Title:
SIGNAL ISOLATORS USING MICRO-TRANSFORMERS
Document Type and Number:
WIPO Patent Application WO2004100473
Kind Code:
A9
Abstract:
A logic signal isolator comprising a transformer having a primary winding and a secondary winding; a transmitter circuit which drives said primary winding in response to a received logic signal, such that in response to a first type of edge in the logic signal, a signal of a first predetermined type is supplied to the primary winding and in response to a second type of edge in the logic signal, a signal of a second predetermined type is supplied to said primary winding, the primary winding and the transmitter being referenced to a first ground; and the secondary winding being referenced to a second ground which is galvanically isolated from the first ground and said secondary winding supplying to a receiver circuit signals received in correspondence to the signals provided to the primary winding, the receiver reconstructing the received logic signal from the received signals.
Inventors:
CHEN BAOXING (US)
HAIGH GEOFFREY (US)
HAIGH GEOFFREY (US)
Application Number:
PCT/US2004/013806
Publication Date:
January 06, 2005
Filing Date:
April 29, 2004
Export Citation:
Assignee:
ANALOG DEVICES INC (US)
CHEN BAOXING (US)
HAIGH GEOFFREY (US)
CHEN BAOXING (US)
HAIGH GEOFFREY (US)
International Classes:
H01F17/00; H01F19/08; H03K5/1252; H01L23/522; (IPC1-7): H04L25/02; H01L23/522; H01L23/525; H03K5/08; H03K5/13; H03K3/011; H03K19/0175; H01F19/08
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