LM5100A_15 Datasheet, PDF (1/37 Pages) Texas Instruments – High-Voltage, High-Side and Low-Side Gate Drivers

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LM5100A, LM5100B, LM5100C
LM5101A, LM5101B, 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
1 Features
•1 Drives Both a High-Side and Low-Side N-Channel
MOSFETs
• Independent High- and Low-Driver Logic Inputs
• Bootstrap Supply Voltage up to 118 V DC
• Fast Propagation Times (25-ns Typical)
• Drives 1000-pF Load With 8-ns Rise and Fall
Times
• Excellent Propagation Delay Matching (3-ns
Typical)
• Supply Rail Undervoltage Lockout
• Low Power Consumption
• Pin Compatible With HIP2100/HIP2101
2 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
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).
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. Undervoltage lockout is provided on both the
low-side and the high-side power rails. These devices
are available in the standard SOIC-8 pin, SO
PowerPAD-8 pin, and the WSON-10 pin packages.
The LM5100C and LM5101C are also available in
MSOP-PowerPAD-8 package. The LM5101A is also
available in WSON-8 pin package.
Device Information⁽¹⁾
PART NUMBER INPUT THRESHOLD
PEAK OUTPUT
CURRENT
LM5100A
CMOS
3A
LM5101A
TTL
3A
LM5100B
CMOS
2A
LM5101B
TTL
2A
LM5100C
CMOS
1A
LM5101C
TTL
1A
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Block Diagram
HB
UVLO
LEVEL
SHIFT
HI
UVLO
LI
DRIVER
HO
HS
VDD
DRIVER
LO
GND
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.