Overview
The UCC21750DW, produced by Texas Instruments, is a galvanically isolated single-channel gate driver designed for Silicon Carbide (SiC) MOSFETs and Insulated Gate Bipolar Transistors (IGBTs) up to 2121-V DC operating voltage. This device features advanced protection mechanisms, best-in-class dynamic performance, and robustness. The UCC21750DW utilizes SiO2 capacitive isolation technology, supporting up to 1.5-kV RMS working voltage and 12.8-kV PK surge immunity, with an isolation barrier life exceeding 40 years. It offers low part-to-part skew and high common mode noise immunity (CMTI) of more than 150-V/ns.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Output Drive Voltage (VDD – VEE) | - | - | 33 | V |
| Drive Strength | - | - | ±10 A | A |
| Common Mode Transient Immunity (CMTI) | 150 | - | - | V/ns |
| Response Time for DESAT Protection | - | - | 200 ns | ns |
| Internal Active Miller Clamp | - | - | 4 A | A |
| Soft Turn-off Current when Fault Happens | - | - | 400 mA | mA |
| Operating Junction Temperature | -40 | - | 150 | °C |
| Package Type | - | - | SOIC-16 DW | - |
| Creepage and Clearance Distance | - | - | > 8 mm | mm |
Key Features
- 5.7-kV RMS single-channel isolated gate driver
- Support for SiC MOSFETs and IGBTs up to 2121-V DC operating voltage
- ±10-A drive strength and split output
- Fast overcurrent and short circuit detection
- Shunt current sensing support and fault reporting
- Active Miller clamp and input/output side power supply UVLO
- Isolated analog sensor with PWM output for temperature or voltage sensing
- Alarm FLT on overcurrent and reset from RST/EN
- Fast enable and disable response on RST/EN
- Reject < 40-ns noise transient and pulse on input pins
- 12-V VDD UVLO with power good on RDY
- Inputs/outputs with over/under-shoot transient voltage immunity up to 5 V
- 130-ns (maximum) propagation delay and 30-ns (maximum) pulse/part skew
- Safety-related certifications: Reinforced insulation per DIN EN IEC 60747-17 (VDE 0884-17) and UL 1577 component recognition program
Applications
- Industrial motor drives
- Server, telecom, and industrial power supplies
- Uninterruptible power supplies (UPS)
- Solar inverters
Q & A
- What is the maximum output drive voltage of the UCC21750DW?
The maximum output drive voltage is 33 V (VDD – VEE).
- What is the drive strength of the UCC21750DW?
The drive strength is ±10 A.
- What is the common mode transient immunity (CMTI) of the UCC21750DW?
The CMTI is greater than 150 V/ns.
- What is the response time for DESAT protection in the UCC21750DW?
The response time for DESAT protection is 200 ns.
- What is the internal active Miller clamp current of the UCC21750DW?
The internal active Miller clamp current is 4 A.
- What is the soft turn-off current when a fault happens in the UCC21750DW?
The soft turn-off current when a fault happens is 400 mA.
- What is the operating junction temperature range of the UCC21750DW?
The operating junction temperature range is –40°C to 150°C.
- What package type is the UCC21750DW available in?
The UCC21750DW is available in the SOIC-16 DW package.
- What are the safety-related certifications for the UCC21750DW?
The UCC21750DW has reinforced insulation per DIN EN IEC 60747-17 (VDE 0884-17) and UL 1577 component recognition program.
- What are some typical applications of the UCC21750DW?
Typical applications include industrial motor drives, server and telecom power supplies, uninterruptible power supplies (UPS), and solar inverters.
- How does the UCC21750DW handle overcurrent and fault conditions?
The UCC21750DW features fast overcurrent and short circuit detection, fault reporting, and reset from the RST/EN pin.
