Tracking energy consumption using a boost-buck technique
First Claim
1. An electronic device comprising an energy tracking system, the energy tracking system comprising a boost block, at least one energy transfer block and a control circuit wherein the control circuit is configured to control switching of energy in the at least one energy transfer block in order to transfer energy from a primary voltage applied at an input of the energy tracking system into a secondary voltage at the output of the energy tracking system;
- wherein the control circuit comprises an ON-time and OFF-time generator, at least one control logic block and an accumulator wherein the at least one control logic block is coupled to receive a signal from the ON-time and OFF-time generator and to generate switching signals for the at least one energy transfer block in the form of ON-time pulses with a constant width ON-time, and wherein the accumulator is configured to collect a number of ON-time pulses for determining consumed energy based on the number of ON-time pulses per time;
wherein the boost block comprises;
a first inductor having a first terminal and a second terminal wherein the first terminal is connected to an input of the boost block;
a first switching element, the first switching element being connected to the second terminal of the first inductor, to ground and to the control circuit;
a first diode having a cathode and an anode wherein the anode is connected to the second terminal of the first inductor and the cathode is connected to an output of the boost block;
a second switching element, the second switching element being connected to the second terminal of the first inductor, to the output of the boost block and to the control circuit; and
a capacitor having a first terminal and a second terminal, the first terminal being connected to the cathode of the first diode and the second terminal of the capacitor being connected to ground;
wherein the at least one energy transfer block comprises;
a third switching element, the third switching element being connected to the control circuit, and to the input of the at least one energy transfer block;
a second inductor having a first terminal and a second terminal wherein the first terminal is connected to the third switching device and to an output of the at least one energy transfer block;
a second diode having a cathode and an anode wherein the anode is connected to ground and the cathode is connected to the first terminal of the second inductor; and
a fourth switching element, the fourth switching element being connected to the control circuit, to the cathode of the second diode and the anode of the second diode.
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Accused Products
Abstract
The invention relates to an apparatus and method for tracking energy consumption. An energy tracking system comprises at least one switching element, at least one inductor and a control block to keep the output voltage at a pre-selected level. The switching elements are configured to apply the source of energy to the inductors. The control block compares the output voltage of the energy tracking system to a reference value and controls the switching of the switched elements in order to transfer energy for the primary voltage into a secondary voltage at the output of the energy tracking system. The electronic device further comprises an ON-time and OFF-time generator and an accumulator wherein the control block is coupled to receive a signal from the ON-time and OFF-time generator and generates switching signals for the at least one switching element in the form of ON-time pulses with a constant width ON-time.
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Citations
4 Claims
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1. An electronic device comprising an energy tracking system, the energy tracking system comprising a boost block, at least one energy transfer block and a control circuit wherein the control circuit is configured to control switching of energy in the at least one energy transfer block in order to transfer energy from a primary voltage applied at an input of the energy tracking system into a secondary voltage at the output of the energy tracking system;
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wherein the control circuit comprises an ON-time and OFF-time generator, at least one control logic block and an accumulator wherein the at least one control logic block is coupled to receive a signal from the ON-time and OFF-time generator and to generate switching signals for the at least one energy transfer block in the form of ON-time pulses with a constant width ON-time, and wherein the accumulator is configured to collect a number of ON-time pulses for determining consumed energy based on the number of ON-time pulses per time; wherein the boost block comprises; a first inductor having a first terminal and a second terminal wherein the first terminal is connected to an input of the boost block; a first switching element, the first switching element being connected to the second terminal of the first inductor, to ground and to the control circuit; a first diode having a cathode and an anode wherein the anode is connected to the second terminal of the first inductor and the cathode is connected to an output of the boost block; a second switching element, the second switching element being connected to the second terminal of the first inductor, to the output of the boost block and to the control circuit; and a capacitor having a first terminal and a second terminal, the first terminal being connected to the cathode of the first diode and the second terminal of the capacitor being connected to ground; wherein the at least one energy transfer block comprises; a third switching element, the third switching element being connected to the control circuit, and to the input of the at least one energy transfer block; a second inductor having a first terminal and a second terminal wherein the first terminal is connected to the third switching device and to an output of the at least one energy transfer block; a second diode having a cathode and an anode wherein the anode is connected to ground and the cathode is connected to the first terminal of the second inductor; and a fourth switching element, the fourth switching element being connected to the control circuit, to the cathode of the second diode and the anode of the second diode. - View Dependent Claims (2, 3, 4)
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Specification