Brushed and Brushless DC Motor

Brushless dc motors are popular as their current-to-torque and voltage-to-speed relationships are linear. Brushless dc motors have the advantage of electronic commutation and do not require brush maintenance typical of mechanically commutated motors. The MCU generates gate drive signals and the on-chip analog-to-digital converter is used to measure feedback from voltage, current and position sensors.


Solutions for Brushed and Brushless DC Motors


Silicon Labs Solutions   Customer Benefits

Precision Processing: Mixed-signal system-on-a-chip MCU, on-board oscillator (± 0.5%) with clock multiplier, integrated flash, 12-bit analog, CAN 2.0B interface, 125° C operation; AEC-Q100 qualified

High reliability, few external components, wide temperature range and voltage operating range; up to 50 MIPS

Reliable, Safe and Effective Isolation: Isolated gate drivers in 0.5 A and 4.0 A peak output current ratings. 2.5 and 5.0 kV rms isolation; AEC-Q100 qualified

Minimum space, single package gate driver solution; programmable dead time, latch-free level shifting DC working voltages up to 1 kV, 60 nS propagation time; more reliable than HVIC drivers

2.5 and 5.0 kV rms isolators with 10x higher reliability than optocouplers; data rates from dc to 150 Mbps; AEC-Q100 qualified

Safety certified, single package digital isolator (1-6 ch/pkg) smaller, faster, more reliable and lower power than optocouplers

Sensors: High frequency (50 kHz to 1 MHz) tiny CMOS replacement for current sense transformer; AEC-Q100 qualified

Single package CMOS ac current sensor with 2 V full-scale output, signal conditioning and 5% of measurement accuracy, 4 mm x 4 mm x 1 mm package

 
ISOdriver Challenge