Overview
The UCC21540DWR from Texas Instruments is an isolated dual-channel gate driver designed to drive power MOSFET, IGBT, and GaN transistors. This device is part of the UCC2154x family and is available in a 16-pin SOIC package. It features up to 4A peak source and 6A peak sink output currents, making it suitable for high-power applications. The UCC21540DWR offers reinforced isolation with a 5.7kVrms isolation barrier and a common-mode transient immunity (CMTI) greater than 125V/ns. This gate driver is configurable as two low-side drivers, two high-side drivers, or a half-bridge driver, providing flexibility in various power supply and motor drive configurations.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Peak Output Source Current | 4 | - | - | A |
| Peak Output Sink Current | 6 | - | - | A |
| Driver Bias Supply (VDDA-VSSA, VDDB-VSSB) | -0.3 | - | 30 | V |
| Output Signal Voltage (OUTA to VSSA, OUTB to VSSB) | -0.3 | - | VDDA+0.3, VDDB+0.3 | V |
| Propagation Delay (tPDHL, tPDLH) | 26 | 33 | 45 | ns |
| Pulse Width Distortion (tPWD) | - | - | 6 | ns |
| Isolation Voltage (Vrms) | - | - | 5700 | Vrms |
| Common-Mode Transient Immunity (CMTI) | - | - | 125 | V/ns |
Key Features
- Wide body package options (DW SOIC-16 and DWK SOIC-14 with 3.3mm channel-to-channel spacing)
- Up to 4A peak source and 6A peak sink output currents
- Up to 18V VDD output drive supply with 5V and 8V VDD UVLO options
- TTL and CMOS compatible inputs
- Resistor-programmable dead time and disable feature to shut down both outputs simultaneously
- Negative voltage handling for up to –5-V spikes for 50 ns on input pins
- Safety-related certifications including reinforced isolation per DIN EN IEC 60747-17, 5700VRMS isolation for 1 minute per UL 1577, and CQC certification per GB4943.1-2022
Applications
- Isolated AC-to-DC and DC-to-DC power supplies
- Server, telecom, IT, and industrial infrastructures
- Motor drives and solar inverters
- Industrial transportation systems
Q & A
- What is the peak output current of the UCC21540DWR?
The UCC21540DWR has a peak output source current of up to 4A and a peak output sink current of up to 6A.
- What is the isolation voltage rating of the UCC21540DWR?
The UCC21540DWR has a 5700VRMS isolation voltage rating.
- What are the package options available for the UCC21540DWR?
The UCC21540DWR is available in DW SOIC-16 and DWK SOIC-14 packages with 3.3mm channel-to-channel spacing.
- What are the safety certifications for the UCC21540DWR?
The UCC21540DWR has safety-related certifications including reinforced isolation per DIN EN IEC 60747-17, 5700VRMS isolation for 1 minute per UL 1577, and CQC certification per GB4943.1-2022.
- What is the common-mode transient immunity (CMTI) of the UCC21540DWR?
The CMTI of the UCC21540DWR is greater than 125V/ns.
- Can the UCC21540DWR handle negative voltage spikes?
Yes, the UCC21540DWR can handle negative voltage spikes of up to –5-V for 50 ns on input pins.
- What are the typical propagation delays for the UCC21540DWR?
The typical propagation delays (tPDHL, tPDLH) are around 33 ns.
- Is the UCC21540DWR compatible with TTL and CMOS inputs?
Yes, the UCC21540DWR is compatible with both TTL and CMOS inputs.
- What is the purpose of the resistor-programmable dead time feature?
The resistor-programmable dead time feature allows for adjustable dead time to prevent cross-conduction in half-bridge configurations.
- What are some common applications for the UCC21540DWR?
The UCC21540DWR is commonly used in isolated AC-to-DC and DC-to-DC power supplies, server and telecom infrastructure, motor drives, solar inverters, and industrial transportation systems.
