Patent US5808884A successfully refreshed from Google Patents.
US5808884A
Expired / Lapsed
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Circuit and method for conserving energy in a boost regulator circuit
Assignee: Texas Instruments Inc
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Filing: 1996-07-16
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Granted: 1998-09-15
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Expires: 2016-07-16
Abstract
Abstract A boost regulator circuit includes a rechargeable power supply Vcc, an energy storage component 22 coupled to the rechargeable power supply, a load C L , and a bi-directional drive means (S1-S6, 20 and 27) for delivering energy from the energy storage component 22 to the load C L . The bi-directional drive means allows energy transferred to the load to be recovered back to the rechargeable power supply Vcc before switching the load C L in an opposite direction, thereby effectuating an efficient management of energy and extending the life of the rechargeable power supply Vcc.
Inventors
- 👤 Ross E. Teggatz
- 👤 Rex M. Teggatz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:12
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/145; H02M3/155; H02M3/156; H02M3/158; H02M3/1588; H05; H05B; H05B44/00; Y; Y02; Y02B; Y02B70/00; Y02B70/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
169 words
A boost regulator circuit, comprising: an H-bridge circuit; a load connected to the H-bridge circuit capable of being driven bi-directionally; a diode having an anode and a cathode, wherein the cathode is connected to the H-bridge circuit; a first electrical switch connected in parallel with the diode; an inductive element connected between the anode of the diode and a power supply node; a second electrical switch connected between the anode of the diode and a circuit ground potential, the second electrical switch is activated by a pulse signal a control circuit connected to the first and second electrical switches and the H-bridge circuit, wherein the control circuit first activates the second electrical switch and controls the H-bridge circuit to drive the load in a first polarity, and then deactivates the second electrical switch, and activates the first electrical switch before switching the H-bridge circuit to drive the load in an opposite polarity thereby transferring energy stored in the load through the first electrical switch to the power supply node.
Claim 2
Dependent Claim
169 words
A boost regulator circuit, comprising: an H-bridge circuit; a load connected to the H-bridge circuit capable of being driven bi-directionally; a diode having an anode and a cathode, wherein the cathode is connected to the H-bridge circuit; a first electrical switch connected in parallel with the diode; an inductive element connected between the anode of the diode and a power supply node; a second electrical switch connected between the anode of the diode and a circuit ground potential, the second electrical switch is activated by a pulse signal a control circuit connected to the first and second electrical switches and the H-bridge circuit, wherein the control circuit first activates the second electrical switch and controls the H-bridge circuit to drive the load in a first polarity, and then deactivates the second electrical switch, and activates the first electrical switch before switching the H-bridge circuit to drive the load in an opposite polarity thereby transferring energy stored in the load through the first electrical switch to the power supply node.
Claim 3
Independent Claim
75 words
A method of conserving energy in a boost regulator circuit, comprising the steps of: driving a load in a first polarity, thereby causing a voltage potential to develop across the load and energy to be stored within the load; enabling a discharge path between the load and a power supply node; transferring the energy stored in the load to the power supply node; disabling the discharge path; and driving the load in a second polarity.
Claim 4
Independent Claim
75 words
A method of conserving energy in a boost regulator circuit, comprising the steps of: driving a load in a first polarity, thereby causing a voltage potential to develop across the load and energy to be stored within the load; enabling a discharge path between the load and a power supply node; transferring the energy stored in the load to the power supply node; disabling the discharge path; and driving the load in a second polarity.
Claim 5
Dependent Claim
71 words
The method of claim 2, wherein the step of enabling a discharge path between the load and a power supply node comprises activating a switch between the load and the power supply node creating an effective short circuit between the load and the power supply node, thereby allowing energy stored in the load to easily transfer to the power supply node, minimizing the resulting power drain on the power supply node.
Claim 6
Independent Claim
86 words
A method of conserving energy in a boost regulator circuit, comprising the steps of: incrementally driving a load in a first polarity, thereby causing a voltage potential to be incrementally boosted across the load until the voltage potential reaches a predetermined level; enabling a discharge path between the load and a power supply node after the voltage potential reaches a predetermined level; transferring the energy stored in the load to the power supply node; disabling the discharge path; and driving the load in a second polarity.
Claim 7
Independent Claim
86 words
A method of conserving energy in a boost regulator circuit, comprising the steps of: incrementally driving a load in a first polarity, thereby causing a voltage potential to be incrementally boosted across the load until the voltage potential reaches a predetermined level; enabling a discharge path between the load and a power supply node after the voltage potential reaches a predetermined level; transferring the energy stored in the load to the power supply node; disabling the discharge path; and driving the load in a second polarity.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-09-14 | 2002-03-16 | 2002-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-09-14 | 2006-03-16 | 2006-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-09-14 | 2010-03-16 | 2010-09-15 | $7700.00 | Window Closed / Lapsed |