资 源 简 介
The ADM1169 Super Sequencer® is a configurable supervisory/ sequencing device that offers a single-chip soluTIon for supply monitoring and sequencing in mulTIple supply systems. In addiTIon to these funcTIons, the ADM1169 integrates a 12-bit ADC and four 8-bit voltage output DACs. These circuits can be used to implement a closed-loop margining system that enables supply adjustment by altering either the feedback node or reference of a dc-to-dc converter using the DAC outputs.
Supply margining can be performed with a minimum of external components. The margining loop can be used for in-circuit testing of a board during production (for example, to verify board functionality at −5% of nominal supplies), or it can be used dynamically to accurately control the output voltage of a dc-to-dc converter.
For more information about the ADM1169 register map, refer to the AN-721 Application Note.