3935

www.DataSheet4U.com Data Sheet 26301.102a 3935 Package ED, 44-Pin PLCC 3-PHASE POWER MOSFET CONTROLLER — For Automotive Applications The A3935 is designed specifically for automotive applications that require high-power motors. Each provides six high-current gate drive outputs capable of driving a wide range of n-channel power MOSFETs. A requirement of automotive systems is steady operation over a varying battery input range. The A3935 integrates a pulse-frequency modulated boost converter to create a constant supply voltage for driving the external MOSFETs. Bootstrap capacitors are utilized to provide the above battery supply voltage required for n-channel FETs. Direct control of each gate output is possible via six TTL-compatible inputs. A differential amplifier is integrated to allow accurate measurement of the current in the three-phase bridge. Package JP, 48-Pin LQFP Package LQ, 36-Pin SOIC Diagnostic outputs can be continuously monitored to protect the driver from short-to-battery, short-to-supply, bridge-open, and battery under/overvoltage conditions. Additional protection features include dead-time, VDD undervoltage, and thermal shutdown. The A3935 is supplied in a choice of three packages, a 44-lead PLCC with copper batwing tabs (suffix ED), a 48-lead low profile QFP with exposed thermal pad (suffix JP), and a 36-lead 0.8 mm pitch SOIC (suffix LQ). ABSOLUTE MAXIMUM RATINGS Load Supply Voltages, VBAT, VDRAIN, VBOOST, BOOSTD ... -0.6 V to 40 V Output Voltage Ran...