UCC28220DR

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The UCC28220DR is a dual high-speed MOSFET gate driver for isolated DC/DC converters and off-line systems. With its pair of high-speed floating MOSFET drivers, this IC provides the necessary timing signals and voltage level controls to drive two isolated MOSFET switches. It is designed to produce accurate and well-timed signals to minimize losses due to unnecessary waiting time and minimize EMI by allowing the MOSFETs to turn off or remain off while the transformer transitions through its high-frequency ringing region.

The UCC28220DR is based on an advanced power MOSFET drive architecture and can accommodate a wide range of input voltages from 3.05V to 11.6V. It is ideal for producing power efficiency and good EMI performance in offline high-frequency, fast-transition applications such as laptop power supplies, DC/DC converters and boost applications.

The UCC28220DR is designed to work efficiently with a minimum of external components, which reduces overall system cost. The featured low-side protection circuitry helps protect the MOSFET during high-temperature operation and prevents false-triggering due to parasitic turn-ups. The device offers precise voltage and current control capabilities, allowing precise regulation and improved system control.

The device offers excellent power efficiency through its low quiescent current, low duty cycle current and precise current limiter capability. The current limit scheme eliminates the need for a dedicated current sense resistor and eliminates any unnecessary power dissipation due to current limit. The glitch-free startup feature guarantees that the MOSFET is always in the off-state until the IC is more than one-third of the way to its intended state.

The low-side power MOSFET gate drive circuitry includes an adjustable turn-off speed control circuit to allow for improved efficiency and better EMI compared to traditional gate drive topologies, resulting in reduced power dissipation, improved switching speed and superior transient response. The IC also offers a self-clocking input circuitry, allowing the circuit to adapt to different clock frequencies and line synchronization, providing improved switching efficiency and transient response over a wide range of operating conditions.

The UCC28220DR also provides an output slew rate controlled low-side gate drive, allowing the topology to be designed with very low levels of power electronics noise. The MOSFET gate drive also includes an adjustable peak current level control, allowing very low levels of power dissipation across the MOSFET and a wide operating temperature range.

Overall, the UCC28220DR is an ideal choice for power designers looking for a highly efficient and reliable power supply solution for offline systems. The integrated features of the device allow for simple and cost-effective implementations that offer the best combination of performance, efficiency and reliability. The features, combined with its small size, make it an ideal choice for applications with space constraints.

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