TW200729685A - Improved fly-back power supply device - Google Patents
Improved fly-back power supply deviceInfo
- Publication number
- TW200729685A TW200729685A TW095101590A TW95101590A TW200729685A TW 200729685 A TW200729685 A TW 200729685A TW 095101590 A TW095101590 A TW 095101590A TW 95101590 A TW95101590 A TW 95101590A TW 200729685 A TW200729685 A TW 200729685A
- Authority
- TW
- Taiwan
- Prior art keywords
- transformer
- state period
- current
- state
- power supply
- Prior art date
Links
Landscapes
- Dc-Dc Converters (AREA)
Abstract
An improved fly-back power supply device comprises a controller, a switching device controlled by the controller to switch between on-state period and off-state period, a first conversion circuit, and a second conversion. The first conversion circuit comprises a first transformer through which current is controlled to flow or not by the switching device and the first transformer supplies a first current at one of the on-state period and the off-state period. The second conversion circuit has a second transformer through which current is controlled to flow or not by the switching device. A primary side of the second transformer is serially connected to a primary side of the first transformer and a secondary side of the second transformer is parallel connected to a secondary side of the first transformer and is connected to an output terminal. The second transformer supplies a second current at the other one of the on-state period and the off-state period. Thus, the first and second currents are alternately supplied at the on-state and off-state periods.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW95101590A TWI275235B (en) | 2006-01-16 | 2006-01-16 | Improved fly-back power supply device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW95101590A TWI275235B (en) | 2006-01-16 | 2006-01-16 | Improved fly-back power supply device |
Publications (2)
Publication Number | Publication Date |
---|---|
TWI275235B TWI275235B (en) | 2007-03-01 |
TW200729685A true TW200729685A (en) | 2007-08-01 |
Family
ID=38624319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW95101590A TWI275235B (en) | 2006-01-16 | 2006-01-16 | Improved fly-back power supply device |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI275235B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI422840B (en) * | 2009-06-16 | 2014-01-11 | Richpower Microelectronics | Output Short Circuit Detection Method for Chi - back Power Supply |
-
2006
- 2006-01-16 TW TW95101590A patent/TWI275235B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
TWI275235B (en) | 2007-03-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |