Zero-current start-up circuit
US5742155A · kind A · utility
6Cited by
10References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1996 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Nov 25, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S323/901
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A zero-current start-up circuit for a reference circuit which is initially unbiased and which has internal nodes that needs to be regulated to a predetermined voltage. When the start-up circuit is enabled, a switching transistor is turned on which enables the reference circuit to generate an internal reference current which regulates an output current to a predetermined value set by the reference circuit. The output current flows through a voltage drop device and when the voltage level reaches a predetermined value, the start-up circuit is disabled eliminating the current path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.