US 2026/0128699 A1 · PULSE WIDTH MODULATION SIGNAL GENERATOR AND METHOD

Abstract

A semiconductor device for generating PWM modulation signals, for example an optimized pulse pattern OPP is provided. An ADC 42 outputs the angle of the motor, and is connected to a coprocessor 52 for example a digital signal processor DSP. The coprocessor 52 has an observer 44 connected to the angle inputs for generating a motor angle and a look up table 48 for generating a PWM signal as a direct function of the generated motor angle A PWM signal is output to timer unit 50. A calculating unit 46 has an input connected to the coprocessor 52, the calculating unit being arranged to select a look up table based on the generated motor angle and to store the selected look up table as the look up table 48.

Claims17

Dependent claims

A semiconductor device for generating a pulse pattern, signal, comprising:

an analog to digital converter, ADC, for connection to a motor, having an output for indicating the angle of the motor,
a coprocessor having an angle input connected to the output of the ADC, an observer connected to the angle input for determining a motor angle, a coprocessor look up table for generating a pulse pattern signal as a direct function of the determined motor angle, and a pulse pattern signal output for outputting the pulse pattern signal, and
a calculating unit having an input connected to the coprocessor, the calculating unit being arranged to select a look up table from a plurality of look up tables based on the determined motor conditions e.g. like acceleration and torque and to store the selected look up table as the coprocessor look up table in the coprocessor.

Dependencies are inferred from the claim text.

Pulse width modulation signal generator and method

Life of this patent

Pulse width modulation signal generator and method

Life of this patent

Abstract

Claims17