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LM5100A

ACTIVE

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

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Data sheet

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UCC27289 ACTIVE 2.5-A to 3.5-A, 120-V half bridge gate driver with 8-V UVLO and enable Improved negative voltage handling and tighter propagation delays.

LM5100A

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 CMOS Channel input logic CMOS 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 CMOS Channel input logic CMOS 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
  • 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 Using Half-Bridge Gate Driver to Achieve 100% Duty Cycle for High Side FET PDF | HTML 25 Mar 2024
Application note Challenges and Solutions for Half-Bridge Gate Drivers in Bidirectional DC-DC Converters PDF | HTML 24 Jan 2024
Application note Bootstrap Circuitry Selection for Half Bridge Configurations (Rev. A) PDF | HTML 08 Sep 2023
Application note Voltage Fed Full Bridge DC-DC & DC-AC Converter High-Freq Inverter Using C2000 (Rev. D) 07 Apr 2021
Application note Implementing High-Side Switches Using Half-Bridge Gate Drivers for 48-V Battery. 12 May 2020
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
Application brief Small Price Competitive 100-V Driver for 48-V BLDC Motor Drives 22 Oct 2019
Application note Maximizing DC/DC converter designs with UCC27282 18 Jan 2019
Application note UCC27282 Improving motor drive system robustness 11 Jan 2019
More literature Fundamentals of MOSFET and IGBT Gate Driver Circuits (Replaces SLUP169) (Rev. A) 29 Oct 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note AN-1317 Selection of External Bootstrap Diode for LM510X Devices (Rev. B) 04 May 2018
EVM User's guide AN-1299 LM5041 Evaluation Board (Rev. A) 06 May 2013

Design & development

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Simulation model

LM5100A PSpice Transient Model

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Simulation model

LM5100A TINA-TI Transient Reference Design

SNOM353.TSC (787 KB) - TINA-TI Reference Design
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Simulation model

LM5100A TINA-TI Transient Spice Model

SNOM354.ZIP (12 KB) - TINA-TI Spice Model
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Simulation model

LM5100A Unencrypted PSpice Transient Model

SNOM570.ZIP (2 KB) - PSpice 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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Simulation tool

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HSOIC (DDA) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian
WSON (DPR) 10 Ultra Librarian
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