Modulated power supply system and method with automatic transition between buck and boost modes
First Claim
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1. A modulated power supply system comprising:
- a switching converter configured to provide a switching voltage at an output terminal for supplying modulated power to a load; and
a controller configured to perform steps to;
determine if the modulated power supply system is operating in an average power tracking (APT) mode;
operate the modulated power supply system in a buck mode if the APT mode is determined to be enabled;
monitor a switching output voltage of the modulated power supply system to detect a signal indicative of a first predetermined condition corresponding to a drop below a regulated voltage level of the switching output voltage;
automatically transition from the buck mode to a boost mode if the first predetermined condition exists for a predetermined time;
monitor the switching output voltage of the modulated power supply system to detect a signal indicative of a second predetermined condition corresponding to a rise above the regulated voltage level of the switching output voltage;
automatically transition from the boost mode to the buck mode if the second predetermined condition exists for the predetermined period; and
repeat the steps until the controller determines that the APT mode is no longer enabled.
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Abstract
The present disclosure provides a modulated power supply system having a switching converter with an output terminal for supplying modulated power to a load. The modulated power supply system also includes a controller adapted to transition the switching converter between a buck mode and a boost mode in response to a detection of at least one predetermined condition associated with the output terminal.
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Citations
16 Claims
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1. A modulated power supply system comprising:
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a switching converter configured to provide a switching voltage at an output terminal for supplying modulated power to a load; and a controller configured to perform steps to; determine if the modulated power supply system is operating in an average power tracking (APT) mode; operate the modulated power supply system in a buck mode if the APT mode is determined to be enabled; monitor a switching output voltage of the modulated power supply system to detect a signal indicative of a first predetermined condition corresponding to a drop below a regulated voltage level of the switching output voltage; automatically transition from the buck mode to a boost mode if the first predetermined condition exists for a predetermined time; monitor the switching output voltage of the modulated power supply system to detect a signal indicative of a second predetermined condition corresponding to a rise above the regulated voltage level of the switching output voltage; automatically transition from the boost mode to the buck mode if the second predetermined condition exists for the predetermined period; and repeat the steps until the controller determines that the APT mode is no longer enabled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of automatically controlling a modulated power supply system via a controller comprising steps of:
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determining if the modulated power supply system is operating in an average power tracking (APT) mode; operating the modulated power supply system in a buck mode if the APT mode is determined to be enabled; monitoring a switching output voltage of the modulated power supply system to detect a signal indicative of a first predetermined condition corresponding to a drop below a regulated voltage level of the switching output voltage; automatically transitioning from the buck mode to a boost mode if the first-predetermined condition exists for a predetermined period; monitoring the switching output voltage of the modulated power supply system to detect a signal indicative of a second predetermined condition corresponding to a rise above the regulated voltage level of the switching output voltage; automatically transitioning from the boost mode to the buck mode if the second predetermined condition exists for the predetermined period; and repeating the steps until it is determined that the APT mode is no longer enabled. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification