Controlling high side devices without using level shift switches
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United States of America Patent
Stats
-
Feb 18, 2003
Grant Date -
Sep 27, 2001
app pub date -
Apr 24, 2001
filing date -
Apr 22, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Circuits for communicating between high side devices and low side controllers without using level shifting switches are provided. A low voltage controller with time coding circuitry generates an output, such as a voltage, a current, or a digital signal for controlling a high side switch. A driver is connected to the high side switch and receives the signal from the controller, decodes the signal, and generates on and off time pulses for controlling the high side switch. The communication between the controller and the driver does not require any level shifting circuitry.
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