Low dropout regulator testing system and device
US8054057B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2008 |
| Grant date | Nov 8, 2011 |
| Priority date | — |
| Expiry date | Jun 13, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for testing low dropout (LDO) regulator is disclosed. In one embodiment, a device for testing LDO regulators includes an absolute value measurement module for measuring absolute output voltages of the LDO regulators including a resistor scaling array for generating candidate voltages based on a first output voltage of the LDO regulators, a multiplexer for forwarding one of the candidate voltages selected by a binary search algorithm, and a comparator for generating a first test output by comparing the candidate voltage with an external reference voltage, and a DC load regulation measurement module for measuring corresponding DC regulation voltages of the LDO regulators including a switch for applying an internal test load to a second output voltage of the LDO regulators, and the comparator for generating a second test output by comparing a reference voltage with the second output voltage modified by the internal test load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.