Overview
The UCC21750DWR from Texas Instruments is a galvanic isolated single-channel gate driver designed for driving 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. It utilizes SiO2 capacitive isolation technology, ensuring high isolation voltage and long isolation barrier life. The UCC21750DWR is packaged in a SOIC-16 DW package, providing a compact solution for various high-voltage applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC (Input Power Supply) | 3.0 | - | 5.5 | V |
| VDD (Positive Supply Rail) | 13 | - | 33 | V |
| VEE (Negative Supply Rail) | -17.5 | - | 0.3 | V |
| Drive Strength | ±10 | - | - | A |
| CMTI (Common Mode Transient Immunity) | 150 | - | - | V/ns |
| Propagation Delay | - | - | 130 | ns |
| Pulse/Part Skew | - | - | 30 | ns |
| Operating Junction Temperature | -40 | - | 150 | °C |
| Isolation Voltage (RMS) | - | - | 1.5 kV | - |
| Surge Immunity | - | - | 12.8 kV PK | - |
Key Features
- 5.7-kVRMS single-channel isolated gate driver
- Supports SiC MOSFETs and IGBTs up to 2121-V DC operating voltage
- 33-V maximum output drive voltage (VDD – VEE)
- ±10-A drive strength and split output
- 150-V/ns minimum CMTI
- 200-ns response time fast DESAT protection
- 4-A Internal active miller clamp
- 400-mA soft turn-off when fault happens
- Isolated analog sensor with PWM output for temperature sensing with NTC, PTC, or thermal diode, and high voltage DC-link or phase voltage
- 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
- SOIC-16 DW package with creepage and clearance distance > 8 mm
- 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 operating voltage for the UCC21750DWR?
The UCC21750DWR supports SiC MOSFETs and IGBTs up to 2121-V DC operating voltage.
- What is the drive strength of the UCC21750DWR?
The UCC21750DWR has a drive strength of ±10-A peak source and sink current.
- What is the common mode transient immunity (CMTI) of the UCC21750DWR?
The CMTI is at least 150 V/ns.
- What protection features does the UCC21750DWR include?
The device includes fast overcurrent and short circuit detection, shunt current sensing support, fault reporting, active miller clamp, and input and output side power supply UVLO.
- How does the isolated analog sensor work in the UCC21750DWR?
The isolated analog sensor provides PWM output for temperature sensing with NTC, PTC, or thermal diode, and for high voltage DC-link or phase voltage sensing.
- What is the package type and dimensions of the UCC21750DWR?
The UCC21750DWR is packaged in a SOIC-16 DW package with dimensions of 10.3 mm × 7.5 mm.
- What are the safety certifications for the UCC21750DWR?
The device has safety-related certifications including reinforced insulation per DIN EN IEC 60747-17 (VDE 0884-17) and UL 1577 component recognition program.
- What is the operating junction temperature range for the UCC21750DWR?
The operating junction temperature range is from –40°C to 150°C.
- How does the DESAT protection work in the UCC21750DWR?
The DESAT protection has a 200-ns response time for fast desaturation current protection.
- What is the purpose of the RST/EN pin in the UCC21750DWR?
The RST/EN pin is used for fast enable and disable response, and for resetting the fault condition signaled on the FLT pin.
