Acceleration of output energy provision for a load during start-up of a switching power converter
First Claim
1. A method comprising:
- detecting a start-up condition of a load, wherein (i) detecting a start-up condition comprises detecting a load voltage below a predetermined voltage threshold level and (ii) a start-up condition includes when the load voltage is below the predetermined voltage threshold level during a normal operation of a switching power converter;
upon detecting the start-up condition;
causing the switching power converter to provide an amount of charge to the load at a rate in accordance with a start-up mode until reaching an energy-indicating threshold;
determining if the energy-indicating threshold has been reached; and
when the energy-indicating threshold has been reached, causing the switching power converter to (i) decrease the amount of charge provided to the load relative to the charge provided to the load during the start-up mode and (ii) operate in a distinct post-start-up-mode.
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Accused Products
Abstract
An electronic system and method include a controller to operate in a start-up mode to accelerate driving a load to an operating voltage and then operates in a post-start-up mode. A start-up condition occurs when the controller detects that a load voltage is below a predetermined voltage threshold level. The predetermined voltage threshold level is set so that the controller will boost the voltage to an operating value of a load voltage at a faster rate than during normal, steady-state operation. The controller causes a switching power converter to provide charge to the load at a rate in accordance with a start-up mode until reaching an energy-indicating threshold. When the energy-indicating threshold has been reached, the controller causes the switching power converter to (i) decrease the amount of charge provided to the load relative to the charge provided during the start-up mode and (ii) operate in a distinct post-start-up-mode.
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Citations
24 Claims
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1. A method comprising:
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detecting a start-up condition of a load, wherein (i) detecting a start-up condition comprises detecting a load voltage below a predetermined voltage threshold level and (ii) a start-up condition includes when the load voltage is below the predetermined voltage threshold level during a normal operation of a switching power converter; upon detecting the start-up condition; causing the switching power converter to provide an amount of charge to the load at a rate in accordance with a start-up mode until reaching an energy-indicating threshold; determining if the energy-indicating threshold has been reached; and when the energy-indicating threshold has been reached, causing the switching power converter to (i) decrease the amount of charge provided to the load relative to the charge provided to the load during the start-up mode and (ii) operate in a distinct post-start-up-mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus comprising:
a controller, wherein the controller is configured to; detect a start-up condition of a load, wherein (i) to detect a start-up condition comprises to detect a load voltage below a predetermined voltage threshold level and (ii) a start-up condition includes when the load voltage is below the predetermined voltage threshold level during a normal operation of a switching power converter; upon detection of the start-up condition; cause the switching power converter to provide an amount of charge to the load at a rate in accordance with a start-up mode until reaching an energy-indicating threshold; determine if the energy-indicating threshold has been reached; and when the energy-indicating threshold has been reached, cause the switching power converter to (i) decrease the amount of charge provided to the load relative to the charge provided during the start-up mode and (ii) operate in a distinct post-start-up-mode. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An apparatus comprising:
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a switching power converter; a load coupled to the switching power converter; and a controller, coupled to the switching power converter;
wherein the controller is configured to;detect a start-up condition of the load, wherein (i) to detect a start-up condition comprises to detect a load voltage below a predetermined voltage threshold level and (ii) a start-up condition includes when the load voltage is below the predetermined voltage threshold level during a normal operation of the switching power converter; upon detection of the start-up condition; cause the switching power converter to provide an amount of charge to the load at a rate in accordance with a start-up mode until reaching an energy-indicating threshold; determine if the energy-indicating threshold has been reached; and when the energy-indicating threshold has been reached, cause the switching power converter to (i) decrease the amount of charge provided to the load relative to the charge provided during the start-up mode and (ii) operate in a distinct post-start-up-mode. - View Dependent Claims (23, 24)
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Specification