UCC27201DDARG4

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The UCC27201DDARG4 is designed for high-side driving applications, with some of its features being over-voltage and short circuit protection, sink and sourced current limiting, and configurable oscillator frequency. Its applications span from motor control to solar power conversion, making it a versatile solution for many gate drive needs. In this article, the applications and working principles of the UCC27201DDARG4 are discussed.

Applications

For many non-linear loads such as motors, circuit inductance, resonance and the resulting coupled over-voltages can be an issue. There are several solutions available to combat these issues such as adding application-specific built-in-protective elements to power semiconductors and using drive external modulators to reduce the current change rate in response to a given load. The UCC27201DDARG4 combines these two techniques in one device by featuring both application-specific integrated protective elements, as well as an external current modulator to minimize current spike under high-side load changes. The integrated protection features allow for a speedy response time to safety events, protecting the load with over-voltage and short-circuit limiting, as well as current-peak limiting.

The UCC27201DDARG4 also provides protection from EMI ripple as an additional application-specific integrated element. The half-bridge driver features a multi-state logic input for enabling and disabling bridge transistors and a cycle-by-cycle current limit for flawlessly driving DC motors. In the solar power conversion application, where the highest efficiency is required, the UCC27201DDARG4’s modulated current accuracy through a sophisticated PWM generator is utilized.

Working Principle

The working principle of the UCC27201DDARG4 is based on its multiple integrated protection elements. These elements provide over-voltage and short circuit protection, sink and source current limiting, and configurable oscillator frequency. The over-voltage and short-circuit protection is achieved by means of a self-balancing trigger circuit, which references the input voltage of the UCC27201DDARG4 to the output transistor. When the input voltage exceeds the reference voltage, the self-balancing trigger circuit is activated and the voltage is highly limited by the current limiting feature on the output transistor.

In addition, the device features a current-limited input stage, which ensures that current spikes cannot occur even in highly inductive environments. This current limit is continuously assessed, to avoid over-driving the output and incurring damage.

The UCC27201DDARG4 also features an integrated shut-down logic circuit in order to provide the device with an additional level of protection. This circuit monitors the current limit of the device and shuts down the entire system if the output is over-driven. Furthermore, the high-speed current limit circuit of the UCC27201DDARG4 helps to reduce the inductive kickback and ensure a smooth power transition.

Furthermore, the UCC27201DDARG4 has an inbuilt oscillator circuit which enables an adjustable frequency selection by adjusting an external resistor. This oscillator frequency setting is useful for tuning the internal oscillator to the required system frequency for improved performance.

The UCC27201DDARG4 also features a high-side driver which is monitored by an additional input interrupt pin. The input interrupt pin can be used to enable/disable the high-side driver. The interrupt pin is also useful for implementing additional protective features for the application such as allowing the load to be isolated from the system by disabling the high-side driver.

Overall, the UCC27201DDARG4 is an ideal choice for high-side driving applications. Its integrated protection elements provide the needed protection against voltage and current spikes, while its configurable oscillator ensures accurate and fast frequency setting according to the required application. Its interrupt pin further boosts the system’s protection capabilities by enabling/disabling the high-side drivers when needed. In addition, its current limited input stage ensures smooth and uninterrupted power transitions. It has become highly versatile in its applications, making it a go-to solution for many gate drive needs.

The specific data is subject to PDF, and the above content is for reference