Overview
The UCC21521CDW 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 common-mode transient immunity (CMTI) greater than 100 V/ns. This gate driver is versatile, allowing configuration as two low-side drivers, two high-side drivers, or a half-bridge driver with programmable dead time.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOIC (DW), 16 pins |
| Operating Temperature Range | -40°C to 125°C |
| Peak Source Current | 4 A |
| Peak Sink Current | 6 A |
| Typical Propagation Delay | 19 ns |
| Minimum Pulse Width | 10 ns |
| Maximum Delay Matching | 5 ns |
| Maximum Pulse-Width Distortion | 6 ns |
| Common-Mode Transient Immunity (CMTI) | Greater than 100 V/ns |
| Surge Immunity | Up to 12.8 kV |
| Isolation Barrier Life | >40 years |
| Input VCCI Range | 3 V to 18 V |
| VDD Output Drive Supply | Up to 25 V |
| VDD UVLO Options | 5 V, 8 V, 12 V |
Key Features
- Universal configuration: dual low-side, dual high-side, or half-bridge driver
- TTL and CMOS compatible inputs
- Programmable overlap and dead time
- Rejects input pulses and noise transients shorter than 5 ns
- Fast enable for power sequencing
- Wide body SOIC-16 (DW) package
- Safety-related certifications: 8000-V reinforced isolation per DIN V VDE V 0884-11:2017-01, 5700-V RMS isolation for 1 minute per UL 1577, CSA and CQC certifications
Applications
The UCC21521CDW is suitable for a wide variety of power applications, including but not limited to:
- 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 electric vehicles
Q & A
- What is the UCC21521CDW used for?
The UCC21521CDW is an isolated dual-channel gate driver designed to drive power MOSFETs, IGBTs, and SiC MOSFETs.
- What are the peak current capabilities of the UCC21521CDW?
The device has a 4-A peak source current and a 6-A peak sink current.
- What is the operating temperature range of the UCC21521CDW?
The operating temperature range is -40°C to 125°C.
- What is the typical propagation delay of the UCC21521CDW?
The typical propagation delay is 19 ns.
- Does the UCC21521CDW have any safety certifications?
Yes, it has several safety-related certifications including 8000-V reinforced isolation and CSA and CQC certifications.
- What are the VDD UVLO options for the UCC21521CDW?
The VDD UVLO options are 5 V, 8 V, and 12 V.
- Can the UCC21521CDW be configured in different driver modes?
Yes, it can be configured as two low-side drivers, two high-side drivers, or a half-bridge driver.
- What is the maximum VDD output drive supply voltage for the UCC21521CDW?
The maximum VDD output drive supply voltage is up to 25 V.
- Does the UCC21521CDW have fast enable for power sequencing?
Yes, it has fast enable for power sequencing.
- What is the common-mode transient immunity (CMTI) of the UCC21521CDW?
The CMTI is greater than 100 V/ns.
