LT1336 Half-Bridge N-Channel Power MOSFET Driver with Boost Regulator FeaTuresDescripTion n Floating Top Driver Switches Up to 60V The LT®1336 is a cost effective half-bridge N-channel n Internal Boost Regulator for DC Operation power MOSFET driver. The floating driver can drive the n 180ns Transition Times Driving 10,000pF topside N-channel power MOSFETs operating off a high n Adaptive Nonoverlapping Gate Drives Prevent voltage (HV) rail of up to 60V (absolute maximum). In Shoot-Through PWM operation an on-chip switching regulator maintains n Drives Gate of Top N-Channel MOSFET charge in the bootstrap capacitor even when approaching Above Supply and operating at 100% duty cycle. n Top Drive Maintained at High Duty Cycles The internal logic prevents the inputs from turning on n TTL/CMOS Input Levels the power MOSFETs in a half-bridge at the same time. Its n Undervoltage Lockout with Hysteresis unique adaptive protection against shoot-through cur- n Operates at Supply Voltages from 10V to 15V rents eliminates all matching requirements for the two n Separate Top and Bottom Drive Pins MOSFETs. This greatly eases the design of high efficiency motor control and switching regulator systems. applicaTions During low supply or start-up conditions, the undervoltage n PWM of High Current Inductive Loads lockout actively pulls the driver outputs low to prevent n Half-Bridge and Full-Bridge Motor Control the power MOSFETs from being partially turned on. The n Synchronous Step-Down Switching Regulators 0.5V hysteresis allows reliable operation even with slowly n 3-Phase Brushless Motor Drive varying supplies. n High Current Transducer Drivers L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n Technology Corporation. All other trademarks are the property of their respective owners. Class D Power Amplifiers Typical applicaTion 12V 1N4148 200µH* 1 RSENSE 16 2Ω ISENSE SWITCH 1N4148 1/4W 2 14 HV = 40V MAX** SV+ BOOST + 1000µF + 10 13 PV+ TGATEDR IRFZ44 10µF 100V LT1336 12 + 25V TGATEFB CBOOST 1µF INTOP INBOTTOM TGATEDR BGATEDR 5 11 UVOUT TSOURCE L L L L 3 9 INTOP BGATEDR IRFZ44 L H L H 4 8 H L H L INBOTTOM BGATEFB H H L L PWM SGND SWGND PGND 0Hz TO 100kHz * SUMIDA RCR-664D-221KC 6 15 7 ** FOR HV > 40V SEE “DERIVING THE FLOATING SUPPLY WITH THE FLYBACK TOPOLOGY” IN APPLICATIONS INFORMATION SECTION 1336 TA01 1336fa 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Test Circuit Timing Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
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