TW200642247A - Light loading control circuit for a buck-boost voltage converter - Google Patents
Light loading control circuit for a buck-boost voltage converterInfo
- Publication number
- TW200642247A TW200642247A TW094117416A TW94117416A TW200642247A TW 200642247 A TW200642247 A TW 200642247A TW 094117416 A TW094117416 A TW 094117416A TW 94117416 A TW94117416 A TW 94117416A TW 200642247 A TW200642247 A TW 200642247A
- Authority
- TW
- Taiwan
- Prior art keywords
- phase
- switching circuit
- buck
- control circuit
- loading control
- Prior art date
Links
Landscapes
- Dc-Dc Converters (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A light loading control circuit operates a switching circuit of a buck-boost voltage converter alternately in a plurality of phase cycles and a sleep period. Each phase cycle has a rising phase, a falling phase, and a maintaining phase. In the rising phase, the switching circuit is operated to increase an inductor current. In the falling phase, the switching circuit is operated to decrease the inductor current. In the maintaining phase, the switching circuit is operated to keep the inductor current approximately constant. The sleep period prevents two terminals of an inductor from being respectively coupled to two selected from a group consisting of an input voltage, an output voltage, and a ground potential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW94117416A TWI278171B (en) | 2005-05-27 | 2005-05-27 | Light loading control circuit for a buck-boost voltage converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW94117416A TWI278171B (en) | 2005-05-27 | 2005-05-27 | Light loading control circuit for a buck-boost voltage converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW200642247A true TW200642247A (en) | 2006-12-01 |
| TWI278171B TWI278171B (en) | 2007-04-01 |
Family
ID=38626126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW94117416A TWI278171B (en) | 2005-05-27 | 2005-05-27 | Light loading control circuit for a buck-boost voltage converter |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI278171B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103986326A (en) * | 2013-02-08 | 2014-08-13 | 辉达公司 | Current-parking switching regulator upstream controller |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9395738B2 (en) | 2013-01-28 | 2016-07-19 | Nvidia Corporation | Current-parking switching regulator with a split inductor |
| US9800158B2 (en) | 2013-01-30 | 2017-10-24 | Nvidia Corporation | Current-parking switching regulator downstream controller |
| US9804621B2 (en) | 2013-02-05 | 2017-10-31 | Nvidia Corporation | Current-parking switching regulator downstream controller pre-driver |
| US9389617B2 (en) | 2013-02-19 | 2016-07-12 | Nvidia Corporation | Pulsed current sensing |
| US9639102B2 (en) | 2013-02-19 | 2017-05-02 | Nvidia Corporation | Predictive current sensing |
-
2005
- 2005-05-27 TW TW94117416A patent/TWI278171B/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103986326A (en) * | 2013-02-08 | 2014-08-13 | 辉达公司 | Current-parking switching regulator upstream controller |
| CN103986326B (en) * | 2013-02-08 | 2017-07-14 | 辉达公司 | Electric current berths switch regulator upstream controller |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI278171B (en) | 2007-04-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |