DRIVING SWITCHING SYSTEM APPLIED TO MOTORS
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United States of America Patent
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Issued Date -
Jan 1, 2015
app pub date -
Sep 11, 2013
filing date -
Jun 28, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A driving switching system includes an H-bridge circuit, at least a kickback voltage detection module and at least a driving module. The H-bridge circuit includes a first P-type MOSFET, a first N-type MOSFET, a second P-type MOSFET and a second N-type MOSFET. The first N-type MOSFET connects the first P-type MOSFET to have a first connection terminal, and the second N-type MOSFET connects the second P-type MOSFET to have a second connection terminal, in which both the terminals are connected to a coil. The kickback voltage detection module is used to detect a first kickback voltage at the first connection terminal and a second kickback voltage at the second connection terminal. The driving module switches the P-type MOSFET and the N-type MOSFET so as to drive a motor as the first or the second kickback voltage reaches a first or a second threshold.
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