Packaging information
| Package | Pins SOIC (DW) | 16 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 2,000 | LARGE T&R |
Features for the UCC21521
- 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
- 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 V 0884-11:2017-01
- 5700-VRMS Isolation for 1 minute per UL 1577
- CSA certification per IEC 60950-1, IEC 62368-1, IEC 61010-1 and IEC 60601-1 end equipment standards
- CQC certification per GB4943.1-2011
Description for the UCC21521
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.
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.