Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode
Reexamination Certificate
2006-10-03
2006-10-03
Chambliss, Alonzo (Department: 2814)
Active solid-state devices (e.g., transistors, solid-state diode
Field effect device
Having insulated electrode
C257S341000, C257S356000, C257S401000
Reexamination Certificate
active
07115922
ABSTRACT:
A fully protected H-bridge for a d-c motor consists of two high side MOSFETs and a control and logic IC on a first conductive heat sink all within a first package and two discrete low side MOSFETs. The entire bridge is controlled by the IC. Shoot thru protection is provided for each leg, and a PMW soft start sequence is provided through the control of the low side MOSFETs, programed by an external, chargeable RC circuit. Input signals to the high side MOSFETs select the operation modes. Protective circuits are provided for short circuit current and over current conditions. Sleep mode and braking
on braking control is also provided.
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de Frutos Xavier
Lee Chik Yam
Nadd Bruno C
Thiery Vincent
Chambliss Alonzo
International Rectifier Corporation
Ostrolenk Faber Gerb & Soffen, LLP
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