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Product Detailed Parameters
- Description：AUTOMOTIVE, 4A/6A 5KVRMS DUAL-CH
- 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)：5ns
- Rise / Fall Time (Typ)：8ns, 8ns
- Current - Output High, Low：4A, 6A
- Current - Peak Output：4A, 6A
- Voltage - Forward (Vf) (Typ)：-
- Voltage - Output Supply：9.2V ~ 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：IEC/EN/DIN, UL, VDE
- Current - DC Forward (If) (Max)：-
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Overview
The UCC21551BQDWKRQ1 is an automotive-grade, dual-channel optically isolated gate driver from Texas Instruments. It features a SOIC-14 package and supports output currents of 4 A and 6 A. The device provides 5000 Vrms reinforced isolation voltage. Operating temperatures range from -40°C to +150°C. Key electrical parameters include a maximum propagation delay of 45 ns, rise time of 8 ns, and fall time of 8 ns. Power dissipation is rated at 950 mW. Input supply voltage ranges from 3 V to 5.5 V, while output voltage spans 13 V to 25 V.
Feature Summary
- Dual-channel optical isolation for robust signal transmission in high-noise environments
- Automotive qualification ensuring reliability under extreme temperature conditions
- Integrated enable and dead-time control pins for precise switching management
Applications
- IGBT gate driving in electric vehicle traction inverters
- SiC MOSFET control in high-power density converters
- Industrial motor drive systems requiring galvanic isolation
Procurement Notes
Verify the specific suffix 'BQ' against official Texas Instruments documentation to confirm exact pinout and functional variants within the UCC21551 family. Ensure compatibility with automotive quality standards required for your application. Cross-reference datasheet revisions to validate parameter consistency before finalizing component selection.
Selection Notes
Select this component when high-voltage isolation and automotive reliability are critical. The dual-channel design simplifies half-bridge configurations. Consider thermal management due to the specified power dissipation rating. Verify input logic compatibility with CMOS or TTL sources as documented in the official specifications.
Part Context
This part belongs to the UCC21551-Q1 series of isolated gate drivers designed for demanding power electronics applications. It complements other TI solutions by offering integrated control features like dead-time generation. The SOIC-14 package facilitates compact PCB layouts for modern inverter designs.
Replacement Considerations
Consult official substitution guides for equivalent parts within the UCC2155x family. Verify pin-to-pin compatibility and isolation voltage ratings before replacing existing components in production designs.
