UCC5320ECDR

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The UCC5320ECDR provides a robust solution for both isolated gate drive and isolated RS-485 data communications. Its advanced active clamping technology, and small size allows for maximum design flexibility in both single- and multi-channel applications. This unique device combines isolation, Gate Drive Circuits, and a data rate of up to 25mbps.

In terms of application fields, this device provides electrical noise isolation for data bus communication in harsh environment applications, and is also commonly used in motor controls,AVR power conversion, solar inverter and home automation.

As a member of the Isolators - Gate Drivers category, the UCC5320ECDR uses active clamp and transformer coupling isolation to provide a true galvanic isolated output. Acting as an augmentative semiconductor switch, the active clamp topology offers significant reduction of losses compared with conventional solutions. Moreover, the high common-mode transient immunity provides superior data integrity and reliability during operation.

In order to properly understand the working principle of the UCC5320ECDR, the common block diagram needs to be explained in detail first. At the core of the device there lies a power management unit (PMU), which manages the over-current, over-voltage and thermal protections of the system. The PMU is coupled with a control circuitry and a driver circuit, the combination of which allows for a wide range of regulated control of the output device. Furthermore, isolated voltage regulator control modules provide an intelligent interface between the PMU and the output stage to ensure high-level of precision and accuracy.

Apart from its power management capabilities, the UCC5320ECDR is also capable of controlling the data input through a user-selectable digital input connector with a choice of either SPI or I2C protocol for data rate control. This digital input connector provides a means for isolating the external data signal from the internal system, thus eliminating the common side effects associated with unbalanced impedance.

Finally, the UCC5320ECDR contains built-in desaturation protection and programmable blanking time to provide a robust shield against ground fault events.

The UCC5320ECDR solution is a robust platform with a highly flexible design, providing an impressive data rate of up to 25mbps for isolated gate drive and RS485 data communication in harsh environment applications. Its advanced active clamping technology, and small size allow for maximum design flexibility in both single- and multi-channel applications. Moreover, its high common-mode transient immunity provides superior data integrity and reliability during operation as well as built-in desaturation protection and programmable blanking time to provide a robust shield against ground fault events.

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