Override mechanism for PWM operation
AssigneeMicrochip Technology Incorporated
InventorsYong Yuenyongsgool, Andreas Reiter, Stephen Bowling, Jason Sachs
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Abstract
An apparatus includes a pulsed-width modulation (PWM) generator circuit to generate generally complementary PWM signals. The signals are to prevent two complementary switches that receive the complementary PWM signals from both being activated at a same time. The PWM signals are generally complementary with respect to their active portions. The apparatus includes an override circuit to override at least one of the complementary PWM signals to yield adjusted PWM signals. The adjusted PWM signals are to cause the two complementary switches to be activated at a same time when the adjusted PWM signals are received at the two complementary switches.
Claims20
An apparatus, comprising:
- a pulsed-width modulation (PWM) generator circuit to generate generally complementary PWM signals, the signals to prevent two complementary switches that receive the complementary PWM signals from both being activated at a same time, the PWM signals being generally complementary with respect to their active portions;
- and
- an override circuit to override at least one of the complementary PWM signals to yield adjusted PWM signals, the adjusted PWM signals to cause the two complementary switches to be activated at a same time when the adjusted PWM signals are received at the two complementary switches.
A method, comprising:
- generating generally complementary pulsed-width modulation (PWM) signals, the PWM signals being generally complementary with respect to their active portions, the complementary PWM signals to prevent two complementary switches that receive the complementary PWM signals from both being activated at a same time;
- and
- overriding at least one of the complementary PWM signals to yield adjusted PWM signals, the second adjusted PWM signals to cause the two complementary switches to be activated at a same time when the second adjusted PWM signals are received.
A system, comprising:
- a pulsed-width modulation (PWM) generator circuit to generate a first PWM signal and a second PWM signal, the first and second PWM signals to be generally complementary to each other with respect to their active portions;
- an output circuit to output a first output PWM signal and a second output PWM signal;
- and
- an override circuit to select between a first override value or a first adjusted PWM signal to provide to the output circuit;
- wherein the output circuit is to output the first output PWM signal based upon the first adjusted PWM signal based upon a selected one of the first override value or the first adjusted PWM signal from the override circuit.
Dependencies are inferred from the claim text.