Apparatus and methods for feedback sensing in multi-cell power supplies

摘要

Apparatus and methods in accordance with this invention provide a multi-cell power supply for receiving power from a source and delivering power at an output terminal to a load. The multi-cell power supply includes a first power cell coupled to the source, and a first current sensor circuit. The first power cell provides a first output current, and includes a first output terminal coupled to a reference node of the multi-cell power supply, and a second output terminal coupled to the output terminal. The first current sensor circuit includes a first current sensor and a power supply. The first current sensor is coupled to the first output terminal of the first power cell, and measures the first output current. The power supply is coupled to either the reference node or a floating ground node of the first power cell, and provides power to the first current sensor.

主权项

1. A multi-cell power supply for receiving power from a source and delivering power at an output terminal to a load, the multi-cell power supply comprising:
a first power cell coupled to the source and providing a first output current, the first power cell comprising a first output terminal coupled to a reference node of the multi-cell power supply, and a second output terminal coupled to the output terminal; and a first current sensor circuit comprising:
a first current sensor coupled to the first output terminal of the first power cell, wherein the first current sensor measures the first output current, anda power supply coupled to either the reference node or a floating ground node of the first power cell, wherein the power supply of the first current sensor circuit provides power to the first current sensor.