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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Gate Drivers

STMicroelectronics L6393D

Name: L6393D
Brand: STMicroelectronics
SKU: L6393D
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L6393D

Manufacturer:: STMicroelectronics

Category:: Gate Drivers

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: L6393D.pdf

Description:: IC GATE DRVR HALF-BRIDGE 14SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

L6393D from STMicroelectronics is a high-voltage half-bridge gate driver IC designed for N-channel MOSFETs and IGBTs in motor control and power conversion systems. It supports up to 600 V rail voltage, delivers 290 mA source / 430 mA sink peak output current, achieves 75 ns rise / 35 ns fall times with 1 nF load, features integrated bootstrap diode and uncommitted comparator, and is used in industrial fan drivers and HID ballasts.

For engineers reviewing the L6393D datasheet, L6393D pinout, L6393D application, or L6393D equivalent, key selection criteria include dV/dt immunity (±50 V/ns), adjustable deadtime via external resistor, 3.3 V/5 V CMOS/TTL-compatible inputs with hysteresis, and SO-14 package compatibility with high-side floating operation up to 600 V.

Technical Context

The L6393D integrates dual gate drivers - one low-side (LVG) referenced to GND and one high-side (HVG) floating on the BOOT node - with logic-level inputs (PHASE, BRAKE, SD) that feed an internal AND gate controlling complementary output states. Its bootstrap driver uses an integrated DMOS + series diode structure instead of an external fast-recovery diode, reducing BOM count and leakage.

It embeds an uncommitted comparator (CP+, CP−, CPOUT) usable for overcurrent or overtemperature protection, and implements deadtime adjustment via a resistor (DT pin) that sets non-overlap timing between HVG and LVG transitions. The device operates across −40 °C to +125 °C with UVLO monitoring on both VCC (9.5 V turn-on) and VBO (9 V turn-on).

Key Specifications

Parameter	Value and Actual Design Meaning
High-side voltage rating	600 V max rail - enables direct use in 400 V AC rectified bus applications without level-shifting.
Output drive strength	290 mA source / 430 mA sink - sufficient to rapidly charge/discharge 1–3 nF gate capacitances of 600 V MOSFETs.
Propagation delay	50–200 ns (typ. 125 ns) - ensures precise timing control in high-frequency motor drives up to 800 kHz.
Deadtime adjustability	0.1–3.4 μs range via DT resistor - prevents shoot-through in half-bridge topologies under varying load conditions.
dV/dt immunity	±50 V/ns - maintains reliable operation during fast switching transients in noisy industrial environments.
Logic input compatibility	3.3 V/5 V CMOS/TTL with hysteresis - allows direct interfacing with microcontrollers and DSPs without level shifters.
Bootstrap integration	On-chip DMOS + diode - eliminates external bootstrap diode, reduces leakage, and simplifies PCB layout.

Pinout & Package

Package: SO-14 (ECOPACK® compliant, surface-mount, 1.27 mm pitch, 8.75 × 6.2 mm body).

Pin/Terminal	Circuit Role	Design Meaning
1 PHASE	Logic input (active high)	Controls high-side ON / low-side OFF state when BRAKE = high; primary phase command signal.
2 SD	Shutdown input (active low)	Forces both outputs low regardless of PHASE/BRAKE; provides fail-safe disable with <1 V sink capability.
3 BRAKE	Logic input (active low)	Enables low-side conduction mode: when low, LVG stays ON and HVG stays OFF for braking or slow decay.
4 VCC	Low-side supply	Powers logic and low-side driver; UVLO threshold at 9.5 V ensures stable operation down to 10 V min.
5 DT	Deadtime setting	Resistor-to-ground sets non-overlap time between HVG/LVG transitions; 37 kΩ → ~0.6 μs typical.
6 CPOUT	Comparator open-drain output	Drives external protection circuitry (e.g., fault latch or MCU interrupt); requires pull-up resistor.
7 GND	Ground reference	Common return for low-side section and logic; separate from floating high-side ground (OUT pin).
8 CP− / 9 CP+	Comparator inputs	Differential sense inputs for overcurrent/overtemperature detection; offset ±15 mV, delay 90–130 ns.
10 LVG	Low-side gate driver output	Directly drives N-MOSFET gate; capable of 430 mA sink to ensure fast turn-off and reduce Miller effects.
11 NC	No connect	Not internally bonded; must remain unconnected per datasheet to avoid parasitic coupling.
12 OUT	Floating high-side common	Reference node for high-side driver; connects to phase node of half-bridge (e.g., motor winding or lamp cathode).
13 HVG	High-side gate driver output	Drives high-side N-MOSFET gate referenced to OUT; withstands up to VBOOT + 0.3 V (620 V max).
14 BOOT	Bootstrap supply input	Provides floating supply for high-side driver; internal DMOS charges CBOOT during LVG ON period.

Key Features

Feature	Design Value
Integrated bootstrap diode	Replaces external fast-recovery diode, eliminating its leakage path and reducing component count by one.
Uncommitted comparator	Configurable for overcurrent sensing using shunt resistor or NTC thermistor feedback, with 90 ns response.
Adjustable deadtime	Programmable via single resistor (DT pin), enabling precise shoot-through prevention across temperature and load.
3.3 V/5 V logic interface	Hysteresis on all inputs ensures noise immunity and compatibility with modern low-voltage MCUs without glue logic.
dV/dt immune architecture	±50 V/ns tolerance maintained over full −40 °C to +125 °C range - critical for reliability in EMI-heavy factory settings.

Applications

Industrial Fan Control

HID Lamp Ballast

Use Scenario: Variable-speed 3-phase BLDC fans in HVAC and manufacturing equipment.

