Overview
The UCC21520ADW is an isolated dual-channel gate driver produced by Texas Instruments. It is designed to drive power MOSFETs, IGBTs, and SiC MOSFETs up to 5MHz. The device features a 4A source and 6A sink peak current, making it suitable for high-power applications. The input side is isolated from the two output drivers by a 5.7kVRMS reinforced isolation barrier, ensuring high common-mode transient immunity (CMTI) greater than 125V/ns and surge immunity up to 10kV. This isolation allows for a working voltage of up to 1500VDC between the secondary-side drivers.
Key Specifications
| Parameter | Value |
|---|---|
| Peak Source Current | 4A |
| Peak Sink Current | 6A |
| Propagation Delay | 33ns (typical) |
| Minimum Pulse Width | 20ns |
| Pulse-Width Distortion | 6ns (maximum) |
| Common-Mode Transient Immunity (CMTI) | >125V/ns |
| Surge Immunity | Up to 10kV |
| Input VCCI Range | 3V to 18V |
| VDD Output Drive Supply | Up to 25V |
| VDD UVLO Options | 5V and 8V |
| Operating Temperature Range | -40°C to 125°C |
| Junction Temperature Range | -40°C to 150°C |
| Package Type | SOIC (DW), 16 pins |
Key Features
- Isolated dual-channel gate driver with 4A source and 6A sink peak current.
- Designed to drive power MOSFETs, IGBTs, and SiC MOSFETs up to 5MHz.
- 5.7kVRMS reinforced isolation barrier with CMTI greater than 125V/ns and surge immunity up to 10kV.
- Programmable overlap and dead time.
- Fast disable for power sequencing.
- Wide input VCCI range from 3V to 18V to interface with both analog and digital controllers.
- VDD supply voltages up to 25V with UVLO protection.
- Safety-related certifications planned, including 8000VPK reinforced isolation and CQC certification.
Applications
The UCC21520ADW is suitable for a wide variety of high-power applications, including:
- Industrial power supplies and motor drives.
- Renewable energy systems such as solar and wind power.
- Automotive systems, including electric vehicles and hybrid vehicles.
- High-power DC-DC converters and inverters.
- Medical equipment requiring high isolation and reliability.
Q & A
- What is the peak current capability of the UCC21520ADW?
The UCC21520ADW has a peak source current of 4A and a peak sink current of 6A.
- What is the maximum operating frequency of the UCC21520ADW?
The device can drive power MOSFETs, IGBTs, and SiC MOSFETs up to 5MHz.
- What is the common-mode transient immunity (CMTI) of the UCC21520ADW?
The CMTI is greater than 125V/ns.
- What are the VDD UVLO options for the UCC21520ADW?
The VDD UVLO options are 5V and 8V.
- Can the UCC21520ADW be configured as different types of drivers?
Yes, it can be configured as two low-side drivers, two high-side drivers, or a half-bridge driver with programmable dead time.
- What is the isolation voltage between the input and output sides of the UCC21520ADW?
The isolation voltage is 5.7kVRMS.
- What safety-related certifications are planned for the UCC21520ADW?
Planned certifications include 8000VPK reinforced isolation per DIN EN IEC 60747-17 and CQC certification per GB4943.1-2022.
- What is the operating temperature range of the UCC21520ADW?
The operating temperature range is -40°C to 125°C.
- What is the junction temperature range of the UCC21520ADW?
The junction temperature range is -40°C to 150°C.
- What package type is the UCC21520ADW available in?
The device is available in a SOIC (DW) package with 16 pins.
