UCC21755-Q1 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UCC21755-Q1 is an AEC-Q100-qualified, reinforced isolated single-channel gate driver delivering ±10 A peak current for SiC MOSFETs and IGBTs, with integrated active protection, isolated analog sensing, and >100 V/ns CMTI, housed in a wide-body SOIC package.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- UCC21755-Q1 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- ±10 A source/sink peak gate drive current with reinforced isolation rating enables direct drive of high-power SiC MOSFETs and IGBTs in traction inverter stages
- Integrated isolated analog sensing channel feeds back DC-bus voltage or temperature across the isolation barrier without a separate isolated ADC
- >100 V/ns common-mode transient immunity (CMTI) suppresses switching-node noise in 800 V automotive inverter half-bridge designs
Applications
The UCC21755-Q1 is designed for automotive traction inverters, on-board chargers (OBC), and DC-DC converters in electric and hybrid vehicles requiring AEC-Q100-grade gate driving of SiC or IGBT power stages at 400 V to 800 V bus voltages. Its active protection functions including desaturation detection and soft turn-off guard against short-circuit events in 3-phase motor drive systems operating over -40°C to +125°C ambient temperature.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UCC21755-Q1:
Frequently Asked Questions
How does the isolated analog sensing channel in UCC21755-Q1 simplify a SiC inverter feedback design?
The UCC21755-Q1 integrates an isolated analog feedback path alongside the gate drive channel, allowing the high-side DC-link voltage or NTC temperature signal to be transmitted across the reinforced isolation barrier to the controller without a separate isolated delta-sigma ADC or optocoupler-based analog link. This reduces BOM by 3 to 5 components per phase leg and eliminates the associated isolation-barrier routing complexity.
Why is >100 V/ns CMTI critical for UCC21755-Q1 in an 800 V automotive traction inverter?
In an 800 V bus half-bridge, the switching node can slew at 50 V/ns to 150 V/ns during SiC turn-on transients. A gate driver with insufficient CMTI couples this transient as a spurious signal that can inadvertently turn on or off the complementary switch, causing shoot-through. UCC21755-Q1's >100 V/ns CMTI rating ensures the reinforced isolation barrier blocks these transients, preventing false switching events and protecting the power stage.
What AEC-Q100 qualification grade applies to UCC21755-Q1, and what temperature range does it cover?
The UCC21755-Q1 is qualified to AEC-Q100 Grade 1, covering an ambient operating temperature range of -40°C to +125°C. This grade is required for powertrain-class components in passenger vehicles, ensuring the gate driver meets automotive reliability screening including HTOL, ESD HBM ±2 kV, and thermal cycling tests mandated by Tier-1 automotive supply chains.
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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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