Method and pulse-width-modulated current control circuit for driving inductive loads in motor vehicles
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United States of America Patent
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Apr 22, 2014
Grant Date -
Mar 10, 2011
app pub date -
May 11, 2007
filing date -
May 17, 2006
priority date (Note) -
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Abstract
Method in which the current is measured inside an integrated PWM control circuit using at least one A/D converter which is likewise integrated in the circuit is described. The PWM controller is provided for the purpose of driving inductive loads and is arranged, in particular, in an electronic circuit of an electronic controller for a motor vehicle braking system. Before determining the actual current of the PWM controller, which is determined using the at least one A/D converter, the current is smoothed using a low-pass filter. A circuit arrangement for carrying out the above method and its use in electronic motor vehicle control systems is also described herein.
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