High side high voltage switch with over current and over...

Details High side high voltage switch with over current and over... High side high voltage switch with over current and over...

2009-03-12

2011-11-22

Riley, Shawn (Department: 2838)

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

C327S538000

Reexamination Certificate

active

08063624

ABSTRACT:
A method and apparatus are described for providing a current mirror type high voltage switching circuit (60) having a reference branch (M2, M3, R1) and a tracking branch (M1, M5), where the output peak current is limited by adding an additional branch (M4, M6) to the current mirror circuit which includes an additional mirror transistor (M4) and cascode transistor (M6), and where over voltage protection is provided by including a shut-off circuit (Q1, Q2) which turns “OFF” the cascode transistors (M5-M8) whenever the output voltage (Vout) exceeds the first reference voltage (Vbat) by a predetermined amount.

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Industrial Control Design Line, A Primer on High-Side FET Load Switches, http://www.industrialcontroldesignonline.com/howto/199204060 May 3, 2007, printed Mar. 10, 2009.
M. Berkhout, Integrated Overcurrent Protection for Class D Power Stages, ESSCIRC '02, Proceedings of the 29th European Solid-State Circuits Conference, Sep. 16-18, 2003.
M. Berkhout, Integrated Overcurrent Protection System for Class-D Audio Power Amplifiers, IEEE Journal of Solid-State Circuits, vol. 40, No. 11, Nov. 2005.

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