STMicroelectronics L6384D013TR

Overview

L6384D013TR from STMicroelectronics is a high-voltage half-bridge gate driver IC designed to control N-channel power MOSFETs and IGBTs in switching power converters. It features 600 V rail capability, ±50 V/ns dV/dt immunity across −45°C to +125°C, 400 mA source / 650 mA sink output drive, 50/30 ns rise/fall times (1 nF load), and integrated bootstrap diode replacement. It is used in motor drives, SMPS, and induction heating inverters.

For engineers reviewing the L6384D013TR datasheet, L6384D013TR pinout, L6384D013TR application, or L6384D013TR equivalent, key selection criteria include floating supply voltage range (−1 to 618 V), dead time programmability via external resistor (0.4–3.1 µs), UVLO thresholds (12 V turn-on / 10 V turn-off), CMOS/TTL Schmitt-trigger inputs, and SO8 package thermal resistance (150 °C/W).

Technical Context

The L6384D013TR implements a BCD "OFF-LINE" process-based half-bridge architecture with matched propagation delays between high-side and low-side drivers to support stable high-frequency operation up to 400 kHz. Its internal bootstrap driver replaces an external fast-recovery diode using a synchronized DMOS switch and series diode, reducing leakage and board space.

Dead time is set by a high-impedance pin (DT/SD) sourcing 28 µA, enabling precise adjustment via resistor (47–270 kΩ) or voltage bias. The device integrates undervoltage lockout with 2 V hysteresis, logic-level compatible inputs (V_IL ≤ 1.5 V, V_IH ≥ 3.6 V), and clamping on V_CC (15.6 V typ.) to protect against overvoltage transients.

Key Specifications

Pinout & Package

The L6384D013TR is housed in an SO8 (Small Outline 8-pin) package with 150 °C/W junction-to-ambient thermal resistance and standard 1.27 mm pitch. Pin 1 is IN (logic input), Pin 2 is V_CC, Pin 3 is DT/SD (dead time/shutdown), Pin 4 is GND, Pin 5 is LVG (low-side gate output), Pin 6 is V_OUT (floating reference), Pin 7 is HVG (high-side gate output), and Pin 8 is V_BOOT (bootstrap supply).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage half-bridge gate driver applications.

Compared with IR2104STRPBF and UCC27211DR, the L6384D013TR uniquely combines 600 V rail tolerance, programmable dead time, and integrated bootstrap driver in SO8 - eliminating three external components while maintaining full industrial temperature operation and dV/dt immunity.

Availability

L6384D013TR is available at Aetrix Electronics and suitable for motor drive inverters, industrial SMPS, and induction heating systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for L6384D013TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in power management, analog, microcontrollers, and automotive-grade ICs.

The L6384 series belongs to ST's high-voltage gate driver product line, engineered specifically for rugged industrial and appliance applications demanding reliable half-bridge control at up to 600 V with minimal external components.

FAQ

What is the maximum allowable bootstrap capacitor voltage drop for reliable L6384D013TR operation?

The bootstrap capacitor voltage drop must remain below the minimum V_BOOT − V_OUT requirement of 17 V (per recommended operating conditions). With typical V_BOOT = 17 V above V_OUT, a drop exceeding ~1.5 V risks insufficient high-side gate drive, especially under high gate charge loads or elevated temperatures. Designers should size C_BOOT ≥ 10× C_GATE and verify charging time exceeds 5 µs at minimum duty cycle.

Can the DT/SD pin be left unconnected or tied directly to V_CC?

No - the DT/SD pin must never be left floating or pulled directly to V_CC through low impedance. Its 28 µA internal current source requires either a resistor to ground (47–270 kΩ) or a controlled voltage bias (0.5–2.7 V). Floating or stiff V_CC connection causes undefined dead time or unintended shutdown due to noise sensitivity and internal current-source loading.

Does the integrated bootstrap driver require special PCB layout considerations?

Yes - the bootstrap driver's synchronous DMOS switch demands tight coupling between LVG and V_BOOT/V_OUT nodes. Layout must minimize loop inductance: place C_BOOT adjacent to pins 6 and 8, use short wide traces, avoid vias in the bootstrap path, and isolate V_OUT from noisy ground returns to preserve dV/dt immunity and prevent premature DMOS turn-on.

How does the L6384D013TR handle undervoltage conditions on V_CC?

The device incorporates a precision UVLO with 12.0 V turn-on and 10.0 V turn-off thresholds (2 V hysteresis). When V_CC falls below 10.0 V, both HVG and LVG outputs are forced low, disabling the bridge. Recovery only occurs after V_CC rises above 12.0 V, preventing erratic switching during brownouts and ensuring safe restart behavior in power supply applications.