Description:4.5-A Peak Source, 9-A Peak Sink Output Current Capability; Output Supply Voltage from 6.5 V to 30 V with 5-V, 8-V, and 17-V UVLO threshold.; Propagation Delay Typical 36 ns with 8 ns Max Delay Matching per channel; User Programmable Input Logic for Single or Dual-input modes via ANB; Common Mode Transient Immunity CMTI > 200 V/ns; 5 kVrms Galvanic Isolation from input to each output & 1200 V peak differential voltage between output channels; User Programmable Dead-Time; Enable or Disable pin
A good thermal design should include a solid ground plane, thermal vias under the IC, and a heat sink if possible. The datasheet provides some guidelines, but a more detailed application note is available from onsemi.
To ensure reliable start-up and shutdown, make sure to follow the recommended power-up and power-down sequences, and add a soft-start circuit to limit inrush current. Also, ensure that the input voltage is stable and within the recommended range.
To minimize EMI, use a pi-filter or a common-mode choke at the input, and add a ferrite bead or a capacitor at the output. Also, ensure that the PCB layout is optimized for noise reduction, with minimal loop areas and proper grounding.
Choose an output capacitor with a suitable capacitance value, voltage rating, and ESR (Equivalent Series Resistance) based on the output voltage, current, and ripple requirements. The datasheet provides some guidelines, but consult the capacitor manufacturer's datasheet for specific recommendations.
The NCP51561BADWR2G has an internal thermal monitoring circuit that shuts down the device if the junction temperature exceeds 150°C. It also has an over-temperature protection feature that limits the output current to prevent overheating.
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NCP51561BADWR2G Overview
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