Texas Instruments has used everything except the standard inductive step-down solution to make an ac-dc power supply with 10mW no-load performance, and 15mW light load drain (150nF mains series cap). “This device achieves the best balance between high efficiency and ultra-low noise while shrinking power-supply size, it claims, with some justification – although it does ...

This story continues at APEC: TI thinks laterally to make ac-dc chip with 15mW stand-by

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