LM5100 Datasheet, PDF (1/18 Pages) National Semiconductor (TI) – High Voltage High Side and Low Side Gate Driver

NRND
LM5100, LM5101
www.ti.com
SNVS267C – MAY 2004 – REVISED MARCH 2005
LM5100 /LM5101 High Voltage High Side and Low Side Gate Driver
Check for Samples: LM5100, LM5101
FEATURES
1
•2 Drives Both a High Side and Low Side N-
Channel MOSFET
• Independent High and Low Driver Logic Inputs
(TTL for LM5101 or CMOS for LM5100)
• Bootstrap Supply Voltage Range up to 118V
DC
• Fast Propagation Times (25 ns Typical)
• Drives 1000 pF Load with 15 ns Rise and Fall
Times
• Excellent Propagation Delay Matching (3 ns
Typical)
• Supply Rail Under-voltage Lockouts
• Low Power Consumption
• Pin Compatible with HIP2100/HIP2101
TYPICAL APPLICATIONS
• Current Fed Push-pull Converters
• Half and Full Bridge Power Converters
• Synchronous Buck Converters
• Two Switch Forward Power Converters
• Forward with Active Clamp Converters
PACKAGE
• SOIC-8
• WSON-10 (4 mm x 4 mm)
DESCRIPTION
The LM5100/LM5101 High Voltage Gate Drivers are
designed to drive both the high side and the low side
N-Channel MOSFETs in a synchronous buck or a
half bridge configuration. The floating high-side driver
is capable of operating with supply voltages up to
100V. The outputs are independently controlled with
CMOS input thresholds (LM5100) or TTL input
thresholds (LM5101). An integrated high voltage
diode is provided to charge the high side gate drive
bootstrap capacitor. A robust level shifter operates at
high speed while consuming low power and providing
clean level transitions from the control logic to the
high side gate driver. Under-voltage lockout is
provided on both the low side and the high side
power rails. This device is available in the standard
SOIC-8 pin and the WSON-10 pin packages.
1
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004–2005, Texas Instruments Incorporated