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Product Detailed Parameters
- Description：UCC21551CQDWKRQ1
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Technology：Capacitive Coupling
- Number of Channels：2
- Voltage - Isolation：5000Vrms
- Propagation Delay tpLH / tpHL (Max)：45ns, 45ns
- Pulse Width Distortion (Max)：6ns
- Rise / Fall Time (Typ)：8ns, 8ns
- Current - Output High, Low：4A, 6A
- Current - Peak Output：4A, 6A
- Voltage - Forward (Vf) (Typ)：-
- Voltage - Output Supply：13.5V ~ 25V
- Grade：Automotive
- Qualification：AEC-Q100
- Operating Temperature：-40°C ~ 150°C
- Mounting Type：Surface Mount
- Package / Case：14-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：14-SOIC
- Common Mode Transient Immunity (Min)：125V/ns
- Approval Agency：CQC, CSA, UL, VDE
- Current - DC Forward (If) (Max)：-
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Overview
The UCC21551CQDWKRQ1 is an automotive-grade, dual-channel optically isolated gate driver from Texas Instruments. It features a SOIC-14 package and supports dual low-side, dual high-side, or half-bridge configurations. The device provides 5000 VRMS reinforced isolation and operates within a junction temperature range of -40°C to +150°C. Key electrical parameters include a maximum propagation delay of 45 ns, rise/fall times of 8 ns, and peak output currents of 4 A and 6 A. It accepts CMOS/TTL logic inputs and delivers output voltages between 13 V and 25 V.
Feature Summary
- Optical isolation technology providing robust signal transmission across the isolation barrier
- AEC-Q100 qualified for Grade 1 automotive applications ensuring reliability in harsh environments
- Flexible configuration support for dual low-side, dual high-side, and half-bridge topologies
Applications
- Automotive powertrain systems requiring galvanic isolation
- High-density motor drive inverters
- On-board charger (OBC) and DC-DC converter circuits
Procurement Notes
Verify the specific suffix 'CQ' against official Texas Instruments documentation to confirm it denotes the correct tape-and-reel packaging and quality grade. Ensure the component matches the required automotive qualification standards for your specific application environment before finalizing procurement.
Selection Notes
Select this component when optical isolation is preferred over capacitive methods for specific noise immunity requirements. Confirm that the 5000 VRMS rating meets the system's isolation voltage needs. Verify compatibility with the target logic family and ensure the thermal management design accommodates the specified operating temperature range.
Part Context
This part belongs to the UCC21551x-Q1 series of automotive isolated gate drivers. It is designed to replace legacy optocoupler-based solutions by offering higher speed and better performance in a compact form factor. The series is intended for demanding automotive power electronics where reliability and efficiency are critical.
Replacement Considerations
Check for direct cross-reference candidates within the UCC21551 family. Verify pinout compatibility and isolation voltage ratings when substituting with other TI isolated gate drivers.
