Digital event generator, comparator, switched mode energy converter and method

Abstract

A digital event generator includes a counter configured to provide at least one count value based on a clock signal, and a comparator configured to evaluate a first portion of a first count value to detect a near occurrence of an event, in response to a detection of a near occurrence of an event, evaluate a second portion of a second count value, and provide the event signal based on the evaluation and digital event time information. A switched mode energy converter uses said digital event generator.

Description

technical field [0001] The present disclosure relates to digital event generators, comparators, and switch mode energy converters. In particular, the present disclosure relates to methods of providing event signals based on digital event time information. Background technique [0002] In many applications it is desirable to provide event signals based on digital event time information. A digitally controlled DCDC converter is a switch mode power supply with a digital control loop. In addition to the digital compensator (controller), the digital pulse width modulator is also the core component of the control loop and is used as a digital-to-analog converter or more precisely as a digital-to-time converter, which converts the digital duty cycle information to translated into a pulse width adjusted signal. This is usually accomplished with a counter that increments / decrements in response to a digital clock signal. At the beginning of each switching cycle of the DCDC convert...

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Problems solved by technology

However, this has the disadvantage of slower response to load and line jumps, and also slower response to dynamic voltage scaling

The downside of this idea is that many of the advantages of synchronous digital designs, such as noise immunity, robustness, design automation, etc., are lost when using these asynchronous techniques

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