Texas Instruments (TI) introduces the UCC21520, a 5.7-kVRMS isolated dual-channel gate driver, the first of a new gate-driver family in TI’s isolation portfolio. It is used as an isolated driver in low-side, high-side, high-side/low-side or half-bridge power management designs.
Developed for high-voltage applications where system protection and reliability are critical. It provides surge immunity tested up to 12.8 kV, along with common-mode transient immunity greater than 100 V/ns. It features a propagation delay of 19 ns and a channel-to-channel delay matching of <5 ns.
- The 4-A source and 6-A sink current of the chip reduces switching losses via faster rise times of 6 ns and fall times of 7 ns for a 1.8-nF load, in high-frequency switch-mode power applications.
It offers input voltage from 3 to 18 V, programmable dead-time control, and dual channeling and paralleling of outputs. The device has standby power as low as 1 mA per channel. For more details, see www.ti.com/UCC21520-pr.
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