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LM2103

ACTIVE

107-V, 0.5-A/0.8-A half-bridge gate driver with 8-V UVLO, dead time and inverting input pin.

Product details

Bootstrap supply voltage (max) (V) 107 Power switch IGBT, MOSFET Input supply voltage (min) (V) 9 Input supply voltage (max) (V) 18 Peak output current (A) 0.65 Operating temperature range (°C) -40 to 125 Undervoltage lockout (typ) (V) 8 Rating Catalog Fall time (ns) 18 Iq (mA) 0.0333 Input threshold CMOS, TTL Channel input logic Inverting, Noninverting Switch node voltage (V) -1 Features Dead time control Driver configuration Single input
Bootstrap supply voltage (max) (V) 107 Power switch IGBT, MOSFET Input supply voltage (min) (V) 9 Input supply voltage (max) (V) 18 Peak output current (A) 0.65 Operating temperature range (°C) -40 to 125 Undervoltage lockout (typ) (V) 8 Rating Catalog Fall time (ns) 18 Iq (mA) 0.0333 Input threshold CMOS, TTL Channel input logic Inverting, Noninverting Switch node voltage (V) -1 Features Dead time control Driver configuration Single input
SOIC (D) 8 29.4 mm² 4.9 x 6
  • Drives two N-channel MOSFETs in half-bridge configuration
  • 8-V typical undervoltage lockout on GVDD
  • 107-V absolute maximum voltage on BST
  • –19.5-V absolute maximum negative transient voltage handling on SH
  • 0.5-A/0.8-A peak source/sink currents
  • 475-ns typical fixed internal dead-time
  • Built-in cross conduction prevention
  • 115-ns typical propagation delay
  • Inverting input pin INL
  • Drives two N-channel MOSFETs in half-bridge configuration
  • 8-V typical undervoltage lockout on GVDD
  • 107-V absolute maximum voltage on BST
  • –19.5-V absolute maximum negative transient voltage handling on SH
  • 0.5-A/0.8-A peak source/sink currents
  • 475-ns typical fixed internal dead-time
  • Built-in cross conduction prevention
  • 115-ns typical propagation delay
  • Inverting input pin INL

The LM2103 is a compact, high-voltage gate driver designed to drive both the high-side and the low-side N-channel MOSFETs in a synchronous buck or a half-bridge configuration. The INL inverting input allows the driver to be used in either dual or single PWM input applications.

The fixed dead-time and the –1-V DC and –19.5-V transient negative voltage handling on the SH pin improve the system robustness in high noise applications. The LM2103 is available in an 8-pin SOIC package compatible with industry standard pinouts. Undervoltage lockout (UVLO) is provided on both the low-side and the high-side power rails for protection during power up and power down.

The LM2103 is a compact, high-voltage gate driver designed to drive both the high-side and the low-side N-channel MOSFETs in a synchronous buck or a half-bridge configuration. The INL inverting input allows the driver to be used in either dual or single PWM input applications.

The fixed dead-time and the –1-V DC and –19.5-V transient negative voltage handling on the SH pin improve the system robustness in high noise applications. The LM2103 is available in an 8-pin SOIC package compatible with industry standard pinouts. Undervoltage lockout (UVLO) is provided on both the low-side and the high-side power rails for protection during power up and power down.

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Technical documentation

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* Data sheet LM2103 107-V, 0.5-A/0.8-A Half-Bridge Driver with 8-V UVLO, Dead Time, and Inverting Input datasheet (Rev. A) PDF | HTML 09 Aug 2023
Application note How to Choose a Gate Driver for DC Motor Drives PDF | HTML 05 Oct 2023
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

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Evaluation board

LM2105EVM — LM2105 evaluation module for 105-V half-bridge driver with integrated bootstrap diode

The LM2105 evaluation module (EVM) is a platform for evaluating LM2105 performance. LM2105 is a 105-V, boot-voltage, high-side, low-side driver with 0.5-A peak source and 0.8-A sink current for driving two N-channel metal–oxide–semiconductor field-effect transistors (MOSFETs). The same (...)

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LM2103 PSpice Transient Model

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PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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