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Product Detailed Parameters
- Description：4-A, 6-A 5-KVRMS DUAL-CHANNEL IS
- 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：-
- 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：IEC/EN/DIN, UL, VDE
- Current - DC Forward (If) (Max)：-
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Overview
The UCC21551CDWKR is a dual-channel reinforced isolated gate driver from Texas Instruments, housed in a 14-pin SOIC package. It delivers a peak source current of 4 A and a peak sink current of 6 A. The device supports an output voltage range of 13 V to 25 V and features a maximum propagation delay of 45 ns. It operates within a junction temperature range of -40°C to +150°C with a power dissipation of 950 mW. The isolation rating is 5 kVRMS.
Feature Summary
- Dual-channel configuration supporting universal low-side, high-side, or half-bridge topologies
- Reinforced optical isolation for robust signal transmission
- Programmable deadtime control to prevent shoot-through
- Integrated enable functionality for precise switching management
Applications
- Industrial motor drives
- Solar micro-inverters
- Switched-mode power supplies (SMPS)
- Automotive power electronics
Procurement Notes
Verify the specific suffix 'CDWKR' against the manufacturer's official ordering guide to ensure correct packaging and quality grade. Confirm that the automotive qualification status aligns with your system requirements, as variants may differ in reliability standards. Cross-reference the datasheet revision date to ensure compatibility with latest design guidelines.
Selection Notes
Select this component when high-speed switching with strong isolation is required. The 4A/6A drive strength suits medium-power MOSFETs and IGBTs. Ensure the PCB layout accommodates the 14-SOIC footprint and maintains adequate creepage distances for the 5 kVRMS isolation barrier. Consider thermal management for the 950 mW dissipation limit in enclosed environments.
Part Context
This part belongs to the UCC2155x family of optically isolated gate drivers. It shares architectural similarities with the UCC21550 but offers higher isolation voltage ratings. The series is designed for applications requiring galvanic isolation between control logic and power switches, providing noise immunity and safety compliance in high-voltage systems.
Replacement Considerations
The UCC21550ADWKR is a related variant within the same family, though it typically specifies lower isolation voltage ratings. Verify pinout compatibility and electrical parameters before substitution. Other members of the UCC2155x series may offer different isolation levels or drive strengths.
