LT1160 Ver la hoja de datos (PDF) - Linear Technology
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LT1160 Datasheet PDF : 16 Pages
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LT1160/LT1162
Half-/Full-Bridge
N-Channel
Power MOSFET Drivers
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 cur-
rents 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 vary-
ing 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
14
BOOST
13
T GATE DR
12
T GATE FB
11
T SOURCE
LT1160
2
IN TOP
9
B GATE DR
3
8
IN BOTTOM B GATE FB
SGND
5
PGND
6
CBOOST
1µF
HV = 60V MAX
+
1000µF
100V
IRFZ44
IRFZ44
IN TOP IN BOTTOM T GATE DR B GATE DR
L
L
L
L
L
H
L
H
H
L
H
L
H
H
L
L
1160 TA01
11602fb
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