UCC21750 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments UCC21750 is a 10A single-output isolated gate driver for half-bridge topologies, supporting both inverting and non-inverting inputs in a 16-pin SOIC package. It provides 5.7kV reinforced isolation, 100ns propagation delay, and integrates DESAT protection and active Miller clamp for driving SiC and IGBT power switches. Available in stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- UCC21750 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 10A peak output current with 5.7kV reinforced isolation for driving high-voltage SiC MOSFETs and IGBTs
- 100ns maximum propagation delay enabling precise switching control in high-frequency power converter designs
- Integrated DESAT protection and active Miller clamp preventing shoot-through and cross-conduction in half-bridge stages
- Supports both inverting and non-inverting input logic for flexible half-bridge control signal routing in 16-pin SOIC
Applications
The UCC21750 is designed for isolated gate driving in high-efficiency power conversion systems including solar inverters, EV traction drives, industrial motor drives, and UPS systems where SiC MOSFET or IGBT half-bridge topologies operate at voltages up to 1200V. Its integrated protection features—DESAT detection and active Miller clamp—reduce external component count and improve switching reliability in fast-switching converters operating above 50 kHz. The 5.7kV reinforced isolation rating makes it suitable for systems requiring IEC 60950 or IEC 62368 safety compliance.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UCC21750:
Frequently Asked Questions
For a SiC MOSFET half-bridge in a solar inverter, what peak gate current does UCC21750 provide?
The UCC21750 delivers 10A peak output current, which is sufficient to rapidly charge and discharge the gate capacitance of most 1200V-class SiC MOSFETs used in solar inverters. This high peak current enables fast switching transitions, reducing switching losses and improving inverter efficiency at operating frequencies above 50 kHz.
How does the DESAT protection in UCC21750 prevent damage during overcurrent faults in motor drives?
The DESAT (desaturation) protection in UCC21750 monitors the collector-emitter voltage of the driven IGBT or SiC MOSFET during conduction. If an overcurrent fault causes the device to exit saturation and the voltage exceeds the DESAT threshold, UCC21750 initiates a controlled soft shutdown within microseconds, preventing catastrophic device failure in motor drive and industrial inverter applications.
What isolation rating does UCC21750 carry and which safety standards does it support?
The UCC21750 is rated for 5.7kV reinforced isolation between the input control side and the gate-drive output side. This rating supports compliance with IEC 60950-1, IEC 62368-1, and VDE 0884-11 safety standards, making it suitable for mains-connected power supplies, industrial motor drives, and EV onboard chargers where reinforced insulation is mandated.
Can UCC21750 replace an older isolated gate driver in a design that switches at 100 kHz?
Yes, UCC21750's 100ns maximum propagation delay is well-suited for switching frequencies up to 100 kHz and beyond, as this delay represents less than 1% of a 10 µs switching period. Its active Miller clamp further reduces effective gate drive delays by suppressing Miller-induced gate voltage spikes during high dV/dt switching transitions, enabling reliable operation in high-frequency converter designs.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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