TI-LM5100A.pdf
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LM5100A
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LM5100B
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LM5100C
LM5101A
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LM5101B
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LM5101C
SNOSAW2Q –SEPTEMBER 2006–REVISED NOVEMBER 2015
LM5100A/B/C, LM5101A/B/C 3-A, 2-A, and 1-A High-Voltage, High-Side
and Low-Side Gate Drivers
An integrated high-voltage diode is provided to
1 Features
charge the high-side gate drive bootstrap capacitor. A
1
• Drives Both a High-Side and Low-Side N-Channel
robust level shifter operates at high speed while
MOSFETs
consuming low power and providing clean level
• Independent High- and Low-Driver Logic Inputs
transitions from the control logic to the high-side gate
driver. Undervoltage lockout is provided on both the
• Bootstrap Supply Voltage up to 118 V DC
low-side and the high-side power rails. These devices
• Fast Propagation Times (25-ns Typical)
are available in the standard SOIC-8 pin, SO
• Drives 1000-pF Load With 8-ns Rise and Fall
PowerPAD-8 pin, and the WSON-10 pin packages.
Times
The LM5100C and LM5101C are also available in
MSOP-PowerPAD-8 package. The LM5101A is also
• Excellent Propagation Delay Matching (3-ns
available in WSON-8 pin package.
Typical)
• Supply Rail Undervoltage Lockout
Device Information
(1)
• Low Power Consumption
PEAK OUTPUT
PART NUMBER INPUT THRESHOLD
CURRENT
• Pin Compatible With HIP2100/HIP2101
LM5100A CMOS 3 A
2 Applications
LM5101A TTL 3 A
LM5100B CMOS 2 A
• Current-Fed Push-Pull Converters
LM5101B TTL 2 A
• Half and Full Bridge Power Converters
LM5100C CMOS 1 A
• Synchronous Buck Converters
LM5101C TTL 1 A
• Two Switch Forward Power Converters
(1) For all available packages, see the orderable addendum at
• Forward with Active Clamp Converters
the end of the data sheet.
3 Description
The LM5100A/B/C and LM5101A/B/C 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 100 V. The A versions provide
a full 3-A of gate drive, while the B and C versions
provide 2 A and 1 A, respectively. The outputs are
independently controlled with CMOS input thresholds
(LM5100A/B/C) or TTL input thresholds
(LM5101A/B/C).
Simplified Block Diagram
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
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