LT1160/LT1162
Half-/Full-Bridge
N-Channel
Power MOSFET Drivers
FEATURES
DESCRIPTIO
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
During low supply or start-up conditions, the undervoltage
U
lockout actively pulls the driver outputs low to prevent the
APPLICATIO S
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
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Class D Power Amplifiers
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
1N4148
HV = 60V MAX
+
1000F
1 14
+
100V
12V SV BOOST
10 13
10F +
IRFZ44
PV T GATE DR
25V
12
C
BOOST
T GATE FB
1F
4 11
UV OUT T SOURCE
LT1160
2 9
IN TOP IN BOTTOM T GATE DR B GATE DR
IRFZ44
IN TOP B GATE DR
PWM
3 8
LL L L
0Hz TO 100kHz
IN BOTTOM B GATE FB
LH L H
SGND PGND
HL H L
56
HH L L
1160 TA01
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U
ULT1160/LT1162
ABSOLUTE MAXIMUM RATINGS (Note 1)
Supply Voltage (Note 2) ......................................... 20V
Operating Temperature Range
Boost Voltage ......................................................... 75V
Commercial .......................................... 0C to 70C
Peak Output Currents (< 10s) .............................. 1.5A
Industrial ......................................... 40C to 85C
+
Input Pin Voltages .......................... 0.3V to V + 0.3V
Junction Temperature (Note 3)............................ 125C
Top Source Voltage ..................................... 5V to 60V
Storage Temperature Range ................ 65C to 150C
Boost to Source Voltage ........................... 0.3V to 20V
Lead Temperature (Soldering, 10 sec)................. 300C
PACKAGE/ORDER INFORMATION
TOP VIEW
ORDER PART ORDER PART
TOP VIEW
+
NUMBER NUMBER
SV A 1 24 BOOST A
+
SV 1
14 BOOST IN TOP A 2 23 T GATE DR A
IN BOTTOM A 3 22 T GATE FB A
IN TOP 2
13 T GATE DR
LT1160CN LT1162CSW
UV OUT A 4 21 T SOURCE A
IN BOTTOM 3 T GATE FB
12
+
LT1160CS LT1162ISW
GND A 5 20 PV A
UV OUT 4 11 T SOURCE
LT1160IN
B GATE FB A 6 19 B GATE DR A
+
SGND 5 10 PV
+
SV B 7 18 BOOST B
LT1160IS
PGND 6 9 B GATE DR
IN TOP B 8 17 T GATE DR B
NC 7 8 B GATE FB IN BOTTOM B 9 16 T GATE FB B
OBSOLETE
UV OUT B 10 15 T SOURCE B
N PACKAGE
+
PART NUMBERS
GND B 11 14 PV B
14-LEAD PDIP
B GATE FB B B GATE DR B
12 13
S PACKAGE
LT1162CN
14-LEAD PLASTIC SO
N PACKAGE SW PACKAGE
LT1162IN
24-LEAD PDIP 24-LEAD PLASTIC SO WIDE
T = 125C, = 70C/ W (N)
JMAX JA
T = 125C, = 110C/ W (S)
JMAX JA
T = 125C, = 58C/ W (N)
JMAX JA
T = 125C, = 80C/ W (SW)
JMAX JA
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full operating
+
temperature range, otherwise specifications are at T = 25C. Test Circuit, T = 25C, V = V = 12V, V = 0V, C =
A A BOOST TSOURCE GATE
3000pF. Gate Feedback pins connected to Gate Drive pins, unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
+
I DC Supply Current (Note 4) V = 15V, V = 0.8V, V = 2V 7 11 15 mA
S INTOP INBOTTOM
+
V = 15V, V = 2V, V = 0.8V 7 10 15 mA
INTOP INBOTTOM
+
V = 15V, V = 0.8V, V = 0.8V 7 11 15 mA
INTOP INBOTTOM
+
I Boost Current (Note 4) V = 15V, V = 60V, V = 75V, 3 4.5 6 mA
BOOST TSOURCE BOOST
V = V = 0.8V
INTOP INBOTTOM
V Input Logic Low 1.4 0.8 V
IL
V Input Logic High 2 1.7 V
IH
I Input Current V = V = 4V 725 A
IN INTOP INBOTTOM
+ +
V V Undervoltage Start-Up Threshold 8.4 8.9 9.7 V
UVH
+ +
V V Undervoltage Shutdown Threshold 7.8 8.3 8.8 V
UVL
V V Undervoltage Start-Up Threshold V = 60V (V V ) 8.8 9.3 9.8 V
BUVH BOOST TSOURCE BOOST TSOURCE
V V Undervoltage Shutdown Threshold V = 60V (V V ) 8.2 8.7 9.2 V
BUVL BOOST TSOURCE BOOST TSOURCE
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