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Product Detailed Parameters
- Description：ISOLATED GATE DRIVER
- 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：19V ~ 25V
- Grade：-
- Qualification：-
- 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 UCC21551DDWKR is an automotive-grade, optically isolated dual-channel gate driver from Texas Instruments. It features a peak source current of 4A and a peak sink current of 6A. The device provides 5k VRMS insulation voltage and operates within a junction temperature range of -40°C to +150°C. Key electrical parameters include a maximum propagation delay of 45 ns, with rise and fall times of 8 ns each. It supports output voltages from 13 V to 25 V and has a maximum power dissipation of 950 mW. The component is housed in a 14-pin SOIC package.
Feature Summary
- Optical isolation technology for high-voltage noise immunity
- Automotive qualification ensuring reliability under harsh conditions
- Dual-channel configuration supporting versatile topologies
Applications
- Automotive motor control systems
- High-side and low-side switching applications
- Half-bridge driver circuits
Procurement Notes
Verify the specific suffix 'Q' for AEC-Q100 automotive qualification status when sourcing. Confirm the package type matches the required PCB footprint. Ensure compatibility with input logic levels. Check for moisture sensitivity handling requirements during storage and assembly. Validate that the supplier provides original manufacturer documentation.
Selection Notes
Select this component for designs requiring robust optical isolation in automotive environments. Consider the 4A/6A drive strength for driving medium-power MOSFETs or IGBTs. Evaluate the wide operating temperature range for extreme climate applications. Compare against capacitive isolation alternatives if size constraints are critical.
Part Context
This part belongs to the UCC21551x family of isolated gate drivers. It is designed as a universal driver suitable for various bridge configurations. The family emphasizes high reliability and performance in demanding power electronics applications.
Replacement Considerations
Check for direct substitutes within the UCC21551 series. Verify pinout compatibility before replacing with similar models. Ensure equivalent isolation voltage ratings are maintained.
