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Systems and methods for protecting a switch mode power supply
US8988903B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8988903-B2 |
| Application number | US-201213493291-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 11, 2012 |
| Priority date | Jun 11, 2012 |
| Publication date | Mar 24, 2015 |
| Grant date | Mar 24, 2015 |
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- Title
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Abstract
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The present disclosure provides systems and methods for protecting a switch mode power supply (SMPS). An SMPS may include an input power connector, an input rectifier and filter, a transformer, an output rectifier and filter, and an output power connector. A control circuit may selectively generate a switching signal for driving the transformer based on a feedback signal and a protection signal generated by a protection circuit. The protection circuit may generate the protection signal with an asymmetric duty cycle oscillating between an enable state and an inhibit state. The protection signal may inhibit the control circuit from generating the switching signal when the protection signal is in the inhibit state. A detection circuit may receive the feedback signal and selectively force the protection signal to the enable state when the feedback signal indicates that an output voltage is too high.
First claim
Opening claim text (preview).
What is claimed: 1. A switch mode power supply, comprising: a feedback circuit configured to output a feedback signal associated with an output power of the switch mode power supply; a control circuit configured to receive the feedback signal and selectively generate a switching signal for driving a transformer in the switched mode power supply based on the feedback signal and a state of a protection signal; and a protection circuit configured to constrain an average power out…
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- H02M1/32Primary
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8988903B2 cover?
- The present disclosure provides systems and methods for protecting a switch mode power supply (SMPS). An SMPS may include an input power connector, an input rectifier and filter, a transformer, an output rectifier and filter, and an output power connector. A control circuit may selectively generate a switching signal for driving the transformer based on a feedback signal and a protection signal…
- Who is the assignee on this patent?
- Rice Raymond W, Schweitzer Engineering Lab Inc
- What technology area does this patent fall under?
- Primary CPC classification H02M1/32. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 24 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).