UCC27424D

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UCC27424D Application Field and Working Principle

UCC27424D is a high-speed, advanced gate driver device, which is classified as a power management integrated circuit (PMIC) gate driver. It is used in applications that require driving high current loads with very fast switching speeds. The UCC27424D is a logic-level gate driver designed for use with a wide range of different types of high current loads, including those powered by high voltage power supplies.

The UCC27424D is designed to operate from a single supply voltage of 4.5V to 35V, with a maximum output current of 1.3A (typical). It has an internal current limiting feature, which protects the device from over-current conditions. The device also incorporates an under-voltage lockout (UVLO) feature to protect the driver from low input supply voltages. Additionally, it includes an over-voltage protection (OVP) circuit which protects the device from over-voltage conditions.

The UCC27424D has an integrated high-side and low-side drive circuit. The two channels are independently controlled with two distinct logic levels, allowing them to be driven by two digital logic signals. The high-side and low-side output stages are controlled by two separate logic inputs. The two logic inputs (IN1 and IN2) are driven to ground or VDD to select the output state. When IN1 is set to ground, the low-side channel is driven "on", while the high-side channel is driven "off". Conversely, when IN1 is set to VDD, the high-side channel is driven "on", while the low-side channel is driven "off". The same logic control is applied to the IN2 control input for controlling the high and low-side channels, respectively.

The rise and fall times for the high-side and low-side channels are adjustable from 900ns to 2.1us with the help of external resistors and a capacitor. The dead time is internally adjustable from 0.7us to 8.0us. This ensures that the high-side and low-side channels will not be enabled simultaneously, thereby preventing the formation of a short circuit between the outputs. Additionally, the UCC27424D incorporates a short-circuit protection (SCP) feature, which protects the device from short circuit conditions.

The UCC27424D has been optimized for use in a wide range of motor control and power management applications. It is well suited for automotive and industrial applications, where fast switching speeds and high current drive capability are required. Additionally, it can be used in renewable energy systems, such as grid-tied or off-grid solar projects, to drive high current solar panel strings. It is also useful for DC-DC converters and PFC (Power Factor Correction) designs. The device is also capable of driving high current LED strings for display and lighting applications.

In summary, the UCC27424D is a high-speed, advanced gate driver device classified as a power management integrated circuit (PMIC) gate driver. It is designed to operate from a single supply voltage of 4.5V to 35V, with a maximum output current of 1.3A (typical). It has an integrated high-side and low-side drive circuit and incorporates a short-circuit protection (SCP) feature to protect the device from short circuit conditions. The rise and fall times and the dead time are adjustable with the help of external components. The UCC27424D is well suited for automotive and industrial applications, where fast switching speeds and high current drive capability are required.

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