“Both boards are turn-key solutions for low power compressors that can be easily copied by customers to build final mass-production application boards,” according to the company, although the associated paperwork for both carries the caveat: “Environmental conditions have been considered in the design… … the design is not qualified in terms of safety requirements, manufacturing and operation over the entire operating temperature range or lifetime”.
- REF_Fridge_D111T_MOS (below) is a three-phase inverter with IMD111T-6F040 driver IC and IPN60R1K0PFD7S 600V in LQFP-40 and SOT-223 respectively
- REF_Fridge_C101T_IM231 (above) is more integrated for a smaller footprint, combining a IMC101T-T038 digital motion IC with three-phase power module based around 6A 600V IGBTs
D111T_MOS (left) implements sensorless field-oriented control for permanent magnet synchronous motors with space vector three or two-phase PWM. Motor-current sensing via a single or leg shunt and there is an option for analogue or digital hall sensor interface. Interfaces include UART, duty-cycle or analogue. Software is safety certifiedd to IEC60335-1/UL60730 Class B.
C101T_IM231 (top) implements field-oriented control for permanent magnet sensorless or Hall sensor synchronous motor – there is support for analogue or digital Hall sensors. Space vector PWM is provided with sinusoidal commutation. Current sensing, as with D111T_MOS, is via single shunt or leg shunt. Comparators are integrated for over-current protection. Host interfaces for speed commands include UART, SPI, PWM or analogue. MCE2.0 firmware has Class B pre-certification (IEC60335)
Product pages are:
Ref Fridge C101T IM231
Ref Fridge D111T MOS