L6498LTR

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The L6498LTR is a high-efficiency gate driver IC designed for power-switching applications such as switched-mode power supplies (SMPS) and high-power motor control. It provides the high-current drive and control necessary to switch high-power MOSFETs and IGBTs, and is capable of switching up to 12A. The device comes in a small form factor, making it ideal for space-constrained applications.

The L6498LTR provides both high-side and low-side gate drive outputs. The output can be programmed to provide low-side or high-side gate driving with a single register setting. The device supports sleep mode, under-voltage lockout, over-current protection, and is capable of operating at rising or falling edge mode. The gate drive current is adjustable and the low-side or high-side MOSFET output currents are adjustable.

The L6498LTR is designed for use with an external power MOSFET and operates from a single supply of up to 40V. It provides an adjustable gate drive current from 0.24A to 12A and maximum switching speed of 40V/ns. The device features an adjustable open-drain fault logic output and a logic-controlled sleep mode. The device also features a fault-state detecting input, which can be used to detect high-side power MOSFET faults.

The L6498LTR is capable of driving both logic as well as power stage MOSFETs. The logic drive MOSFETs are used in applications that require fast switching and allow current flow in either direction through the power stage MOSFET. The power stage MOSFETs are used in applications where higher current is required and the direction of current flow is fixed.

The working principle of the L6498LTR is based on charge-pump technology. A built-in charge pump switches between high- and low-side drive outputs and each time supplies the necessary gate drive voltage to charge or discharge the gate. The gate drive current is adjustable through a register setting and the ramp-up time is adjustable through a compensation capacitor.

The L6498LTR can be used in a wide range of applications including inverter and motor-control circuits, switched-mode power supplies, automotive equipment and multi-phase power supply designs. It provides reliable gate-drive performance in complex multi-switch power supplies and in harsh industrial environments where high transient temperatures and high-voltage spikes can be expected.

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