Overview
The UCC21521CDWR is an isolated dual-channel gate driver produced by Texas Instruments. It is designed to drive power MOSFETs, IGBTs, and SiC MOSFETs up to 5-MHz with best-in-class propagation delay and pulse-width distortion. The device features a 5.7-kV RMS reinforced isolation barrier, ensuring high isolation and reliability. It is versatile, allowing configuration as two low-side drivers, two high-side drivers, or a half-bridge driver with programmable dead time. The UCC21521CDWR is suitable for a wide range of power applications due to its high efficiency, high power density, and robust design.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOIC-16 (DW) |
| Operating Temperature Range | -40°C to 125°C |
| Peak Output Current | 4-A source, 6-A sink |
| Isolation Rating | 5700-V RMS, 8000-V PK reinforced isolation |
| Propagation Delay | 19-ns typical, 30-ns maximum |
| Pulse Width Distortion | 6-ns maximum |
| Common Mode Transient Immunity (CMTI) | Greater than 100 V/ns |
| Input VCCI Range | 3-V to 18-V |
| Output VDD Supply | Up to 25-V |
| UVLO Options | 5-V, 8-V, 12-V |
Key Features
- Universal configuration: dual low-side, dual high-side, or half-bridge driver
- High isolation: 5.7-kV RMS reinforced isolation barrier
- Fast switching parameters: 19-ns typical propagation delay, 10-ns minimum pulse width
- High common-mode transient immunity (CMTI) greater than 100 V/ns
- Surge immunity up to 12.8 kV
- TTL and CMOS compatible inputs
- Programmable overlap and dead time
- Fast enable for power sequencing
- Wide input VCCI range from 3 V to 18 V
- UVLO protection on supply voltage pins
- Safety-related certifications: CSA, CQC, UL, and more
Applications
The UCC21521CDWR is suitable for a variety of power applications, including:
- Power supplies and DC-DC converters
- Motor drives and control systems
- Renewable energy systems (e.g., solar and wind power)
- Industrial automation and control systems
- Electric vehicles and hybrid vehicles
- High-power density and high-efficiency power systems
Q & A
- What is the UCC21521CDWR used for?
The UCC21521CDWR is an isolated dual-channel gate driver designed to drive power MOSFETs, IGBTs, and SiC MOSFETs in various power applications.
- What are the key configurations of the UCC21521CDWR?
The device 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 rating of the UCC21521CDWR?
The device features a 5.7-kV RMS reinforced isolation barrier and 8000-V PK transient overvoltage rating.
- What are the propagation delay and pulse-width distortion of the UCC21521CDWR?
The typical propagation delay is 19 ns, and the maximum pulse-width distortion is 6 ns.
- What is the common-mode transient immunity (CMTI) of the UCC21521CDWR?
The CMTI is greater than 100 V/ns.
- What is the input VCCI range of the UCC21521CDWR?
The input VCCI range is from 3 V to 18 V.
- What are the UVLO options for the UCC21521CDWR?
The UVLO options are 5 V, 8 V, and 12 V.
- Is the UCC21521CDWR RoHS compliant?
Yes, the UCC21521CDWR is RoHS compliant.
- What safety certifications does the UCC21521CDWR have?
The device has certifications from CSA, CQC, UL, and others, adhering to various international standards.
- What is the operating temperature range of the UCC21521CDWR?
The operating temperature range is from -40°C to 125°C.
- How does the enable function work on the UCC21521CDWR?
The EN pin pulled low shuts down both outputs simultaneously, and normal operation is resumed when the pin is left open or pulled high.
