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The UCC21520 is TI's recently announced new enhanced isolated driver, TI's first isolated dual-channel gate driver. The isolated driver is suitable for high-end, low-end and half-bridge power management designs for automotive, motor drive, enterprise energy and communications, and solar inverters.

UCC21520's performance is also considerable for isolated dual-channel drivers developed for high-voltage applications where system protection and reliability are critical . The source current of 4A and the reverse current of 6A make it suitable for high-frequency switching power supply with a load of 1.8nF large capacitor. The rise time is only 6ns, and the fall time is 7ns, which greatly improves the switching speed and reduces the switching speed. The loss of the switch, which increases the power density, makes the designer solution smaller in size. "In isolation, we can achieve the industry's top 12.8kV surge protection and anti-noise performance above 100V / ns. There is a lot of interference around the power supply, if there is an interference just between the input and output isolation layers, and you The anti-interference ability is poor, it will affect the transmission of your penetration, or affect the application of the switch. And our UCC21520 performance allows customers to operate under very high interference, but also TI is a very important breakthrough. "Wu Wei strong TI analog products automotive solutions business Development Director Asia Pacific, introduced the" UCC21520 supports a very wide voltage input, for example, at the input supply voltage low side of 3V ~ 18V, so there are With great flexibility and flexibility, he can directly convert from the low-voltage output of the DSP to a TTL or CMOS input, which eliminates the need for additional systems between the master and the driver, simplifying the designer's design. "Low power consumption is also A feature of the device is that its standby power can be as low as 1 mA, which increases energy efficiency and extends the life of the device.

As a dual-channel gate driver, the UCC21520's internal channels are highly matched and support parallel designs. If there are two low-end or two high-end drivers, the two sets of drivers can be connected in parallel, which can increase the source current to 8A and the reverse current to 12A, which improves the driving ability of the solution. In addition, the isolation of the driver is capacitive isolation, and the isolation part has a lifetime of more than 40 years, which greatly improves the reliability of the solution. "UCC21520 is highly integrated and can help customers improve the efficiency density of their solutions, making their solutions smaller, increasing reliability, and meeting the world's most stringent SVDV-enhanced surge protection voltage of 12.8kV. At the same time, it also passed the UL1577 5.7kV enhanced isolation function in the United States. "Director Wu Yiqiang said.