UCC21521CDW

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UCC21521CDW

DGTL ISO 5.7KV 2CH GT DVR 16SOIC

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Spezifikationen

Part Status Obsolete
Base Product Number UCC21521
Technology Capacitive Coupling
Number of Channels 2
Voltage - Isolation 5700Vrms
Common Mode Transient Immunity (Min) 100V/ns
Propagation Delay tpLH / tpHL (Max) 30ns, 30ns
Pulse Width Distortion (Max) 6ns
Rise / Fall Time (Typ) 6ns, 7ns
Current - Output High, Low 4A, 6A
Voltage - Output Supply 14.7V ~ 25V
Operating Temperature -40°C ~ 125°C
Mounting Type Surface Mount
Package 16-SOIC (0.295", 7.50mm Width)
Supplier Device Package 16-SOIC
Approval Agency CQC, CSA, UR, VDE
Packaging Tube

Übersicht

Description

UCC21521CDW is TI’s isolated dual gate-driver IC designed to drive GaN/SiC MOSFETs in isolated bridge topologies. It provides two independent channels with a common isolated supply, enabling high-side and low-side gate drive in half- or full-bridge configurations.
Key features (typical): compatible logic inputs (3.3/5 V), undervoltage lockout on both channels, deadtime control, fast rise/fall times, fault reporting, and high common-mode transient immunity for rugged high-dv/dt operation. The CDW suffix denotes a specific TI package/pinout variant; check the datasheet for exact package details.
Common applications: isolated switch-mode power supplies, motor drives, solar inverters, and GaN/SiC power converters.
For exact electrical specs (voltage ranges, propagation delays, drive strength) and to evaluate the device, refer to the UCC21521 datasheet and TI’s UCC21521EVM evaluation module.

Features

Here are the typical features of the UCC21521CDW (TI isolated dual gate driver):
- Dual isolated gate-driver channels (high-side and low-side) for half-bridge configurations
- Galvanic isolation between logic and power sides (high common‑mode rejection)
- High peak output current capability to drive fast switching Si, SiC, and GaN FETs
- Independent undervoltage lockout (UVLO) and enable for each channel
- Built‑in deadtime/blanking control to prevent shoot‑through
- Fault/status reporting with fault pin or flag outputs
- Overcurrent and overtemperature protection
- Robust CMIR/CMIT performance for noisy/high‑dv environments
- Logic‑level input compatible with common 3.3 V and 5 V controllers
- Suitable for automotive/industrial environments and isolated bridge applications
- Small packaging (CDW variant) for compact designs
Note: Always verify exact numbers (isolation voltage, UVLO thresholds, propagation delay, and drive strength) from the latest TI datasheet for your specific revision.

Package

UCC21521CDW is in a VSON-8 package (8-pin, roughly 3x3 mm) with an exposed pad (lead-free).

Pinout

- Pin count: 8 pins (CDW typically indicates a WSON-8 package).
- Function: UCC21521CDW is an isolated gate-driver IC used to drive a single IGBT/MOSFET gate, providing galvanic isolation between the logic input and the power-side gate signal (gate drive voltage/current for switching).

Manufacturer

- Manufacturer: Texas Instruments (TI).
- What kind of company: An American multinational semiconductor company that designs and manufactures analog and mixed-signal integrated circuits and related electronics components.

Application

Dual-channel isolated gate driver for high-voltage MOSFETs/IGBTs. Applications: motor drives (BLDC/PMSM), DC–DC and AC–DC power supplies, solar/wind inverters, UPS and industrial power converters, renewable energy systems, telecom/server power, and automotive HV systems.

Equivalent

Direct drop-in equivalents don’t exist. Closest are TI’s other parts in the UCC2152x family: UCC21520, UCC21522, UCC21523, UCC21524. Non‑TI options with similar gate‑drive performance include Broadcom/Avago HCPL-3150/3151 and Analog Devices ADuM3150/3151. Always verify isolation voltage, dv/dt rating, propagation delay, and output current for your design, and use TI’s cross‑reference tool to find exact substitutes.

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