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Texas Instruments LM2105EVM Driver Evaluation Module (EVM)

Texas Instruments LM2105EVM Driver Evaluation Module (EVM) is designed to evaluate the LM2105 performance primarily. The LM2105 is a 105V boot voltage, high-side, low-side driver with a 0.5A peak source and 0.8A sink current for driving two N-channel MOSFETs. The same board can be used to evaluate other pin-to-pin compatible parts in the supported package. The LM2105 has low propagation delay and low propagation delay matching between the driver outputs’ high- and low-side rising and falling edges for reliable timing of the gate-drive signals.

The Texas Instruments LM2105EVM can evaluate the LM2105 and compare it to the datasheet parameters or externally connected to power devices with source and sink gate resistance flexibility provisions. The LM2105EVM evaluation board uses surface-mount test points allowing connection to INL, INH, GVDD, and BST inputs. A variety of other test points are available for probing the LM2105. The input bias is configured such that the BST-SH high-side bias can be sourced from GVDD, or an additional external bias can be added to provide BST-SH directly. The high- and low-side driver output returns are separated on SH and GND, respectively, to allow evaluation of the LM2105 SH negative voltage capabilities.

Features

  • Evaluation module for the low-voltage features of the LM2105 gate driver
  • 5V to 18V VCC power supply range
  • PCB layout optimized for bias supply bypassing cap, gate-drive resistance selection
  • TTL and CMOS-compatible inputs
  • Capacitive load, external gate drive resistor, and diode for gate drive network evaluation
  • Allows quick verification of most of the data sheet parameters
  • Test points allow probing all the key pins of the LM2105

Required Equipment

  • Power Supply
    • DC power supply with voltage and current above 20V and 1A, for example, Agilent E3634A
  • Function Generator
    • Two-channel function generator over 10MHz, for example, Tektronics AFG3252
  • Digital Multimeter
    • DMM with voltage and current above 25V and 1A, for example, Fluke 187
  • Oscilloscope
    • Four-channel oscilloscope with 500MHz or greater bandwidth, for example, DPO 7054

Bench Setup

Mechanical Drawing - Texas Instruments LM2105EVM Driver Evaluation Module (EVM)

Texas Instruments LM2105EVM Driver Evaluation Module (EVM)