Multi-phase buck converter with phase individual output voltage error feedback with transconductance amplifier

摘要

A system (100) that includes a regulator (101) unit is disclosed. The regulator unit (200) includes first and second phase units (201a, 201b) whose outputs are coupled to a common output node (204). Each of the phase units (201a, 201b,...) may be configured to source current to the output node in response to the assertion of a respective clock signal (208a, 208b,...) in order to generate a regulated supply voltage (204). Each phase unit (201a, 201b,...) includes a respective transconductance amplifier (301) configured to generate a respective demand current (314) dependent upon a reference voltage (207) and the regulated supply voltage (204).