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LT1162

Linear Technology
Part Number LT1162
Manufacturer Linear Technology
Description Half-/Full-Bridge N-Channel Power MOSFET
Published Mar 22, 2005
Detailed Description LT1160/LT1162 Half-/Full-Bridge N-Channel Power MOSFET Drivers U U FEATURES ■ Floating Top Driver Switches Up to 60V ■...
Datasheet PDF File LT1162 PDF File

LT1162
LT1162

Overview
LT1160/LT1162 Half-/Full-Bridge N-Channel Power MOSFET Drivers U U FEATURES ■ Floating Top Driver Switches Up to 60V ■ Drives Gate of Top N-Channel MOSFET above Load HV Supply ■ 180ns Transition Times Driving 10,000pF ■ Adaptive Nonoverlapping Gate Drives Prevent Shoot-Through ■ Top Drive Protection at High Duty Cycles ■ TTL/CMOS Input Levels ■ Undervoltage Lockout with Hysteresis ■ Operates at Supply Voltages from 10V to 15V ■ Separate Top and Bottom Drive Pins U APPLICATIO S ■ PWM of High Current Inductive Loads ■ Half-Bridge and Full-Bridge Motor Control ■ Synchronous Step-Down Switching Regulators ■ 3-Phase Brushless Motor Drive ■ High Current Transducer Drivers ■ Class D Power Amplifiers DESCRIPTIO The LT®1160/LT1162 are cost effective half-/full-bridge N-channel power MOSFET drivers.
The floating driver can drive the topside N-channel power MOSFETs operating off a high voltage (HV) rail of up to 60V.
The internal logic prevents the inputs from turning on the power MOSFETs in a half-bridge at the same time.
Its unique adaptive protection against shoot-through currents eliminates all matching requirements for the two MOSFETs.
This greatly eases the design of high efficiency motor control and switching regulator systems.
During low supply or start-up conditions, the undervoltage lockout actively pulls the driver outputs low to prevent the power MOSFETs from being partially turned on.
The 0.
5V hysteresis allows reliable operation even with slowly varying supplies.
The LT1162 is a dual version of the LT1160 and is available in a 24-pin PDIP or in a 24-pin SO Wide package.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO 12V 10µF 25V PWM 0Hz TO 100kHz 1N4148 1 SV+ 10 PV+ 4 UV OUT BOOST T GATE DR T GATE FB T SOURCE 14 13 12 11 LT1160 2 IN TOP 9 B GATE DR 38 IN BOTTOM B GATE FB SGND 5 PGND 6 CBOOST 1µF HV = 60V MAX + 1000µF 100V IRFZ44 ...


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