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Introduction, characteristics, and applications of Texas Instruments LM2104 half-bridge gate driver

2/13/2024 9:35:50 AM

Summary: Designed to drive high-side and low-side n-channel mosfets in a half-bridge configuration.

LM2104 Texas Instruments

The Texas Instruments LM2104 half-bridge gate driver is designed to drive high-side and low-side n-channel MOSFETs in synchronous buck or half-bridge configurations. This gate driver features 8V typical undervoltage lockout on GVDD, 107V absolute maximum voltage on BST, and -19.5V maximum negative transient voltage handling on SH. The LM2104 driver features a 475ns typical fixed internal dead time, 115ns typical propagation delay and built-in cross-conduction prevention. This compact high-voltage gate driver is available in an 8-pin SOIC package and is pin-compatible with industry standards. Typical applications include brushless DC (BLDC) motors, permanent magnet synchronous motors (PMSM), servo/stepper motor drives, cordless vacuum cleaners, e-bikes, e-scooters and battery test equipment.


characteristic

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

  • Typical 8V undervoltage lockout on GVDD

  • Typical fixed internal dead time is 475ns

  • Typical propagation delay 115ns

  • -19.5V absolute maximum negative transient voltage handling SH

  • BST absolute maximum voltage 107V

  • 0.5A/0.8A peak source/sink current

  • Built-in anti-cross conduction

  • Close logic input pin SD

  • Single input pin IN


app

  • Brushless DC (BLDC) motor

  • Servo and stepper motor drives

  • Cordless Garden and Power Tools

  • cordless vacuum cleaner

  • Battery testing equipment

  • Electric bikes and electric scooters

  • Offline uninterruptible power supply (UPS)

  • Permanent Magnet Synchronous Motor (PMSM)

  • Universal MOSFET or IGBT driver


Functional block diagram



Typical application circuit


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