4-A, 6-A, 3.0-kVrms Isolated Dual-Channel Gate Driver with Dead Time
The UCC21222 from Texas Instruments is an isolated dual channel gate driver with programmable dead time. It is designed with 4-A peak-source and 6-A peak-sink current to drive power MOSFET, IGBT, and GaN transistors.
Applications are expected to include: isolated converters in ac-dc and dc-dc power supplies; server, telecom, IT and industrial infrastructures; motor drives and solar inverters; HEV and EV battery chargers; industrial transportation; and uninterruptible power supplies.
The UCC21222 can be configured as two low-side drivers, two high-side drivers, or a half-bridge driver. 5ns delay matching performance allows two outputs to be paralleled, doubling the drive strength for heavy load conditions without risk of internal shoot-through.
The input side is isolated from the two output drivers by a 3.0-kVrms isolation barrier, with a minimum of 100-V/ns common-mode transient immunity (CMTI).
Resistor programmable dead time gives the capability to adjust dead time for system constraints to improve efficiency and prevent output overlap. Other protection features include: Disable feature to shut down both outputs simultaneously when DIS is set high, integrated deglitch filter that rejects input transients shorter than 5-ns, and negative voltage handling for up to -2-V spikes for 200-ns on input and output pins. All supplies have UVLO protection.
Features include:
- Resistor-Programmable Dead Time
- Universal: Dual Low-Side, Dual High-Side or Half-Bridge Driver
- 4-A Peak Source, 6-A Peak Sink Output
- 3-V to 5.5-V Input VCCI Range
- Up to 18-V VDD Output Drive Supply
- 8-V VDD UVLO
- Switching Parameters:
- 28-ns Typical Propagation Delay
- 10-ns Minimum Pulse Width
- 5-ns Maximum Delay Matching
- 5-ns Maximum Pulse-Width Distortion
- TTL and CMOS Compatible Inputs
- Integrated Deglitch Filter
- I/Os withstand -2-V for 200ns
- Common-Mode Transient Immunity (CMTI) Greater than 100-V/ns
- Isolation Barrier Life >40 Years
- Surge Immunity up to 7800-VPK
- Narrow Body SOIC-16 (D) Package
- Safety-Related Certifications (Planned):
- 4242-VPK Isolation per DIN V VDE V 0884-11:2017-01 and DIN EN 61010-1
- 3000-Vrms Isolation for 1 Minute per UL 1577
- CSA Certification per IEC 60950-1, IEC 62368-1 and IEC 61010-1 End Equipment Standards
- CQC Certification per GB4943.1-2011
- Create a Custom Design Using the UCC21222 With the WEBENCH® Power Designer