Introduction to Digital Power Conversion
XMC4000/1000 Family
Modulation
Application Guide 54 V1.0, 2015-01
Steady State Frequency Response in Voltage Control
The transfer function frequency response will be stabilized by the H(z) transfer compensating
software; using DSP operations on discrete time variables, maintained by the Interrupt Service
Request (ISR) provider, stimulated by the VADC result stream, due to the conversion trigger from the
PWM cycles.
The conversion rate for the ‘n’ sampling cycles determines the time constant of the feed-back control;
i.e. VC might be very slow, but it meets the highest requirements for accuracy.
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