low-Loss Intelligent Molded Modules), which will enable domestic appliances to offer better energy ratings. The STGIPN3H60 and STGIPN3H60A are each housed in a 29.15 x 12.45mm package with 26 leads, making them ST’s smallest such devices, according to the company.
Inside each module is a three-phase half bridge including high-voltage gate drivers and IGBT power switches, plus freewheeling diodes and bootstrap diodes. The bootstrap diodes supply high-voltage circuitry on the motor side as the driver module is starting up. Integrating it in the module delivers an additional saving in external components, and is achieved using a patented technique unique to ST, according to the company.
The new SLLIMM nano family extends the portfolio of SLIMM intelligent power modules for appliance motor drivers in a single module that connect directly between the central microcontroller and the motor.
The STGIPN3H60A has basic motor-drive capabilities for price-sensitive applications, while the STGIPN3H60 includes an uncommitted op-amp, which can be used as a feedback loop of the sensed motor current to the microcontroller. There is also a comparator for use in over-temperature or over-current shutdown. The STGIPN3H60 also has a smart shutdown function capable of generating a simple fault indication or shutting the driver down safely within 200ns in an emergency.
STMicro also offers its Steval-IHM036V1 demonstration board, a universal, fully-tested design consisting of a three-phase inverter bridge based on the STGIPN3H60 and the STM32F100C6T6B MCU.