Overview
The UCC21520DW 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) and surge immunity up to 10kV.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 16-SOIC (DW) |
| Pins | 16 |
| Operating Temperature Range (°C) | -40 to 125 |
| Junction Temperature Range (°C) | -40 to +150 |
| Peak Source Current (A) | 4 |
| Peak Sink Current (A) | 6 |
| Typical Propagation Delay (ns) | 33 |
| Minimum Pulse Width (ns) | 20 |
| Maximum Pulse-Width Distortion (ns) | 6 |
| Common-Mode Transient Immunity (V/ns) | >125 |
| Surge Immunity (kV) | Up to 10 |
| Input VCCI Range (V) | 3 to 18 |
| VDD Output Drive Supply (V) | Up to 25 |
| VDD UVLO Options (V) | 5, 8 |
| Isolation Voltage (kVRMS) | 5.7 |
Key Features
- Programmable overlap and dead time
- Fast disable for power sequencing
- Safety-related certifications: 8000VPK reinforced isolation per DIN EN IEC 60747-17, 5.7kVRMS isolation for 1 minute per UL 1577, CQC certification per GB4943.1-2022
- Internal functional isolation between the two secondary-side drivers allows a working voltage of up to 1500VDC
- Each driver can be configured as two low-side drivers, two high-side drivers, or a half-bridge driver
- Wide input VCCI range from 3V to 18V to interface with both analog and digital controllers
- All supply voltage pins have under voltage lock-out (UVLO) protection
Applications
The UCC21520DW is suitable for a wide variety of power applications, including but not limited to:
- Power MOSFET, IGBT, and SiC MOSFET drivers
- High-power density and high-efficiency systems
- Industrial power supplies and motor drives
- Renewable energy systems such as solar and wind power
- Electric vehicle charging and power conversion systems
Q & A
- What is the peak current capability of the UCC21520DW?
The UCC21520DW has a peak source current of 4A and a peak sink current of 6A. - What is the operating temperature range of the UCC21520DW?
The operating temperature range is -40°C to 125°C. - What is the typical propagation delay of the UCC21520DW?
The typical propagation delay is 33ns. - What is the common-mode transient immunity (CMTI) of the UCC21520DW?
The CMTI is greater than 125V/ns. - Can the UCC21520DW 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 are the VDD UVLO options for the UCC21520DW?
The VDD UVLO options are 5V and 8V. - What is the isolation voltage of the UCC21520DW?
The isolation voltage is 5.7kVRMS. - Does the UCC21520DW have under voltage lock-out (UVLO) protection?
Yes, all supply voltage pins have UVLO protection. - What safety-related certifications does the UCC21520DW have?
The device has planned certifications for 8000VPK reinforced isolation per DIN EN IEC 60747-17, 5.7kVRMS isolation for 1 minute per UL 1577, and CQC certification per GB4943.1-2022. - What is the maximum working voltage between the secondary-side drivers?
The maximum working voltage is up to 1500VDC.
