TW200801541A - Method and related controller capable of sensing heavy load and short circuit of low dropout regulators - Google Patents
Method and related controller capable of sensing heavy load and short circuit of low dropout regulatorsInfo
- Publication number
- TW200801541A TW200801541A TW95133804A TW95133804A TW200801541A TW 200801541 A TW200801541 A TW 200801541A TW 95133804 A TW95133804 A TW 95133804A TW 95133804 A TW95133804 A TW 95133804A TW 200801541 A TW200801541 A TW 200801541A
- Authority
- TW
- Taiwan
- Prior art keywords
- low dropout
- heavy load
- short circuit
- square waveform
- dropout regulator
- Prior art date
Links
Landscapes
- Continuous-Control Power Sources That Use Transistors (AREA)
- Dc-Dc Converters (AREA)
Abstract
A method capable of sensing heavy load and short circuit of a low dropout regulator includes providing a ramp pulse signal to the low dropout regulator, providing a square waveform, comparing a feedback signal of the low dropout regulator with the square waveform, and determining the low dropout regulator as heavy load or short circuit if a period during the feedback signal is greater than a low voltage level of the square waveform and lower than a high voltage level of the square waveform is not greater than a pulse width of the square waveform; otherwise determining the low dropout regulator as light load. The method further includes determining the low dropout regulator as light load if a period during the feedback signal is greater than the high voltage level of the square waveform is greater than a designated time; otherwise determining the low dropoutregulator as heavy load.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US80456106P | 2006-06-12 | 2006-06-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW200801541A true TW200801541A (en) | 2008-01-01 |
| TWI304888B TWI304888B (en) | 2009-01-01 |
Family
ID=44765114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW95133804A TWI304888B (en) | 2006-06-12 | 2006-09-13 | Method and related controller capable of sensing heavy load and short circuit of low dropout regulators |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI304888B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI398747B (en) * | 2010-07-16 | 2013-06-11 | Richpower Microelectronics | Power stage control circuit |
| TWI460972B (en) * | 2011-06-30 | 2014-11-11 | Monolithic Power Systems Inc | Switching mode power supply, and the no-load controlling circuit and no-load detecting circuit thereof |
| CN112649719A (en) * | 2020-11-30 | 2021-04-13 | 成都海光集成电路设计有限公司 | Method, device and equipment for testing linear voltage stabilizer in chip |
| TWI728805B (en) * | 2020-05-11 | 2021-05-21 | 台達電子工業股份有限公司 | Method of checking power unit |
-
2006
- 2006-09-13 TW TW95133804A patent/TWI304888B/en not_active IP Right Cessation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI398747B (en) * | 2010-07-16 | 2013-06-11 | Richpower Microelectronics | Power stage control circuit |
| TWI460972B (en) * | 2011-06-30 | 2014-11-11 | Monolithic Power Systems Inc | Switching mode power supply, and the no-load controlling circuit and no-load detecting circuit thereof |
| TWI728805B (en) * | 2020-05-11 | 2021-05-21 | 台達電子工業股份有限公司 | Method of checking power unit |
| CN112649719A (en) * | 2020-11-30 | 2021-04-13 | 成都海光集成电路设计有限公司 | Method, device and equipment for testing linear voltage stabilizer in chip |
| CN112649719B (en) * | 2020-11-30 | 2023-11-24 | 成都海光集成电路设计有限公司 | Testing method, device and equipment for linear voltage stabilizer in chip |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI304888B (en) | 2009-01-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |