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.
This 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.
|Part number||Order||Isolation rating (Vrms)||DIN V VDE V 0884-10 transient overvoltage rating (Vpk)||DIN V VDE V 0884-10 working voltage (Vpk)||Number of channels (#)||Power switch||Enable/disable function||Output VCC/VDD (Max) (V)||Output VCC/VDD (Min) (V)||Input VCC (Min) (V)||Input VCC (Max) (V)||Peak output current (A)||Prop delay (ns)||Operating temperature range (C)||Package Group|
|Enable||25||9.2||3||18||6||19||-40 to 125||SOIC | 16|
||5700||8000||2121||2||MOSFET||Enable||25||6.5||3||18||6||19||-40 to 125||SOIC | 16|
|Enable||25||14.7||3||18||6||19||-40 to 125||SOIC | 16|