Patent ID: 9515558
Filing Date: 2016-12-06
CPC Classification: H02J,H02M

Claim Text:
1. A switched-mode power supply for use as one of a set of parallel-connected switched-mode power supplies having respective outputs connected together to provide power to a load, comprising: power circuitry operative to generate output power at an output, the output power including an output voltage and an output current; monitoring circuitry operative to monitor both output current and operating temperature of the switched-mode power supply; and control circuitry operative to auto-tune the output voltage of the switched-mode power supply using two-dimensional control, the two-dimensional control employing a predetermined two-dimensional function of the output current and the operating temperature to vary a duty cycle of operation of the switched-mode power supply to achieve the auto-tuning of the output voltage, the two-dimensional function being a sharing function whose use in each of the set of parallel-connected switched-mode power supplies effects a coordinated sharing of the load current and operating temperature across the set of parallel-connected switched-mode power supplies, wherein the predetermined two-dimensional function is decomposable into respective one-dimensional functions for output voltage versus load current and output voltage versus operating temperature, the one-dimensional functions including respective unequal weights for the sharing of load current and the sharing of operating temperature as reflected in unequal values for a first variation of the output voltage across a full operating range of load current and a second variation of the output voltage across a full operating range of operating temperature.