LT1160/LT1162 Half-/Full-Bridge N-Channel Power MOSFET Drivers UFEATURESDESCRIPTIO ■ Floating Top Driver Switches Up to 60V The LT®1160/LT1162 are cost effective half-/full-bridge ■ Drives Gate of Top N-Channel MOSFET N-channel power MOSFET drivers. The floating driver can above Load HV Supply drive the topside N-channel power MOSFETs operating off ■ 180ns Transition Times Driving 10,000pF a high voltage (HV) rail of up to 60V. ■ Adaptive Nonoverlapping Gate Drives Prevent The internal logic prevents the inputs from turning on the Shoot-Through power MOSFETs in a half-bridge at the same time. Its ■ Top Drive Protection at High Duty Cycles unique adaptive protection against shoot-through cur- ■ TTL/CMOS Input Levels rents eliminates all matching requirements for the two ■ Undervoltage Lockout with Hysteresis MOSFETs. This greatly eases the design of high efficiency ■ Operates at Supply Voltages from 10V to 15V motor control and switching regulator systems. ■ Separate Top and Bottom Drive Pins U During low supply or start-up conditions, the undervoltage APPLICATIO S lockout actively pulls the driver outputs low to prevent the power MOSFETs from being partially turned on. The 0.5V ■ PWM of High Current Inductive Loads hysteresis allows reliable operation even with slowly vary- ■ Half-Bridge and Full-Bridge Motor Control ing supplies. ■ Synchronous Step-Down Switching Regulators The LT1162 is a dual version of the LT1160 and is available ■ 3-Phase Brushless Motor Drive in a 24-pin PDIP or in a 24-pin SO Wide package. ■ High Current Transducer Drivers ■ Class D Power Amplifiers , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. UTYPICAL APPLICATIO 1N4148 HV = 60V MAX + 1000µF 1 14 12V SV+ BOOST 100V 10 13 10µF PV+ T GATE DR IRFZ44 25V 12 C T GATE FB BOOST 1µF 4 11 UV OUT T SOURCE LT1160 2 9 IN TOP IN BOTTOM T GATE DR B GATE DR IN TOP B GATE DR IRFZ44 PWM 0Hz TO 100kHz 3 8 L L L L IN BOTTOM B GATE FB L H L H SGND PGND H L H L 5 6 H H L L 1160 TA01 11602fb 1
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