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Switch pairs between resistor network and high/low DC converter comparator input
US9048728B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9048728-B2 |
| Application number | US-201213647156-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 8, 2012 |
| Priority date | Oct 8, 2012 |
| Publication date | Jun 2, 2015 |
| Grant date | Jun 2, 2015 |
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Abstract
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Two hysteresis levels, a high level and a low level, may be used to set a period (and the switching frequency) of the output voltage of a DC-DC converter, as well as the output ripple of the converter. These two thresholds may be changed using pairs of switches. By controlling the sequence and the duration of the on-time of the switches, spectral spurs in the output can be controlled and the amplitude and the frequency band of interest can be reduced. Additional spur reduction may be possible by randomizing the control of the switches.
First claim
Opening claim text (preview).
Therefore, at least the following is claimed: 1. A pulse frequency modulated DC-DC converter comprising: (A) a comparator having an inverting input, a non-inverting input, and an output; (B) a reference voltage connected to the non-inverting input of the comparator; (C) a feedback high switch circuit having an input and having an output connected to the inverting input of the comparator; (D) a feedback low switch circuit having an input and having an output connected to the…
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- H02M3/1563Primary
Electricity · mapped topic
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- What does patent US9048728B2 cover?
- Two hysteresis levels, a high level and a low level, may be used to set a period (and the switching frequency) of the output voltage of a DC-DC converter, as well as the output ripple of the converter. These two thresholds may be changed using pairs of switches. By controlling the sequence and the duration of the on-time of the switches, spectral spurs in the output can be controlled and the am…
- Who is the assignee on this patent?
- Texas Instruments Inc
- What technology area does this patent fall under?
- Primary CPC classification H02M3/1563. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 02 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).