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The UCC21521 is an isolated dual-channel gate driver with 4-A source and 6-A sink peak current. It is designed to drive power MOSFETs, IGBTs, and SiC MOSFETs up to 5-MHz with best-in-class propagation delay and pulse-width distortion.
Key Features
Universal: dual low-side, dual high-side or half-bridge driver
Operating temperature range: –40 to +125°C
Switching parameters: 19-ns typical propagation delay, 10-ns minimum pulse width, 5-ns maximum delay matching, 6-ns maximum pulse-width distortion
Common-mode transient immunity (CMTI) greater than 100 V/ns
Surge immunity up to 12.8 kV
Isolation barrier life >40 years
4-A peak source, 6-A peak sink output
TTL and CMOS compatible inputs
3-V to 18-V input VCCI range to interface with both digital and analog controllers
Up to 25-V VDD output drive supply with 5-V, 8-V, 12-V VDD UVLO options
Programmable overlap and dead time
Rejects input pulses and noise transients shorter than 5 ns
Fast enable for power sequencing
Wide body SOIC-16 (DW) package
Safety-related certifications: 8000-VPK reinforced isolation per DIN V VDE V0884-11:2017-01, 5700-VRMS Isolation for 1 minute per UL 1577, CSA certification per IEC standards, CQC certification per GB4943.1-2011
Applications
Isolated converters in offline AC-to-DC power supplies
Server, telecom, IT, and industrial infrastructures
Motor drive and DC-to-AC solar inverters
LED lighting
Inductive heating
Uninterruptible power supply (UPS)
Detailed Description
The input side is isolated from the two output drivers by a 5.7-kVRMS reinforced isolation barrier, with a minimum of 100-V/ns common-mode transient immunity (CMTI). Internal functional isolation between the two secondary-side drivers allows a working voltage of up to 1500 VDC.
Every driver can be configured as two low-side drivers, two high-side drivers, or a half-bridge driver with programmable dead time (DT). The EN pin pulled low shuts down both outputs simultaneously and allows for normal operation when left open or pulled high. As a fail-safe measure, primary-side logic failures force both outputs low.
The device accepts VDD supply voltages up to 25 V. A wide input VCCI range from 3 V to 18 V makes the driver suitable for interfacing with both analog and digital controllers. All the supply voltage pins have under voltage lock-out (UVLO) protection.
With all these advanced features, the UCC21521 enables high efficiency, high power density, and robustness in a wide variety of power applications.
Device Information
Part Number
Package
Body Size (Nom)
UCC21521ADW
DW SOIC (16)
10.30 mm * 7.50 mm
UCC21521DW
DW SOIC (16)
10.30 mm * 7.50 mm
UCC21521CDW
DW SOIC (16)
10.30 mm * 7.50 mm
Product Images
Packaging & Shipping
Standard export packaging available. Customers can choose from cartons, wooden cases, and wooden pallets according to their requirements.
Frequently Asked Questions
How to obtain the price?
We typically provide quotations within 24 hours of receiving your inquiry (excluding weekends and holidays). For urgent pricing requests, please contact us directly.
What is your delivery time?
Small batches typically ship within 7-15 days, while large batch orders may require approximately 30 days depending on order quantity and season.
What are your payment terms?
Factory pricing with 30% deposit and 70% balance payment via T/T before shipment.
What are the shipping options?
Available shipping methods include sea freight, air freight, and express delivery (EMS, UPS, DHL, TNT, FEDEX). Please confirm your preferred method before ordering.