IC Role / Device Role / Timing Role: Half-bridge gate driver controlling upper/lower MOSFET pairs per phase; manages deadtime to prevent shoot-through during PWM commutation.

Use Value: Enables >800 kHz switching for reduced acoustic noise and improved torque ripple suppression in compact fan modules.

Use Scenario: Electronic ballasts for 70–400 W high-intensity discharge lamps in street lighting and industrial fixtures.

IC Role / Device Role / Timing Role: Drives resonant half-bridge inverter stage; synchronizes gate timing with zero-voltage switching (ZVS) envelope.

Use Value: 600 V rail rating and dV/dt immunity allow direct connection to rectified mains, eliminating isolation transformers.

Home Appliance Motor Drive

Factory Automation Actuator

Use Scenario: Washing machine drum motor and dishwasher pump control with sensorless FOC.

IC Role / Device Role / Timing Role: Gate driver for inverter leg; BRAKE input enables controlled current decay during direction reversal or stall recovery.

Use Value: Integrated comparator supports real-time overcurrent shutdown (<100 ns latency), protecting MOSFETs during jam events.

Use Scenario: Compact servo drives for robotic joints and linear actuators in PLC-controlled assembly lines.

IC Role / Device Role / Timing Role: High-side/low-side driver in compact half-bridge module; DT pin allows field tuning of deadtime for different MOSFETs.

Use Value: SO-14 footprint and bootstrap integration reduce PCB area by >30% vs. discrete driver + diode solutions.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IR2104S	Lower voltage rating (600 V same), but no integrated bootstrap diode or uncommitted comparator; 200 mA/360 mA drive.	Lacks on-chip protection resources - requires external comparator and bootstrap diode, increasing BOM and layout complexity.	Choose when cost sensitivity outweighs design simplicity and protection integration needs.
UCC27211D	Higher drive strength (4 A source/sink), 120 V max high-side voltage, no bootstrap circuit - requires isolated supply.	Designed for low-voltage synchronous buck or GaN-based converters; unsuitable for 400 V AC-fed half-bridges.	Prefer only in low-side-only or isolated-supply architectures where 600 V floating operation is unnecessary.

Compared with IR2104S and UCC27211D, the L6393D uniquely combines 600 V floating capability, integrated bootstrap, and protection comparator in SO-14 - making it optimal for cost-constrained, space-limited industrial half-bridge designs requiring self-contained operation.

Availability

L6393D is available at Aetrix Electronics and suitable for industrial fan control, HID ballast design, and home appliance motor drives requiring stable component supply across extended production lifecycles.

Supply support for L6393D 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, MEMS, and microcontroller technologies.

The L6393D belongs to ST's BCD™ "offline" high-voltage driver product line, engineered specifically for robust, integrated gate driving in AC-powered industrial and appliance motor control systems.

FAQ

What is the minimum recommended bootstrap capacitor value for L6393D?

The minimum CBOOT depends on external MOSFET gate charge (Qg) and required voltage hold-up. For Qg = 30 nC and 10 V gate drive, 100 nF yields ~300 mV droop per cycle. ST recommends ≥100 nF ceramic with low ESR; larger values (e.g., 220–470 nF) improve stability at high duty cycles or low switching frequencies.

Can L6393D drive IGBTs directly?

Yes - the L6393D's 430 mA sink current and 290 mA source current meet typical IGBT gate requirements for devices up to 50 A/600 V. Its 75/35 ns rise/fall times support switching frequencies ≤800 kHz, and the integrated bootstrap eliminates need for external high-voltage diodes commonly used with IGBT half-bridges.

How does the uncommitted comparator function in overcurrent protection?

The comparator compares CP+ and CP− voltages; when CP+ exceeds CP− by >15 mV (offset), CPOUT pulls low. Used with a shunt resistor on the low-side source, it detects overcurrent within 90–130 ns and can be wired to SD pin to force immediate shutdown - no external op-amp or logic required.

Is L6393D pin-compatible with earlier L6393 variants?

Yes - L6393D (SO-14) shares identical pinout and electrical behavior with L6393 (DIP-14), except DIP-14 was discontinued in Rev 5 (2015). All functional pins, truth table, and timing parameters remain unchanged; only package differs - SO-14 offers better thermal performance and surface-mount compatibility.

L6393D Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Active

Programmable:: Not Verified

Driven Configuration:: Half-Bridge

Channel Type:: Synchronous

Number of Drivers:: 2

Gate Type:: IGBT, N-Channel MOSFET

Voltage - Supply:: 10V ~ 20V

Logic Voltage - VIL, VIH:: 1.1V, 1.9V

Current - Peak Output (Source, Sink):: 290mA, 430mA

Input Type:: Non-Inverting

High Side Voltage - Max (Bootstrap):: 600 V

Rise / Fall Time (Typ):: 75ns, 35ns

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SO

L6393D FAQ

1.How can I place an order for L6393D through Aetrix?

Please submit a Request for Quotation (RFQ) for L6393D on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for L6393D reliable?

The price and inventory of L6393D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L6393D is usually 5 days.

3.What payment methods are accepted for L6393D?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L6393D transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L6393D?

L6393D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L6393D order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for L6393D?

For technical support, including L6393D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L6393D requirements.

6.How does Aetrix verify that L6393D is sourced from the original manufacturer or authorized distributors?

All L6393D products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that L6393D meets industry standards.

7.What is the process for return or replacement of L6393D?

All L6393D units undergo pre-shipment inspection (PSI). If there is an issue with L6393D, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The L6393D part is unused and in its original packaging.

Return procedure for L6393D:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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