Method for operating an H-bridge drive utilizing a pair of...

Details Method for operating an H-bridge drive utilizing a pair of... Method for operating an H-bridge drive utilizing a pair of...

2006-08-14

2008-12-16

Chambliss, Alonzo (Department: 2892)

Semiconductor device manufacturing: process

Making field effect device having pair of active regions...

C438S197000, C438S284000, C257S288000, C257S341000, C257S356000

Reexamination Certificate

active

07465610

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.

REFERENCES:
patent: 5408150 (1995-04-01), Wilcox
patent: 6369559 (2002-04-01), Ashrafzadeh
patent: 6747300 (2004-06-01), Nadd et al.
patent: 7115922 (2006-10-01), Nadd et al.

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