Switching power source, method and control chip for controlling the same
US-2015381058-A1 · Dec 31, 2015 · US
Relaxation oscillator
US9099994B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9099994-B2 |
| Application number | US-201213721885-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 20, 2012 |
| Priority date | Dec 20, 2012 |
| Publication date | Aug 4, 2015 |
| Grant date | Aug 4, 2015 |
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Abstract
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In an embodiment, a method includes: during a first portion of a cycle of a clock signal generated by an oscillator, pre-charging a first capacitor of a first switched capacitor stage until a first comparator determines that a first node voltage of the first switched capacitor stage is greater than a first reference voltage at a first reference voltage node; applying a second reference voltage to the first reference voltage node; and responsive to a first edge of the clock signal, charging the first capacitor until the first comparator determines that the first node voltage is greater than the second reference voltage at the first reference voltage node.
First claim
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What is claimed is: 1. An apparatus comprising: a first capacitor to pre-charge to a first voltage exceeding a first reference voltage by a first delay compensation voltage during a first portion of a clock period and thereafter to charge to a second voltage exceeding a second reference voltage by a second delay compensation voltage during a second portion of the clock period; a second capacitor to charge to the second voltage during the first portion of the clock period and to…
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- H03K3/0231Primary
Electricity · mapped topic
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- What does patent US9099994B2 cover?
- In an embodiment, a method includes: during a first portion of a cycle of a clock signal generated by an oscillator, pre-charging a first capacitor of a first switched capacitor stage until a first comparator determines that a first node voltage of the first switched capacitor stage is greater than a first reference voltage at a first reference voltage node; applying a second reference voltage …
- Who is the assignee on this patent?
- Thomsen Axel, Konecny Pavel, Wang Xiaodong, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H03K3/0231. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 04 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).