Jeffrey K Braun

US Patent:

RE339415, May 26, 1992

Filed:

Mar 27, 1990

Appl. No.:

7/499845

Inventors:

Stefan Lorincz - Arlington Heights IL
Jeffrey J. Braun - Mesa AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H02H 326

US Classification:

361 87

Abstract:

A power driver including a switch (17) that connects between a power input terminal (12) and a power output terminal (13). A current sense unit (22) provides an over current sense signal if an over current condition should exist with respect to the switch (17). A reference signal unit (23) utilizes a control signal as introduced at a control signal input (11) to provide a threshold current level signal. A comparator (21) compares the latter two signals and provides an enabling signal to a second switch (19) to disable the switch (17) upon detecting an over current condition. The comparator (21) is enabled by the control signal.

US Patent:

47713577, Sep 13, 1988

Filed:

Jul 23, 1986

Appl. No.:

6/890259

Inventors:

Stefan Lorincz - Skokie IL
Jeffrey J. Braun - Chandler AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H02H 326

US Classification:

361 87

Abstract:

A power driver including a switch (17) that connects between a power input terminal (12) and a power output terminal (13). A current sense unit (22) provides an over current sense signal if an over current condition should exist with respect to the switch (17). A reference signal unit (23) utilizes a control signal as introduced at a contol signal input (11) to provide a threshold current level signal. A comparator (21) compares the latter two signals and provides an enabling signal to a second switch (19) to disable the switch (17) upon detecting an over current condition. The comparator (21) is enabled by the control signal.