High-speed, high-voltage isolated gate driver
The first of a gate-driver family added to TI’s isolation portfolio, the UCC21520’s flexible, universal compatibility enables its use as an isolated driver in low-side, high-side, high-side/low-side or half-bridge power management designs. With its integrated components, advanced protection features and optimized switching performance, the UCC21520 enables designers to build smaller, more robust designs.
Developed for high-voltage applications where system protection and reliability are critical, the UCC21520 provides reinforced isolation of 5.7 kVRMS and surge immunity tested up to 12.8 kV, along with common-mode transient immunity greater than 100 V/nsec. With propagation delay of 19 nsec and channel-to-channel delay matching of less than 5 nsec, the device enables high power density and efficiency.
Other features include;
– 4-A source and 6-A sink current reduce switching losses via faster rise times of 6 nsec and fall times of 7 nsec for a 1.8-nF load in high-frequency switch-mode power applications.
– With a wide input voltage of 3 to 18V, programmable dead-time control, and dual channelling and paralleling of outputs, the UCC21520 gives designers a single, flexible device for multiple applications.
– Standby power down to 1 mA per channel.
Support includes the UCC21520EVM-286 evaluation module and PSpice/SIMPLIS transient models. Review the block diagram, design files and bill of materials for the TI Designs Reference Design for Reinforced Isolation 3-Phase Inverter with Current, Voltage and Temp Protection (TIDA-00366).
In a 16-pin plastic small outline (SOIC16) wide-body package the part is priced at $2.40 (1,000).
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