Description:Floating Channel for Bootstrap Operation to +1200 V; Typically 2 A/ 3 A Sourcing/Sinking Current Driving Capability for Both Channels; Gate Driver Supply (VCC) Range from 12 V to 20 V; Separate Logic Supply (VDD) Range from 3 V to 20 V; Extended Allowable Negative VS Swing to -9.8 V for Signal Propagation at VCC=VBS=15 V; Built-in Cycle-by-Cycle Edge-Triggered Shutdown Logic; Common-Mode dv/dt Noise Canceling Circuit; UVLO Functions for Both Channels; Built-in Advanced Input Filter; Matched Propagation Dela
A good PCB layout for the FAN73912AMX should include a solid ground plane, wide power traces, and a thermal relief pattern under the device to facilitate heat dissipation. A 2-layer or 4-layer PCB is recommended, with the device mounted on the top layer and the thermal pad connected to a solid ground plane on the bottom layer.
To ensure reliable operation at high temperatures, it's essential to follow proper thermal design and layout guidelines. This includes providing adequate heat sinking, using a thermal interface material (TIM) between the device and heat sink, and ensuring good airflow around the device. Additionally, the device should be operated within its specified temperature range, and the junction temperature should be monitored to prevent overheating.
To ensure EMI and EMC compliance, it's essential to follow proper PCB layout and design guidelines. This includes using a solid ground plane, minimizing loop areas, and using shielding and filtering components as needed. Additionally, the device should be operated within its specified frequency range, and the system should be designed to minimize radiated emissions and susceptibility to external interference.
To troubleshoot issues with the overcurrent protection feature, first verify that the device is properly configured and that the current sense resistors are correctly sized. Check the device's datasheet for specific guidance on setting the current limit threshold. If the issue persists, verify that the device is not overheating and that the power supply is stable. If the problem still cannot be resolved, consult the device's application note or contact onsemi's technical support team for further assistance.
The FAN73912AMX is a high-current, high-voltage device with a unique combination of features, including overcurrent protection, undervoltage lockout, and thermal shutdown. Compared to other similar devices from onsemi, the FAN73912AMX has a higher current rating and a more comprehensive set of protection features. Consult the device's datasheet and application note for a detailed comparison with other onsemi devices.
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FAN73912AMX Overview
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