会社ブログについて Mingjiada Electronics Supply ST L6390 600V High Voltage High/ Low-Side Half-Bridge Gate Driver

Mingjiada Electronics Supply ST L6390 600V High Voltage High/ Low-Side Half-Bridge Gate Driver

In motor drives, inverters, industrial power supplies and power conversion systems, gate drivers play a crucial role in converting control signals into drive signals for power switching devices. High-voltage high-side/low-side gate drivers have attracted attention due to their ability to drive both high-side and low-side power devices simultaneously, thereby simplifying bridge circuit design. Mingjiada Electronics has long been a supplier of the [ST] L6390 high-voltage high-side/low-side gate driver, offering both sample procurement and bulk supply.

Product Overview
The L6390 is a high-voltage high-side/low-side gate driver launched by ST (STMicroelectronics), primarily used to drive power switching devices such as power MOSFETs or IGBTs. This device integrates high-side and low-side drive channels, making it suitable for gate drive designs in power topologies such as half-bridge, full-bridge and three-phase inverters. Its high-voltage level conversion, input compatibility and protection functions help to simplify power stage circuits and enhance system reliability.

Key Specifications of the L6390:
High-side voltage rating: up to 600V
Drive configuration: half-bridge, 2 independent channels
Output current: 290 mA (sink) / 430 mA (source)
Rise/fall time: 75 ns / 35 ns
Propagation delay: 125 ns (tpLH / tpHL)
Supply voltage VCC: 12.5 V – 20 V
Switching frequency: up to approximately 800 kHz
Operating junction temperature: –40°C to +125°C
Package: 16-SO (SO-16)

Device Positioning and Key Technical Characteristics
The L6390 series, manufactured using ST’s BCD™ “offline” process, is a fully-featured single-chip half-bridge gate driver, with the high-side (floating) section capable of operating on a voltage rail of up to 600V.
Key features of the L6390 include:
Drive capability: 290 mA source current and 430 mA sink current at the output stage; typical switching times of 75 ns rise and 35 ns fall with a 1 nF load, helping to reduce switching losses and EMI.
Logic interface compatibility: 3.3V and 5V TTL/CMOS inputs (with hysteresis), enabling direct interfacing with mainstream control MCUs; matched high- and low-side propagation delays (typically 125 ns) prevent cycle distortion and support switching frequencies of up to approximately 800 kHz.
Integrated bootstrap diode: Eliminates the need for an external bootstrap diode, simplifying layout and reducing BOM costs.
Dead-time and interlocking: The external DT pin can be used to set the dead-time; this, combined with internal interlocking logic, prevents shoot-through between the high-side and low-side devices.
Dual UVLO: Both high-side and low-side drive channels feature built-in under-voltage lockout (UVLO), preventing the power transistors from operating in inefficient or hazardous regions when the supply voltage is insufficient.
On-chip operational amplifier + comparator: The integrated operational amplifier can be used for current sensing in field-oriented control (FOC) or sensorless back-EMF (BEMF) detection; the comparator, in conjunction with smartSD (smart shutdown), enables rapid protection against faults such as overcurrent and overtemperature.
Immunity: dV/dt immunity of up to ±50 V/ns across the full temperature range

Typical applications for the L6390:
Motor drives: DC, AC, permanent magnet DC (PMDC) and permanent magnet AC (PMAC) motors; FOC and sensorless BEMF detection systems;
Industrial applications and drives, factory automation, HVAC (heating, ventilation and air conditioning);
Household appliances, induction heating;
Power supply systems: server power supplies, telecommunications power supplies, UPS, solar inverters, charging station power modules, etc.

Supply Information
Shenzhen Mingjiada Electronics Co., Ltd. — a long-standing distributor of the ST product range — maintains a constant stock of the L6390 series temperature monitors (including models such as L6390D and L6390DTR), and supports both sample procurement and bulk supply. To confirm specific part numbers, stock levels and real-time prices, please visit the Mingjiada Electronics website (https://www.integrated-ic.com/) for further supply details.
Tags: L6390DTR, L6390DT, L6390D, L6390