Texas Instruments has introduced a digital power dual synchronous-buck driver with integrated power MOSFETs, protection blocks and monitoring features. The UCD7242 provides designers the flexibility of two independent 10 A rails or one 20 A rail in a small package. The highly accurate on-die current sensing element eliminates the need for calibration or temperature compensation. The device’s input voltage range of 2,2 V to 18 V supports a variety of applications, such as testing and instrumentation, telecommunications, merchant power supplies and motherboards with multiple points of load.
The UCD7242 includes accurate current monitoring outputs (±5%) and a temperature monitoring output. The accurate current limit (±3,3%), thermal shutdown and separate flag per channel protect the power stage system. The device’s dedicated control signal for switching off the low-side MOSFET of each channel makes it highly efficient, even under low load conditions.
TI’s ‘Fusion Digital Power Designer’ graphical user interface allows the designer to enable the UCD7242’s features when paired with a UCD9xxx controller. The free, downloadable tool simplifies the development process by allowing the designer to configure all device parameters in minutes.
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