Permanent magnet synchronous motor (PMSM) is widely used due to its advantages such as high efficiency, small size, simple structure and fast dynamic response. For the application of garden tools, the overall scheme uses the intelligent power controller (SPC5L32A)+ switching power supply (SD4938)+ power MOS(SVG104R5NT) . The high speed holeless comparator algorithm is used for motor control, and the cost of electronic control is reduced by the Holeless scheme. At the same time, it has the advantages of fast start-up speed and strong load capacity.
SPC5L18A is a high-performance controller developed specifically for motor control and CNC power control. It uses a single cycle 52 kernel, embedded 16K byte Flash memory, 256 byte internal data memory and 1K byte external data memory. It integrates six NMOS Pre-driver, two LDOs, two high-speed operational amplifiers, four comparators, high-speed ADC and multiplication and division unit (MDU). At the same time, the built-in 16MHz high-precision oscillator, multiple general timers, UART, SPI and special timer T6L for motor control so that users can design such systems with maximum flexibility and minimum overall cost.
The main hardware topology of the landscape tool scheme is as follows, including intelligent power controller (SPC5L32A), switching power supply (SD4938), and power MOS(SVG104R5NT).