INTEGRATED CIRCUIT, CURRENT SENSE CIRCUIT FOR A PULSE WIDTH MODULATION DRIVER AND METHOD THEREFOR

A current sense circuit for a PWM driver comprises: a PWM control circuit comprising: a first switching device arranged to receive a PWM signal from the PWM driver whose current is to be sensed; and a second switching device whose supply current is arranged to track the sensed current of the PWM dri...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	PECHAUD BERNARD PIERRE FRANCOIS, ALCOUFFE BENOIT, CASTERS JEROME, HAKAM TAREK
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL BASIC ELECTRONIC CIRCUITRY BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL CODE CONVERSION IN GENERAL CODING CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DECODING ELECTRICITY GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PERFORMING OPERATIONS PHYSICS PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES TESTING TRANSPORTING VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLES IN GENERAL
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A current sense circuit for a PWM driver comprises: a PWM control circuit comprising: a first switching device arranged to receive a PWM signal from the PWM driver whose current is to be sensed; and a second switching device whose supply current is arranged to track the sensed current of the PWM driver. An ADC is operably coupled to the first and second switching device. The ADC comprises: a DAC arranged to provide a current sense to the second switching device that tracks the current passing through the PWM driver; a first comparator arranged to receive and compare an output current from the DAC and an output current from the first switching device; and a first successive approximation register arranged to receive an output from the comparator and provide: a first output to the ADC; and a second output that provides a representation of the sensed current.