High-voltage to low-voltage interface in power converter circuit

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United States of America Patent

PATENT NO 11689097
APP PUB NO 20220360165A1
SERIAL NO

17308517

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Abstract

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A UHV-LV interface circuit that is capable of the following, among other things: 1) starting up a primary controller of a power converter circuit with a precisely controlled startup charging profile; 2) performing pulse-based line-voltage sensing with reduced power and improved sensing accuracy; and 3) discharging a capacitor, e.g., class-X2 capacitor, with a stable supply voltage for the controller. The UHV-LV interface circuit can use a single UHV device, such as a single depletion-mode transistor, e.g., field-effect transistor (FET).

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Patent Owner(s)

  • ANALOG DEVICES INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Min Fremont, US 251 2836
Gu, Wei San Jose, US 161 1820
Ke, Xugang Milpitas, US 6 7
Liu, Wen Chuen Santa Clara, US 1 0

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