Texas Instruments introduces several new isolated gate drivers

Texas Instruments (TI) introduces several new isolated gate drivers. Not only do they provide excellent monitoring capabilities, they also provide a strong protective barrier for high-pressure systems. UCC21710-Q1, UCC21732-Q1 and UCC21750 help designers develop smaller, more efficient and superior performance traction inverters, on-board chargers, solar inverters and motor drive designs.

These devices are TI's first to provide integrated sensing capabilities for insulated gate bipolar transistors (IGBTs) and silicon carbide (SiC) metal-oxide-semiconductor field-effect transistors (MOSFETs), greatly simplify design and achieve higher application system reliability with operating voltages up to 1.5KVRMS. With integrated components, they enable rapid detection, provide effective protection against overcurrent events, and ensure a safe system shutdown.

The UCC21710-Q1, UCC21732-Q1, and UCC21750 utilize capacitive isolation technology to build a long isolation barrier lifetime while providing high enhanced isolation voltage, fast data transfer, and high-density packaging.

"System robustness is increasingly a challenge for high-voltage motor drive and power output applications," said Steve Lambouses, vice president of TI's high-voltage Power unit. "These new gate drivers use TI's advanced isolation technology combined with other features and support, allowing engineers to move more quickly into the production phase of reliable systems. And can reduce the size and cost of the system to a much lower level."

Key features and benefits of UCC21710-Q1, UCC21732-Q1 and UCC21750 products:

● Enhanced system performance: The novel isolated gate driver has A peak drive strength of ±10 A, which allows for maximum switching behavior, not only cutting costs, but also the 200 ns overcurrent protection enables quick system protection.

● Enhanced system-level reliability: The UCC217xx series extends the service life of isolation barriers with capacitive isolation technology and industry-leading enhanced isolation voltage and surge immunity up to 12.8 kV. In addition, these devices ensure accurate data communication with common mode transient suppression (CMTI) capability of more than 150 V/ns.

● Reduced system size: These gate drivers eliminate the need for external components by integrating buffers and sensors, and provide accurate temperature, current, or voltage sensing via isolated analog signals to PWM (pulse width modulation) signal sensors, greatly simplifying system-level diagnostics and preventing switch failure design.

Advanced power level system performance and reliability

In addition, TI announced the UCC23513, a photoelectric compatible gate driver with a drive strength of 3A and an enhanced safety isolation voltage of 5KVRMS, for industrial application designers who need improved anti-jamming and a wider operating temperature range. This new gate driver is designed to maximize system performance and reliability for motor drives, solar inverters and power supplies. It is available from -40º C to +150º C's wide junction temperature range and CMTI in excess of 100 V/ns enable designers to achieve performance levels that are not possible with traditional optocouplers. With the UCC23513's pin-to-pin compatibility with optically isolated gate drivers and off-the-shelf design resources, including a three-phase inverter reference design based on an opto-analog input gate driver for 200-480 VAC drives, designers can significantly reduce time to market.