Control of pulse generator in driving control device

A method of controlling a power converter, the method comprising:

• generating a first pulse signal and a second pulse signal in response to an input signal, the first pulse signal being asserted at least a given time interval after the input signal has been de-asserted, the first pulse signal being a single pulse signal in each cycle of the input signal;
• shifting a level of the first pulse signal to generate a first shifted signal and shifting a level of the second pulse signal to generate a second shifted signal;
• controlling a first-side switching device in response to the first shifted signal and the second shifted signal;
• and
• outputting an output signal at an output node,
• wherein the first-side switching device and a second-side switching device are coupled to each other at the output node, and the given time interval includes a first time interval when the output signal has a negative value, the given time interval being sufficiently long to avoid an overlap between the first time interval and an on-time duration of the first pulse signal.

A power converter comprising:

• a first-side switching device;
• a second-side switching device coupled to the first-side switching device at an output node, the output node outputting an output signal;
• a controller configured to generate first and second input signals;
• and
• a driving control device configured to generate a first control signal in response to the first input signal to control the first-side switching device and a second control signal in response to the second input signal to control the second-side switching device,
• wherein the driving control device includes a pulse generator configured to generate a first pulse signal and a second pulse signal in response to the first input signal, the first pulse signal being asserted at least a given time interval after the first input signal has been de-asserted, the given time interval including a first time interval when the output signal has a negative value, the given time interval being sufficiently long to avoid an overlap between the first time interval and an on-time duration of the first pulse signal, the first pulse signal being a single pulse signal in each cycle of the input signal.