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LM5101A

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3-A, 100-V half bridge gate driver with 8-V UVLO and TTL inputs

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Data sheet

LM5101A

ACTIVE
Data sheet Order now

Product details

Bootstrap supply voltage (max) (V) 100 Power switch MOSFET Input supply voltage (min) (V) 9 Input supply voltage (max) (V) 14 Peak output current (A) 3 Operating temperature range (°C) -40 to 125 Undervoltage lockout (typ) (V) 8 Rating Catalog Propagation delay time (µs) 0.025 Rise time (ns) 10 Fall time (ns) 10 Iq (mA) 0.01 Input threshold TTL Channel input logic TTL Switch node voltage (V) -1 Driver configuration Dual, Independent
Bootstrap supply voltage (max) (V) 100 Power switch MOSFET Input supply voltage (min) (V) 9 Input supply voltage (max) (V) 14 Peak output current (A) 3 Operating temperature range (°C) -40 to 125 Undervoltage lockout (typ) (V) 8 Rating Catalog Propagation delay time (µs) 0.025 Rise time (ns) 10 Fall time (ns) 10 Iq (mA) 0.01 Input threshold TTL Channel input logic TTL Switch node voltage (V) -1 Driver configuration Dual, Independent
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 SOIC (D) 8 29.4 mm² 4.9 x 6 WSON (DPR) 10 16 mm² 4 x 4 WSON (NGT) 8 16 mm² 4 x 4
  • 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
  • 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

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.

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.
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Technical documentation

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Type Title Date
* Data sheet LM5100A/B/C, LM5101A/B/C 3-A, 2-A, and 1-A High-Voltage, High-Side and Low-Side Gate Drivers datasheet (Rev. Q) PDF | HTML 03 Dec 2015
Application note Challenges and Solutions for Half-Bridge Gate Drivers in Bidirectional DC-DC Converters PDF | HTML 24 Jan 2024
Application note Understanding and comparing peak current capability of gate drivers PDF | HTML 30 Mar 2021
Application brief External Gate Resistor Selection Guide (Rev. A) 28 Feb 2020
Application brief Understanding Peak IOH and IOL Currents (Rev. A) 28 Feb 2020
More literature Fundamentals of MOSFET and IGBT Gate Driver Circuits (Replaces SLUP169) (Rev. A) 29 Oct 2018
Application note AN-1317 Selection of External Bootstrap Diode for LM510X Devices (Rev. B) 04 May 2018
EVM User's guide AN-1331 LM5033 Evaluation Board (Rev. A) 06 May 2013

Design & development

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LM5101A PSpice Transient Model

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Simulation model

LM5101A TINA-TI Transient Reference Design

SNOM355.TSC (785 KB) - TINA-TI Reference Design
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Simulation model

LM5101A TINA-TI Transient Spice Model

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LM5101A Unencrypted PSpice Transient Model

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Calculation tool

SNVR521 — LM51xx Schematic Review Template

Supported products & hardware

Supported products & hardware

Products
Half-bridge drivers
LM25101 — 3-A, 2-A or 1-A half bridge gate driver with 8-V UVLO and TTL inputs LM5100A — 3-A, 100-V half bridge gate driver with 8-V UVLO and CMOS inputs LM5100B — 2-A, 100-V half bridge gate driver with 8-V UVLO and CMOS inputs LM5100C — 1-A, 100-V half bridge gate driver with 8-V UVLO and CMOS Imputs LM5101 — High voltage high side and low side gate driver LM5101A — 3-A, 100-V half bridge gate driver with 8-V UVLO and TTL inputs LM5101B — 2-A, 100-V half bridge gate driver with 8-V UVLO and TTL inputs LM5101C — 1-A, 100-V half bridge gate driver with 8-V UVLO and TTL Imputs LM5102 — 2-A, 100-V half bridge gate driver with 8-V UVLO and programmable delay LM5104 — 2-A, 100-V half bridge gate driver with 8-V UVLO and adaptive delay LM5106 — 1.2-A, 1.8-A 100-V half bridge gate driver with 8V-UVLO and programmable dead-time LM5107 — 1.4-A, 100-V half bridge gate driver with 8-V UVLO LM5108 — 2.6-A, 110-V half bridge gate driver with enable and interlock LM5109A — 1-A, 100-V half bridge gate driver with 8-V UVLO LM5109B — 1-A, 100-V half bridge gate driver with 8-V UVLO and high noise immunity
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Package Pins CAD symbols, footprints & 3D models
HSOIC (DDA) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian
WSON (DPR) 10 Ultra Librarian
WSON (NGT) 8 Ultra Librarian
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