IC wherein a chopper-type buck regulator PNP switch supplies base current to the load
US5838147A · kind A · utility
19Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 13, 1997 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | May 13, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/156
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A chopper-type regulator circuit includes an output transistor composed of a PNP-type transistor, and a control section for controlling switching of the output transistor based upon a voltage difference between a reference voltage and an output voltage. The control section is provided with a base current output terminal for supplying a base current of the output transistor to a load connected to the chopper-type regulator circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.