US5406468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for minimizing output transient responses in a power supply
Assignee: M0TOROLA Inc
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Filing: 1993-09-02
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Granted: 1995-04-11
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Expires: 2013-09-02
Abstract
Abstract In a power supply that includes switch-mode feedback, output transient responses can be minimized by first detecting a predetermined load change. Once the load change has been detected, the switch-mode feedback is adjusted for a predetermined period of time to a maximum level for load increases or to a minimum level for load decreases. When the predetermined period of time elapses, the switch-mode feedback is adjusted to an output voltage dependent mode of operation.
Inventors
- 👤 James R. Booth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:03
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/33507
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
98 words
In a power supply that includes switch-mode feedback, a method for minimizing transient responses at an output node, the method comprises the steps of: a) sensing an actual load increase at the output node to produce a sensed load increase; b) when the sensed load increase exceeds a predetermined value, for a predetermined period of time, adjusting the switch-mode feedback to a maximum level, wherein the predetermined period of time is based on the predetermined load increase; and c) when the predetermined period of time expires, adjusting the switch-mode feedback to an output voltage dependent mode of operation.
Claim 2
Dependent Claim
98 words
In a power supply that includes switch-mode feedback, a method for minimizing transient responses at an output node, the method comprises the steps of: a) sensing an actual load increase at the output node to produce a sensed load increase; b) when the sensed load increase exceeds a predetermined value, for a predetermined period of time, adjusting the switch-mode feedback to a maximum level, wherein the predetermined period of time is based on the predetermined load increase; and c) when the predetermined period of time expires, adjusting the switch-mode feedback to an output voltage dependent mode of operation.
Claim 3
Dependent Claim
25 words
In the method of claim 1, the sensing of the actual load increase of step (a) further comprises sensing load current of the output load.
Claim 4
Dependent Claim
25 words
In the method of claim 1, the sensing of the actual load increase of step (a) further comprises sensing output voltage of the output load.
Claim 5
Dependent Claim
29 words
In the method of claim 1, the adjustment of the switch-mode feedback of step (b) further comprises providing maximum input to a pulse width modulator of the switch-mode feedback.
Claim 6
Dependent Claim
98 words
In a power supply that includes switch-mode feedback, a method for minimizing transient responses at an output node, the method comprises the steps of: a) sensing an actual load decrease at the output node to produce a sensed load decrease; b) when the sensed load decrease exceeds a predetermined value, for a predetermined period of time, adjusting the switch-mode feedback to a minimum level, wherein the predetermined period of time is based on the predetermined load decrease; and c) when the predetermined period of time expires, adjusting the switch-mode feedback to an output voltage dependent mode of operation.
Claim 7
Dependent Claim
98 words
In a power supply that includes switch-mode feedback, a method for minimizing transient responses at an output node, the method comprises the steps of: a) sensing an actual load decrease at the output node to produce a sensed load decrease; b) when the sensed load decrease exceeds a predetermined value, for a predetermined period of time, adjusting the switch-mode feedback to a minimum level, wherein the predetermined period of time is based on the predetermined load decrease; and c) when the predetermined period of time expires, adjusting the switch-mode feedback to an output voltage dependent mode of operation.
Claim 8
Dependent Claim
25 words
In the method of claim 5, the sensing of the actual load decrease of step (a) further comprises sensing load current of the output load.
Claim 9
Dependent Claim
25 words
In the method of claim 5, the sensing of the actual load decrease of step (a) further comprises sensing output voltage of the output load.
Claim 10
Dependent Claim
29 words
In the method of claim 5, the adjustment of the switch-mode feedback of step (b) further comprises providing minimum input to a pulse width modulator of the switch-mode feedback.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-04-10 | 1998-10-10 | 1999-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-10 | 2002-10-10 | 2003-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-10 | 2006-10-10 | 2007-04-11 | $7700.00 | Window Closed / Lapsed |