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Introduction, characteristics, and applications of Texas Instruments LM2005 half-bridge gate driver

2/16/2024 9:05:31 AM

Summary: High-voltage gate driver for driving high-side and low-side n-channel mosfets.

LM2005 Texas Instruments

The Texas Instruments LM2005 Half-Bridge Gate Driver is a compact, high-voltage gate driver designed to drive high-side and low-side n-channel MOSFETs in synchronous buck or half-bridge configurations. The integrated boot diode saves board space and reduces system cost by eliminating the need for external discrete diodes.

-1V DC and -19.5V transient negative voltage handling on the SH pin improves system robustness in high-noise applications. The small, thermally enhanced 8-pin WSON package improves PCB layout by allowing the driver to be closer to the motor phases. The Texas Instruments LM2005 is also available in an 8-pin SOIC package that is pin-compatible with industry standards. Both the low-side and high-side power rails are equipped with undervoltage lockout (UVLO) for protection during power on and off.


characteristic

  • Driving two n-channel mosfets in a half-bridge configuration

  • Integrated bootstrap diode

  • Typical 8V undervoltage lockout on GVDD

  • BST absolute maximum voltage 107V

  • -19.5V absolute maximum negative transient voltage handling SH

  • 0.5A/0.8A peak source/sink current

  • Typical propagation delay 115ns


app

  • Brushless DC (BLDC) motor

  • Permanent Magnet Synchronous Motor (PMSM)

  • cordless vacuum cleaner

  • Cordless Garden and Power Tools

  • Electric bikes and electric scooters

  • Battery testing equipment

  • Offline uninterruptible power supply (UPS)

  • Universal MOSFET or IGBT driver


Functional block diagram


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